SettingsNautical terms
Aft
Aft, in naval terminology, is an adjective or adverb meaning, towards the stern (rear) of the ship, when the frame of reference is within the ship.
Aft, in naval terminology, is an adjective or adverb meaning, towards the stern (rear) of the ship, when the frame of reference is within the ship.
Aftcastle
An aftcastle is the upper deck of a sailing ship positioned behind the Mizzenmast.
An aftcastle is the upper deck of a sailing ship positioned behind the Mizzenmast.
Aftercastle
Aftercastle is the stern structure behind the mizzenmast and above the transom on large sailing ships, such as carracks, caravels, galleons and galleasses.
Aftercastle is the stern structure behind the mizzenmast and above the transom on large sailing ships, such as carracks, caravels, galleons and galleasses.
Ahoy (greeting)
Ahoy is a word used to signal a ship or boat, stemming from the Middle English cry, "Hoy!".
Ahoy is a word used to signal a ship or boat, stemming from the Middle English cry, "Hoy!".
Air draft
Air draught (or draft) is the distance from the surface of the water to the highest point on a vessel, similar to the "deep draught" of a vessel which is measured from the surface of the water t...
Air draught (or draft) is the distance from the surface of the water to the highest point on a vessel, similar to the "deep draught" of a vessel which is measured from the surface of the water t...
Anchor
An anchor is a device, normally made of metal, that is used to connect a vessel to the bed of a body of water to prevent the vessel from drifting due to wind or current.
An anchor is a device, normally made of metal, that is used to connect a vessel to the bed of a body of water to prevent the vessel from drifting due to wind or current.
Anchor windlass
An anchor windlass is a machine that restrains and manipulates the anchor chain and/or rope on a boat, allowing the anchor to be raised and lowered.
An anchor windlass is a machine that restrains and manipulates the anchor chain and/or rope on a boat, allowing the anchor to be raised and lowered.
Backstay
On a sailing vessel, a backstay is the piece of standing rigging that runs from the mast to the transom of the boat, counteracting the forestay and jib.
On a sailing vessel, a backstay is the piece of standing rigging that runs from the mast to the transom of the boat, counteracting the forestay and jib.
Baggywrinkle
Baggywrinkle is a soft covering for cables (or any other obstructions) to reduce sail chafe.
Baggywrinkle is a soft covering for cables (or any other obstructions) to reduce sail chafe.
Banana boat (boat)
A banana boat, also known as a water sled and often referred to simply as a banana, is an inflatable recreational boat meant for towing.
A banana boat, also known as a water sled and often referred to simply as a banana, is an inflatable recreational boat meant for towing.
Banana boat (ship)
A banana boat is a ship that carries bananas as a primary cargo, or is otherwise engaged in the banana trade.
A banana boat is a ship that carries bananas as a primary cargo, or is otherwise engaged in the banana trade.
Bank effect
Bank effect refers to the tendency of the stern of a ship to swing toward the near bank when operating in a river or constricted waterway.
Bank effect refers to the tendency of the stern of a ship to swing toward the near bank when operating in a river or constricted waterway.
Barber's pole
A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft.
A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft.
Beached (naval)
A naval officer who is beached is one who, through illness or other incapacitation, is restricted to shore duty.
A naval officer who is beached is one who, through illness or other incapacitation, is restricted to shore duty.
Beaching (nautical)
Beaching is when a vessel is laid ashore, or grounded deliberately in shallow water.
Beaching is when a vessel is laid ashore, or grounded deliberately in shallow water.
Beitass
A beitass, or stretching pole, is a wooden spar used on Viking ships that was fitted into a pocket at the lower corner of the sail.
A beitass, or stretching pole, is a wooden spar used on Viking ships that was fitted into a pocket at the lower corner of the sail.
Berth (moorings)
A berth is a location in a port or harbour used specifically for mooring vessels while not at sea.
A berth is a location in a port or harbour used specifically for mooring vessels while not at sea.
Berth (sleeping)
The word berth was originally used to describe beds and sleeping accommodation on boats and ships and has now been extended to refer to similar facilities on trains, aircraft, buses and trucks.
The word berth was originally used to describe beds and sleeping accommodation on boats and ships and has now been extended to refer to similar facilities on trains, aircraft, buses and trucks.
Bilge keel
A bilge keel is often in a "V" shape, welded along the length of the ship at the turn of the bilge.
A bilge keel is often in a "V" shape, welded along the length of the ship at the turn of the bilge.
Boat trailer
A boat trailer is a trailer designed to launch, retrieve, carry and sometimes store boats.
A boat trailer is a trailer designed to launch, retrieve, carry and sometimes store boats.
Boatswain
A boatswain, bo's'n, bos'n, or bosun is an unlicensed member of the deck department of a merchant ship.
A boatswain, bo's'n, bos'n, or bosun is an unlicensed member of the deck department of a merchant ship.
Bollard pull
Bollard pull is a value that allows the comparison of the pulling force of watercraft, particularly tugboats.
Bollard pull is a value that allows the comparison of the pulling force of watercraft, particularly tugboats.
Boom (sailing)
In sailing, a boom is a spar, along the foot of a fore and aft rigged sail, that greatly improves control of the angle and shape of the sail.
In sailing, a boom is a spar, along the foot of a fore and aft rigged sail, that greatly improves control of the angle and shape of the sail.
Boom vang
A boom vang (US) or kicking strap (UK) is a line or piston system on a sailboat used to exert downward force on the boom and thus control the shape of the sail.
A boom vang (US) or kicking strap (UK) is a line or piston system on a sailboat used to exert downward force on the boom and thus control the shape of the sail.
Boomkin
A boomkin, sometimes referred to as a bumkin or as a bumpkin, consists of an exceptionally strong and usually wooden spar that projects downwards and forwards over the main head rail...
A boomkin, sometimes referred to as a bumkin or as a bumpkin, consists of an exceptionally strong and usually wooden spar that projects downwards and forwards over the main head rail...
Bow (ship)
The bow (, rhymes with how) is a nautical term that refers to the forward part of the hull of a ship or boat, the point that is most forward when the vessel is underway.
The bow (, rhymes with how) is a nautical term that refers to the forward part of the hull of a ship or boat, the point that is most forward when the vessel is underway.
Bow Rider
A bow rider is a kind of runabout boat typically between 17' and 30', use stern drive or outboard engines, and hold between six and ten people.
A bow rider is a kind of runabout boat typically between 17' and 30', use stern drive or outboard engines, and hold between six and ten people.
Bow rider
A bow rider is a kind of runabout boat typically between 17' and 30', use stern drive or outboard engines, and hold between six and ten people.
A bow rider is a kind of runabout boat typically between 17' and 30', use stern drive or outboard engines, and hold between six and ten people.
Boy Seaman
A boy seaman is a boy who serves as seaman and/or is trained for such service.
A boy seaman is a boy who serves as seaman and/or is trained for such service.
Braces (sailing)
The braces on a square-rigged ship are lines used to rotate the yards around the mast, to allow the ship to sail at different angles to the wind.
The braces on a square-rigged ship are lines used to rotate the yards around the mast, to allow the ship to sail at different angles to the wind.
Brail
Brails, in a sailing ship, are small lines passing through blocks, and used to haul in or up the leeches, bottoms, or corners of sails, before furling.
Brails, in a sailing ship, are small lines passing through blocks, and used to haul in or up the leeches, bottoms, or corners of sails, before furling.
Brightwork
On boats, particularly wooden boats, brightwork is exposed metal and varnished woodworking.
On boats, particularly wooden boats, brightwork is exposed metal and varnished woodworking.
Builder's Old Measurement
Builder's Old Measurement (BOM or bm) is the method of calculating the size or cargo capacity of a ship used in England from approximately 1650 to 1849.
Builder's Old Measurement (BOM or bm) is the method of calculating the size or cargo capacity of a ship used in England from approximately 1650 to 1849.
Bulb keel
A bulb keel is a keel, usually made with a high aspect ratio foil, that contains a ballast-filled bulb at the bottom, usually teardrop shaped.
A bulb keel is a keel, usually made with a high aspect ratio foil, that contains a ballast-filled bulb at the bottom, usually teardrop shaped.
Bulkhead (partition)
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an airplane.
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an airplane.
Bumpkin
A bumpkin is a spar extending beyond the stern of a sailing vessel to provide an attachment point for a backstay or the sheet of a mizzen.
A bumpkin is a spar extending beyond the stern of a sailing vessel to provide an attachment point for a backstay or the sheet of a mizzen.
Cable length
A cable length or cable's length is a nautical unit of measure equal to one tenth of a nautical mile or 100 fathoms, or sometimes 120 fathoms.
A cable length or cable's length is a nautical unit of measure equal to one tenth of a nautical mile or 100 fathoms, or sometimes 120 fathoms.
Caboose (ship's galley)
Caboose (also camboose, coboose, cubboos derived from the Dutch kambuis) is a term used for a small ship's kitchen, or galley on deck.
Caboose (also camboose, coboose, cubboos derived from the Dutch kambuis) is a term used for a small ship's kitchen, or galley on deck.
Capsize screening formula
The capsize screening formula (CSF) is a somewhat controversial figure.
The capsize screening formula (CSF) is a somewhat controversial figure.
Capstan (nautical)
A capstan is a vertical-axled rotating machine developed for use on sailing ships to apply force to ropes, cables, and hawsers.
A capstan is a vertical-axled rotating machine developed for use on sailing ships to apply force to ropes, cables, and hawsers.
Captain (nautical)
The captain (alt. master or shipmaster) of a merchant vessel is a licensed mariner in ultimate command of the vessel.
The captain (alt. master or shipmaster) of a merchant vessel is a licensed mariner in ultimate command of the vessel.
Captain of the Port
The Captain of the Port is an official who has different functions in the United Kingdom and the United States.
The Captain of the Port is an official who has different functions in the United Kingdom and the United States.
Careening
Careening a sailing vessel is the practice of beaching it at high tide.
Careening a sailing vessel is the practice of beaching it at high tide.
Catamaran
A catamaran is a type of multihulled boat or ship consisting of two hulls, or vakas, joined by some structure, the most basic being a frame, formed of akas.
A catamaran is a type of multihulled boat or ship consisting of two hulls, or vakas, joined by some structure, the most basic being a frame, formed of akas.
Catboat
A catboat, or a cat-rigged sailboat, is a sailing vessel characterized by a single mast carried well forward.
A catboat, or a cat-rigged sailboat, is a sailing vessel characterized by a single mast carried well forward.
Cathead
A cathead is a large wooden beam located on either bow of a sailing ship, and angled outward at roughly 45 degrees.
A cathead is a large wooden beam located on either bow of a sailing ship, and angled outward at roughly 45 degrees.
CBDR
Acronym for Constant Bearing, Decreasing Range.
Acronym for Constant Bearing, Decreasing Range.
Center console (boat)
Center console (British English: centre console) is a type of single-decked open hull boat where the console of the boat is in the center of the boat.
Center console (British English: centre console) is a type of single-decked open hull boat where the console of the boat is in the center of the boat.
Centreboard
A centreboard or centerboard is a retractable keel which pivots out of a slot in the hull of a sailboat, known as a centreboard trunk or centerboard case.
A centreboard or centerboard is a retractable keel which pivots out of a slot in the hull of a sailboat, known as a centreboard trunk or centerboard case.
Chafing
Chafing when used as a nautical term describes the process of wear on a line or sail caused by constant rubbing against a hard, usually metallic, surface.
Chafing when used as a nautical term describes the process of wear on a line or sail caused by constant rubbing against a hard, usually metallic, surface.
Chafing (nautical)
Chafing when used as a nautical term describes the process of wear on a line or sail caused by constant rubbing against a hard, usually metallic, surface.
Chafing when used as a nautical term describes the process of wear on a line or sail caused by constant rubbing against a hard, usually metallic, surface.
Chainplate
A chainplate is a metal plate used to fasten a shroud or stay to the hull of a sailboat.
A chainplate is a metal plate used to fasten a shroud or stay to the hull of a sailboat.
Chains (nautical)
The chains were small platforms, built on either side of the hull of a ship, used to assist in the practice of depth sounding.
The chains were small platforms, built on either side of the hull of a ship, used to assist in the practice of depth sounding.
Channel (geography)
In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.
In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.
Charlie Noble
Charlie Noble is the smoke stack on a ship's galley.
Charlie Noble is the smoke stack on a ship's galley.
Chief engineer
In marine transportation, the chief engineer is a licensed mariner in charge of the engineering department on a merchant vessel.
In marine transportation, the chief engineer is a licensed mariner in charge of the engineering department on a merchant vessel.
Chief mate
A Chief Mate or Chief Officer, usually also synonymous with the First Mate or First Officer, is a licensed member and head of the deck department of a merchant ship.
A Chief Mate or Chief Officer, usually also synonymous with the First Mate or First Officer, is a licensed member and head of the deck department of a merchant ship.
Chine (boating)
A chine in boating refers to a sharp angle in the hull, as compared to the rounded bottoms of most traditional boat hulls.
A chine in boating refers to a sharp angle in the hull, as compared to the rounded bottoms of most traditional boat hulls.
Clean sweep (naval)
A "clean sweep" for a naval vessel refers to having "swept the enemy from the seas," a completely successful mission.
A "clean sweep" for a naval vessel refers to having "swept the enemy from the seas," a completely successful mission.
Coaming
Coaming is any vertical surface on a ship designed to deflect or prevent entry of water.
Coaming is any vertical surface on a ship designed to deflect or prevent entry of water.
Cold Ironing
Shorepower (also known as cold ironing, shore power or shore supply, especially in the UK) is a power source from land used to power marine vessels when in a harbor.
Shorepower (also known as cold ironing, shore power or shore supply, especially in the UK) is a power source from land used to power marine vessels when in a harbor.
Commercial vessel
A commercial vessel is defined by the United States Coast Guard as any vessel (i.e.
A commercial vessel is defined by the United States Coast Guard as any vessel (i.e.
Companionway
In the architecture of a ship, a companion or companionway is a raised and windowed hatchway in the ship's deck, with a ladder leading below and the hooded entrance-hatch to the main cabins.
In the architecture of a ship, a companion or companionway is a raised and windowed hatchway in the ship's deck, with a ladder leading below and the hooded entrance-hatch to the main cabins.
Consort (nautical)
Consort is a nautical term for unpowered Great Lakes vessels, usually a fully loaded schooner barge or steamer barge, towed by a larger steamer that would often tow more than one barge.
Consort is a nautical term for unpowered Great Lakes vessels, usually a fully loaded schooner barge or steamer barge, towed by a larger steamer that would often tow more than one barge.
Constant bearing, decreasing range
Constant bearing, decreasing range means that some object, usually another ship viewed from the deck or bridge of one's own ship, is getting closer but maintaining the same true bearing.
Constant bearing, decreasing range means that some object, usually another ship viewed from the deck or bridge of one's own ship, is getting closer but maintaining the same true bearing.
Constanzi stern
A Constanzi stern is a type of stern designed for use on ocean-going vessels.
A Constanzi stern is a type of stern designed for use on ocean-going vessels.
Coxcombing
Coxcombing is a decorative knotwork performed by sailors.
Coxcombing is a decorative knotwork performed by sailors.
Cruise director
A cruise director is a high ranking officer of a cruise ship, usually reporting to the Executive Purser.
A cruise director is a high ranking officer of a cruise ship, usually reporting to the Executive Purser.
Cuddy (cabin)
A cuddy is a small cabin in a boat.
A cuddy is a small cabin in a boat.
Cunningham (sailing)
In sailing, a cunningham or cunningham's eye is a type of downhaul used on a Bermuda rigged sailboat to change the shape of a sail.
In sailing, a cunningham or cunningham's eye is a type of downhaul used on a Bermuda rigged sailboat to change the shape of a sail.
Damage control
Damage control is a term used in the Merchant Marine, maritime industry and navies for the emergency control of situations that may hazard the sinking of a ship.
Damage control is a term used in the Merchant Marine, maritime industry and navies for the emergency control of situations that may hazard the sinking of a ship.
Day's run
A Day's run is the distance traveled by a vessel in one day, usually reckoned from noon to noon.
A Day's run is the distance traveled by a vessel in one day, usually reckoned from noon to noon.
Daymark
A daymark or a day marker is a structure such as a tower constructed on land as an aid to navigation by sailors.
A daymark or a day marker is a structure such as a tower constructed on land as an aid to navigation by sailors.
Dead water
Dead water is the nautical term for a strange phenomenon which can occur when a layer of fresh or brackish water rests on top of denser salt water, without the two layers mixing.
Dead water is the nautical term for a strange phenomenon which can occur when a layer of fresh or brackish water rests on top of denser salt water, without the two layers mixing.
Deadweight tonnage
Deadweight tonnage (also known as deadweight and "payload", abbreviated to DWT, D.W.T., d.w.t.
Deadweight tonnage (also known as deadweight and "payload", abbreviated to DWT, D.W.T., d.w.t.
Deadwood (shipbuilding)
Deadwood is a lower inside part of ship stem made from timber.
Deadwood is a lower inside part of ship stem made from timber.
Deckhead
A deckhead is the underside of a deck in a ship.
A deckhead is the underside of a deck in a ship.
Displacement (ship)
A ship's displacement or displacement tonnage is the weight of the water that a ship displaces when it is floating with its fuel tanks full and all stores aboard.
A ship's displacement or displacement tonnage is the weight of the water that a ship displaces when it is floating with its fuel tanks full and all stores aboard.
Displacement-Length Ratio
The displacement–length ratio (DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length.
The displacement–length ratio (DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length.
Dock (maritime)
A dock (from Dutch dok) is a human-made structure or group of structures involved in the handling of boats or ships, usually on or close to a shore.
A dock (from Dutch dok) is a human-made structure or group of structures involved in the handling of boats or ships, usually on or close to a shore.
Dog watch
Dog watch, in marine or naval terminology, is a watch, a period of work duty or a work shift, between 1600 and 2000.
Dog watch, in marine or naval terminology, is a watch, a period of work duty or a work shift, between 1600 and 2000.
Doldrums
The Intertropical Convergence Zone (ITCZ) is the area encircling the earth near the equator where winds originating in the northern and southern hemispheres come together.
The Intertropical Convergence Zone (ITCZ) is the area encircling the earth near the equator where winds originating in the northern and southern hemispheres come together.
Dolphin (structure)
A dolphin is a man-made marine structure that extends above the water level and is not connected to shore.
A dolphin is a man-made marine structure that extends above the water level and is not connected to shore.
Dorade box
A dorade box is a type of vent that permits the passage of air in and out of the cabin of a boat, while keeping rain, spray or sea wash out.
A dorade box is a type of vent that permits the passage of air in and out of the cabin of a boat, while keeping rain, spray or sea wash out.
Downbound
Downbound - A direction a vessel is moving in the Great Lakes region.
Downbound - A direction a vessel is moving in the Great Lakes region.
Downhaul
The downhaul is a line which is part of the rigging on a sailboat; it applies downward force on a spar or sail.
The downhaul is a line which is part of the rigging on a sailboat; it applies downward force on a spar or sail.
Draft (hull)
The draft (or draught) of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel), with the thickness of the hull included; in the case of not being ...
The draft (or draught) of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel), with the thickness of the hull included; in the case of not being ...
Draft (sail)
In nautical parlance, the draft or draught of a sail is a degree of curvature in a horizontal cross-section.
In nautical parlance, the draft or draught of a sail is a degree of curvature in a horizontal cross-section.
Dredging
Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow seas or fresh water areas with the purpose of gathering up bottom sediments and disposi...
Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow seas or fresh water areas with the purpose of gathering up bottom sediments and disposi...
Dutch linguistic influence on naval terms
Historically, many Dutch military terms have been influential and adopted as loanwords by many other languages all over the world.
Historically, many Dutch military terms have been influential and adopted as loanwords by many other languages all over the world.
Earing
In sailing, an earing is a small line (rope) used to fasten the corner of a sail to a spar or yard.
In sailing, an earing is a small line (rope) used to fasten the corner of a sail to a spar or yard.
Ellicott Dredges
First established as the Ellicott Machine Company in 1885, Ellicott Dredges is one of the oldest manufactures in the world that specializes in the design and building of dredges and dredge machinery.
First established as the Ellicott Machine Company in 1885, Ellicott Dredges is one of the oldest manufactures in the world that specializes in the design and building of dredges and dredge machinery.
Fathom
A fathom = 1.8288 meters, is a unit of length in the imperial and the U.S. customary systems, used especially for measuring the depth of water.
A fathom = 1.8288 meters, is a unit of length in the imperial and the U.S. customary systems, used especially for measuring the depth of water.
Fender (boating)
In boating, a fender is a bumper used to absorb the kinetic energy of a berthing boat or vessel against a jetty, quay wall or other vessel.
In boating, a fender is a bumper used to absorb the kinetic energy of a berthing boat or vessel against a jetty, quay wall or other vessel.
Fife rail
A fife rail is a design element of the bulwarks of an European-style sailing ship used to belay the ship's halyards at the base of a mast.
A fife rail is a design element of the bulwarks of an European-style sailing ship used to belay the ship's halyards at the base of a mast.
Fin
A fin is a surface used for stability and/or to produce lift and thrust or to steer while traveling in water, air, or other fluid media,.
A fin is a surface used for stability and/or to produce lift and thrust or to steer while traveling in water, air, or other fluid media,.
First assistant engineer
A first assistant engineer (also called the second engineer in some countries) is a licensed member of the engineering department on a merchant vessel.
A first assistant engineer (also called the second engineer in some countries) is a licensed member of the engineering department on a merchant vessel.
Fishing dredge
A fishing dredge, also known as a scallop dredge, oyster dredge, etc, is a kind of dredge which is towed along the bottom of the sea by a fishing boat in order to collect a targeted ...
A fishing dredge, also known as a scallop dredge, oyster dredge, etc, is a kind of dredge which is towed along the bottom of the sea by a fishing boat in order to collect a targeted ...
Fishing gaff
In fishing, a gaff is a pole with a sharp hook on the end that is used to stab a large fish and then lift the fish into the boat.
In fishing, a gaff is a pole with a sharp hook on the end that is used to stab a large fish and then lift the fish into the boat.
Flag state
The flag state of a commercial vessel is the state under whose laws the vessel is registered or licensed.
The flag state of a commercial vessel is the state under whose laws the vessel is registered or licensed.
Flank speed
Flank speed is a nautical term referring to a ship's true maximum speed, beyond the speed that can be reached by traveling at full speed.
Flank speed is a nautical term referring to a ship's true maximum speed, beyond the speed that can be reached by traveling at full speed.
Footrope
Each yard on a square rigged sailing ship is equipped with a footrope for sailors to stand on while setting or stowing the sails.
Each yard on a square rigged sailing ship is equipped with a footrope for sailors to stand on while setting or stowing the sails.
Forecastle
Forecastle refers to the upper deck of a sailing ship forward of the foremast.
Forecastle refers to the upper deck of a sailing ship forward of the foremast.
Forestay
On a sailing vessel, a forestay, sometimes just called a stay, is a piece of standing rigging which keeps a mast from falling backwards.
On a sailing vessel, a forestay, sometimes just called a stay, is a piece of standing rigging which keeps a mast from falling backwards.
Forward (aircraft)
Forward (, and often written "for'ard") or fore, in naval terminology, is an adjective or adverb meaning "towards the bow (front) of the ship", when the frame of reference is within the ship.
Forward (, and often written "for'ard") or fore, in naval terminology, is an adjective or adverb meaning "towards the bow (front) of the ship", when the frame of reference is within the ship.
Foul (nautical)
Foul is a nautical term meaning to entangle or entwine, and more generally that something is wrong or difficult.
Foul is a nautical term meaning to entangle or entwine, and more generally that something is wrong or difficult.
Frame (nautical)
In ships, frames are ribs that are bolted to the hull and run perpendicular to the keel.
In ships, frames are ribs that are bolted to the hull and run perpendicular to the keel.
Freeboard (nautical)
In sailing and boating, freeboard means the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship.
In sailing and boating, freeboard means the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship.
Gaff rig
Gaff rig is a sailing rig in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar called the gaff.
Gaff rig is a sailing rig in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar called the gaff.
Gaff vang
A gaff vang is a line on a gaff rig sailboat used to exert lateral force on the gaff and thus control the shape of the sail.
A gaff vang is a line on a gaff rig sailboat used to exert lateral force on the gaff and thus control the shape of the sail.
Galley (kitchen)
The galley is the compartment of a ship, train or aircraft where food is cooked and prepared.
The galley is the compartment of a ship, train or aircraft where food is cooked and prepared.
Glossary of nautical terms
This is a glossary of nautical terms; some remain current, while many date from the 17th-19th century.
This is a glossary of nautical terms; some remain current, while many date from the 17th-19th century.
Gross register tonnage
Gross register tonnage is a measure of the internal volume of a ship expressed in units of "register ton", and represents the total internal volume of a vessel, while net register tonnage accou...
Gross register tonnage is a measure of the internal volume of a ship expressed in units of "register ton", and represents the total internal volume of a vessel, while net register tonnage accou...
Hack watch
A hack watch is a watch used on a ship's deck when taking astronomical sights for navigational purposes.
A hack watch is a watch used on a ship's deck when taking astronomical sights for navigational purposes.
Half hull model ship
A half hull model ship (also known as a "half hull" or "half ship") is a wooden model ship featuring only one half of a boat's hull without rigging or other fixtures.
A half hull model ship (also known as a "half hull" or "half ship") is a wooden model ship featuring only one half of a boat's hull without rigging or other fixtures.
Halyard
In sailing, a halyard or halliard is a line (rope) that is used to hoist a sail, a flag or a yard.
In sailing, a halyard or halliard is a line (rope) that is used to hoist a sail, a flag or a yard.
Handy billy
Handy billy -- also known as Handy-billie -- was/is a common emergency portable pump that was placed aboard most U.S. Navy ships since World War I.
Handy billy -- also known as Handy-billie -- was/is a common emergency portable pump that was placed aboard most U.S. Navy ships since World War I.
Harbor
A harbor or harbour, or haven, is a place where ships, boats, and barges can seek shelter through stormy weather, or else are stored for future use.
A harbor or harbour, or haven, is a place where ships, boats, and barges can seek shelter through stormy weather, or else are stored for future use.
Harbourmaster
A harbourmaster is an official responsible for enforcing the regulations of a particular harbour or port, in order to ensure the safety of navigation, the security of the harbour and the corr...
A harbourmaster is an official responsible for enforcing the regulations of a particular harbour or port, in order to ensure the safety of navigation, the security of the harbour and the corr...
Hard (nautical)
A hard is a firm or paved beach or slope by water that is convenient for hauling boats out of the water.
A hard is a firm or paved beach or slope by water that is convenient for hauling boats out of the water.
Hawsehole
Hawsehole is a nautical term for a small hole in the hull of a ship through which hawsers may be passed.
Hawsehole is a nautical term for a small hole in the hull of a ship through which hawsers may be passed.
Hawsepiper
Hawsepiper is an informal maritime industry term used to refer to a merchant ship’s officer who began his or her career as an unlicensed merchant seaman and did not attend a traditional maritime...
Hawsepiper is an informal maritime industry term used to refer to a merchant ship’s officer who began his or her career as an unlicensed merchant seaman and did not attend a traditional maritime...
Helmsman
A helmsman is a person who steers a ship, sailboat, submarine, or other type of maritime vessel.
A helmsman is a person who steers a ship, sailboat, submarine, or other type of maritime vessel.
Hogging and sagging
Hogging and sagging describe the shape of a beam or similar long object when loading is applied.
Hogging and sagging describe the shape of a beam or similar long object when loading is applied.
Holystone
Holystone is a soft and brittle sandstone that was formerly used for scouring and whitening the wooden decks of ships.
Holystone is a soft and brittle sandstone that was formerly used for scouring and whitening the wooden decks of ships.
Hot racking
Hot racking (also known as hot bunking or hot bedding) is the sanctioned practice within military organizations of assigning more than one crew member to a bed or "rack" to reduce be...
Hot racking (also known as hot bunking or hot bedding) is the sanctioned practice within military organizations of assigning more than one crew member to a bed or "rack" to reduce be...
Hotel Electric Power
Hotel Electric Power (HEP) is a maritime term referring to electricity generated and used aboard a ship for purposes other than propulsion such as lighting, communications, climate control, refr...
Hotel Electric Power (HEP) is a maritime term referring to electricity generated and used aboard a ship for purposes other than propulsion such as lighting, communications, climate control, refr...
Hull-down
The term hull-down describes the situation where the upper part of a vessel or vehicle is visible, but the main, lower body (hull) is not; the opposite term hull-up describes the situation...
The term hull-down describes the situation where the upper part of a vessel or vehicle is visible, but the main, lower body (hull) is not; the opposite term hull-up describes the situation...
Icing (nautical)
Icing on ships is a serious hazard where cold temperatures (below about -10°C) combined with high wind speed (typically force 8 or above on the Beaufort scale) result in spray blown off the sea ...
Icing on ships is a serious hazard where cold temperatures (below about -10°C) combined with high wind speed (typically force 8 or above on the Beaufort scale) result in spray blown off the sea ...
Inglefield clip
The Inglefield clip (also known as a sister clip and a Brummel hook) is a clip for joining a flag or ensign quickly, easily and securely to flag halyards so that the flag can be hoisted.
The Inglefield clip (also known as a sister clip and a Brummel hook) is a clip for joining a flag or ensign quickly, easily and securely to flag halyards so that the flag can be hoisted.
Jack Tar
Jack Tar was a common English term used to refer to seamen of the Merchant or Royal Navy, particularly during the period of the British Empire.
Jack Tar was a common English term used to refer to seamen of the Merchant or Royal Navy, particularly during the period of the British Empire.
Jackline
A jackline is a rope or wire strung from a ship's bow to stern to which a safety harness can be clipped, allowing a crewmember to move about the deck safely when there is risk of falling or bein...
A jackline is a rope or wire strung from a ship's bow to stern to which a safety harness can be clipped, allowing a crewmember to move about the deck safely when there is risk of falling or bein...
Jackstaff
A jackstaff is a small vertical spar (pole) in the bow of a ship, on which a particular type of flag, known as a jack, is flown.
A jackstaff is a small vertical spar (pole) in the bow of a ship, on which a particular type of flag, known as a jack, is flown.
Jus naufragii
The jus naufragii (right of shipwreck), sometimes lex naufragii (law of shipwreck), was a medieval custom (never actually a law) which allowed the inhabitants or lord of a territor...
The jus naufragii (right of shipwreck), sometimes lex naufragii (law of shipwreck), was a medieval custom (never actually a law) which allowed the inhabitants or lord of a territor...
Keel
In boats and ships, keel can refer to either of two parts: a structural element, or a hydrodynamic element.
In boats and ships, keel can refer to either of two parts: a structural element, or a hydrodynamic element.
Keel depth
Keel depth (sometimes given as Depth to keel) is the depth (or draft) of water from the water surface to the keel of a submarine, its deepest part.
Keel depth (sometimes given as Depth to keel) is the depth (or draft) of water from the water surface to the keel of a submarine, its deepest part.
Kelson
The kelson or keelson is the member which, particularly in a wooden vessel, lies parallel with its keel but above the transverse members such as timbers, frames or in a larger vessel, floors.
The kelson or keelson is the member which, particularly in a wooden vessel, lies parallel with its keel but above the transverse members such as timbers, frames or in a larger vessel, floors.
Lanby buoy
Lanby buoy is a contraction of Large Automatic Navigation BuoY. Lanby buoys were originally made by Hawker Siddeley Dynamics and were used from the 1970s onwards.
Lanby buoy is a contraction of Large Automatic Navigation BuoY. Lanby buoys were originally made by Hawker Siddeley Dynamics and were used from the 1970s onwards.
Lascar
A lascar and was a sailor or militiaman from the Indian Subcontinent or other countries east of the Cape of Good Hope, employed on European ships from the 16th century until the beginning of the...
A lascar and was a sailor or militiaman from the Indian Subcontinent or other countries east of the Cape of Good Hope, employed on European ships from the 16th century until the beginning of the...
Lattice mast
Lattice masts, or cage masts, are a type of observation mast common on major warships in the early 20th century.
Lattice masts, or cage masts, are a type of observation mast common on major warships in the early 20th century.
Leading lights
Leading lights are a pair of light beacons, used in navigation to indicate a safe passage for vessels entering a shallow or dangerous channel; and may also be used for position fixing.
Leading lights are a pair of light beacons, used in navigation to indicate a safe passage for vessels entering a shallow or dangerous channel; and may also be used for position fixing.
Lee shore
The terms lee shore and windweather or ward shore are nautical terms used to describe a stretch of shoreline.
The terms lee shore and windweather or ward shore are nautical terms used to describe a stretch of shoreline.
Leeway
Leeway is the motion of an object that is floating in the water to leeward due to the component of the wind vector perpendicular to the object’s.
Leeway is the motion of an object that is floating in the water to leeward due to the component of the wind vector perpendicular to the object’s.
Licensed mariner
A licensed mariner is a person who holds a license issued by one or more countries to hold senior positions aboard ships, boats, and similar vessels.
A licensed mariner is a person who holds a license issued by one or more countries to hold senior positions aboard ships, boats, and similar vessels.
Limber hole
A limber hole is a drain hole through a frame in a boat designed to prevent water from accumulating against one side of the frame.
A limber hole is a drain hole through a frame in a boat designed to prevent water from accumulating against one side of the frame.
Linear scale
A linear scale, also called a bar scale, scale bar, graphic scale, or graphical scale, is a means of visually showing the scale of a map, nautical chart, engineering draw...
A linear scale, also called a bar scale, scale bar, graphic scale, or graphical scale, is a means of visually showing the scale of a map, nautical chart, engineering draw...
Loblolly boy
A loblolly boy on a warship was a non-professional assistant to the ship's surgeon.
A loblolly boy on a warship was a non-professional assistant to the ship's surgeon.
LORAN
LORAN is a terrestrial radio navigation system using low frequency radio transmitters in multiple deployment to determine the location and speed of the receiver.
LORAN is a terrestrial radio navigation system using low frequency radio transmitters in multiple deployment to determine the location and speed of the receiver.
Lumber hooker
Lumber hooker is a nautical term for a Great Lakes ship designed to carry her own deck load of lumber and to tow one or two barges.
Lumber hooker is a nautical term for a Great Lakes ship designed to carry her own deck load of lumber and to tow one or two barges.
Lying ahull
In sailing, lying ahull is a controversial method of weathering a storm, by downing all sails, battening the hatches and locking the tiller to leeward.
In sailing, lying ahull is a controversial method of weathering a storm, by downing all sails, battening the hatches and locking the tiller to leeward.
Marina
A marina (from Sp. or It. "marina", coast or shore) is a dock or basin with moorings and supplies for yachts and small boats.
A marina (from Sp. or It. "marina", coast or shore) is a dock or basin with moorings and supplies for yachts and small boats.
Marine technology
Marine technology is defined by WEGEMT (a European association of 40 universities in 17 countries) as "technologies for the safe use, exploitation, protection of, and intervention in, the marine...
Marine technology is defined by WEGEMT (a European association of 40 universities in 17 countries) as "technologies for the safe use, exploitation, protection of, and intervention in, the marine...
Maritime pilot
A pilot is a mariner who guides ships through dangerous or congested waters, such as harbors or river mouths.
A pilot is a mariner who guides ships through dangerous or congested waters, such as harbors or river mouths.
Maritime security (USCG)
Maritime security is concerned with the prevention of intentional damage through sabotage, subversion, or terrorism.
Maritime security is concerned with the prevention of intentional damage through sabotage, subversion, or terrorism.
Marlinspike
Marlinspike is a tool used in ropework for tasks such as unlaying rope for splicing, untying knots, forming a toggle, or forming a makeshift handle.
Marlinspike is a tool used in ropework for tasks such as unlaying rope for splicing, untying knots, forming a toggle, or forming a makeshift handle.
Masula boat
Masula boat, also known as masoola or masulah boat, is a kind of non-rigid boat built without knees used on the coast of Madras, India, along with catamarans.
Masula boat, also known as masoola or masulah boat, is a kind of non-rigid boat built without knees used on the coast of Madras, India, along with catamarans.
Merchant Navy (United Kingdom)
The Merchant Navy is the maritime register of the United Kingdom, and describes the seagoing commercial interests of UK-registered ships and their c :Main articles: Battle of the Atlantic and ...
The Merchant Navy is the maritime register of the United Kingdom, and describes the seagoing commercial interests of UK-registered ships and their c :Main articles: Battle of the Atlantic and ...
Monkey's fist
A monkey's fist or monkey paw is a type of knot, so named because it looks somewhat like a small bunched fist/paw.
A monkey's fist or monkey paw is a type of knot, so named because it looks somewhat like a small bunched fist/paw.
Mooring (watercraft)
Mooring is often accomplished using thick ropes called mooring lines or hawsers.
Mooring is often accomplished using thick ropes called mooring lines or hawsers.
Moorsom System
The Moorsom System is a method created in Great Britain of calculating the tonnage or cargo capacity of sailing ships as a basis for assessing harbour and other vessel fees.
The Moorsom System is a method created in Great Britain of calculating the tonnage or cargo capacity of sailing ships as a basis for assessing harbour and other vessel fees.
Muster drill
A muster drill (also sometimes referred to as a lifeboat drill or a boat drill) is an exercise conducted by the crew of a ship prior to embarking on a voyage.
A muster drill (also sometimes referred to as a lifeboat drill or a boat drill) is an exercise conducted by the crew of a ship prior to embarking on a voyage.
Nantucket sleighride
A Nantucket sleighride was a term used by Nantucket whalemen to describe what occurs immediately following the harpooning of a whale.
A Nantucket sleighride was a term used by Nantucket whalemen to describe what occurs immediately following the harpooning of a whale.
Naval drifter
A naval drifter is a boat built along the lines of a commercial fishing drifter but fitted out for naval purposes.
A naval drifter is a boat built along the lines of a commercial fishing drifter but fitted out for naval purposes.
Navigation light
A navigation light is a colored source of illumination on an aircraft, spacecraft, or waterborne vessel, used to signal a craft's position, heading, and status.
A navigation light is a colored source of illumination on an aircraft, spacecraft, or waterborne vessel, used to signal a craft's position, heading, and status.
Navigational aid
A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to na...
A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to na...
Near-shore salute
A near-shore salute or a sail-by salute is the custom of a ship saluting those on land, or another ship, often by deviating from the charted route.
A near-shore salute or a sail-by salute is the custom of a ship saluting those on land, or another ship, often by deviating from the charted route.
Net register tonnage
Tonnage is a measure of the size or cargo carrying capacity of a ship.
Tonnage is a measure of the size or cargo carrying capacity of a ship.
Net tonnage
Net tonnage (often abbreviated as NT, N.T. or nt) is a dimensionless index calculated from the total moulded volume of the ship's cargo spaces by using a mathematical formula.
Net tonnage (often abbreviated as NT, N.T. or nt) is a dimensionless index calculated from the total moulded volume of the ship's cargo spaces by using a mathematical formula.
Nguzu nguzu
The nguzu nguzu (sometimes called a musu musu or toto isu) is the traditional figurehead which was formerly affixed to canoes in the Solomon Islands.
The nguzu nguzu (sometimes called a musu musu or toto isu) is the traditional figurehead which was formerly affixed to canoes in the Solomon Islands.
Officer of the Deck
Officer of the Deck is a position in the United States Navy and United States Coast Guard that confers certain authority and responsibility.
Officer of the Deck is a position in the United States Navy and United States Coast Guard that confers certain authority and responsibility.
Officer of the deck
Officer of the deck is a position in the United States Navy and United States Coast Guard that confers certain authority and responsibility.
Officer of the deck is a position in the United States Navy and United States Coast Guard that confers certain authority and responsibility.
Old salt
An "old salt" in the English speaking naval services is often a raconteur, or teller of sea stories.
An "old salt" in the English speaking naval services is often a raconteur, or teller of sea stories.
Over-canvassed sailing
A sailing boat that is carrying too much sail for the current wind conditions is said to be over-canvassed.
A sailing boat that is carrying too much sail for the current wind conditions is said to be over-canvassed.
Padeye
A padeye is a device often found on boats that a line runs through, or provides an attachment point.
A padeye is a device often found on boats that a line runs through, or provides an attachment point.
Pagoda mast
The Pagoda mast was a type of superstructure that was common on Japanese warships that were reconstructed during the 1930s in a bid to improve their fighting performance.
The Pagoda mast was a type of superstructure that was common on Japanese warships that were reconstructed during the 1930s in a bid to improve their fighting performance.
Painter (rope)
A painter is a rope that is attached to the bow of a boat and used for tying up or for towing.
A painter is a rope that is attached to the bow of a boat and used for tying up or for towing.
Permeability (nautical)
Permeability of a space in a ship is the percentage of empty volume in that space.
Permeability of a space in a ship is the percentage of empty volume in that space.
Pilot ladder
A Pilot ladder is a highly specialised form of rope ladder, typically used on board cargo vessels for the purposes of embarking and disembarking pilots.
A Pilot ladder is a highly specialised form of rope ladder, typically used on board cargo vessels for the purposes of embarking and disembarking pilots.
Plankowner
A plankowner (also referred to a plank owner) is an individual who was a member of the crew of a ship when that ship was placed in commission.
A plankowner (also referred to a plank owner) is an individual who was a member of the crew of a ship when that ship was placed in commission.
Poop deck
In naval architecture, a poop deck is a deck that forms the roof of a cabin built in the rear, or "aft", part of the superstructure of a ship.
In naval architecture, a poop deck is a deck that forms the roof of a cabin built in the rear, or "aft", part of the superstructure of a ship.
Port
A port is a location on a coast or shore containing one or more harbors where ships can dock and transfer people or cargo to or from land.
A port is a location on a coast or shore containing one or more harbors where ships can dock and transfer people or cargo to or from land.
Port and starboard
Port and starboard are nautical terms which refer to the left and right sides, respectively, of a ship or aircraft as perceived by a person on board facing the bow.
Port and starboard are nautical terms which refer to the left and right sides, respectively, of a ship or aircraft as perceived by a person on board facing the bow.
Powder-boy
powder-boy was a role of the crew manning guns of the naval artillery in the Age of Sail.
powder-boy was a role of the crew manning guns of the naval artillery in the Age of Sail.
Prize crew
Prize crew is a term used to indicate a number of crew members of a ship chosen to take over the operations of a captured ship.
Prize crew is a term used to indicate a number of crew members of a ship chosen to take over the operations of a captured ship.
Purser
A ship's purser (also purser or pusser) is the person on a ship responsible for the handling of money on board.
A ship's purser (also purser or pusser) is the person on a ship responsible for the handling of money on board.
Quarterdeck
The quarterdeck is that part of a warship designated by the commanding officer for official and ceremonial functions.
The quarterdeck is that part of a warship designated by the commanding officer for official and ceremonial functions.
Razee
A razee or razée is a sailing ship that has been cut down (razeed) to reduce the number of decks.
A razee or razée is a sailing ship that has been cut down (razeed) to reduce the number of decks.
Retired after finishing
Retired after finishing is a term used in sailing racing when a boat may retires after finishing a race.
Retired after finishing is a term used in sailing racing when a boat may retires after finishing a race.
Rigging monkey
Rigging Monkey refers to a crewmember of a sailing vessel whose primary responsibility is to climb the mast, usually with the assistance of a boatswain's chair, to work on the rigging of the ship.
Rigging Monkey refers to a crewmember of a sailing vessel whose primary responsibility is to climb the mast, usually with the assistance of a boatswain's chair, to work on the rigging of the ship.
Roller furling
Roller furling is a method of furling or reefing wherein a sail is rolled around a stay or rotating spar.
Roller furling is a method of furling or reefing wherein a sail is rolled around a stay or rotating spar.
Runabout (boat)
A runabout is any small motorboat holding between four and eight people, well suited to moving about on the water.
A runabout is any small motorboat holding between four and eight people, well suited to moving about on the water.
Sail-by salute
A sail-by salute (or near-shore salute) is a salute performed by bringing a ship close to shore to salute those on land.
A sail-by salute (or near-shore salute) is a salute performed by bringing a ship close to shore to salute those on land.
Sailing into the wind
Sailing into the wind is a sailing expression that refers to a sail boat's ability to move forward despite being headed into (or very nearly into) the wind.
Sailing into the wind is a sailing expression that refers to a sail boat's ability to move forward despite being headed into (or very nearly into) the wind.
Sailor
A sailor, mariner, or seaman is a person who navigates water-borne vessels or assists in their operation, maintenance, or service.
A sailor, mariner, or seaman is a person who navigates water-borne vessels or assists in their operation, maintenance, or service.
Sailormongering
Sailormongering is the practice of waylaying ships coming into port and luring sailors away from their posts with prostitutes.
Sailormongering is the practice of waylaying ships coming into port and luring sailors away from their posts with prostitutes.
Saintoise
The saintoise (; Antillean Creole: Sentwaz) or canot saintois (literally: dinghy from les Saintes) is a fishing boat without a deck, traditionally maneuverable with the sail or the ream.
The saintoise (; Antillean Creole: Sentwaz) or canot saintois (literally: dinghy from les Saintes) is a fishing boat without a deck, traditionally maneuverable with the sail or the ream.
Sampson post
This is a glossary of nautical terms; some remain current, many date from the 17th-19th century.
This is a glossary of nautical terms; some remain current, many date from the 17th-19th century.
Scantling
Scantling is a measurement of prescribed size, dimensions, or cross sectional areas.
Scantling is a measurement of prescribed size, dimensions, or cross sectional areas.
Scupper
A scupper is an opening in the side walls of an open-air structure, for purposes of draining water.
A scupper is an opening in the side walls of an open-air structure, for purposes of draining water.
Scuttling
Scuttling is the act of deliberately sinking a ship by allowing water to flow into the hull.
Scuttling is the act of deliberately sinking a ship by allowing water to flow into the hull.
Sea captain
A sea captain is a licensed mariner in ultimate command of the vessel.
A sea captain is a licensed mariner in ultimate command of the vessel.
Sea mark
A sea mark, also seamark and navigation mark, is a pilotage aid which identifies the approximate position of a maritime channel, hazard and administrative area to allow boats, ships ...
A sea mark, also seamark and navigation mark, is a pilotage aid which identifies the approximate position of a maritime channel, hazard and administrative area to allow boats, ships ...
Sea trial
A sea trial is the testing phase of a watercraft (including boats, ships, and submarines).
A sea trial is the testing phase of a watercraft (including boats, ships, and submarines).
Seafarer's professions and ranks
Seafarers hold a variety of professions and ranks, and each of these roles carries unique responsibilities which are integral to the successful operation of a seafaring vessel.
Seafarers hold a variety of professions and ranks, and each of these roles carries unique responsibilities which are integral to the successful operation of a seafaring vessel.
Seakeeping
Seakeeping ability is a measure of how well-suited a watercraft is to conditions when underway.
Seakeeping ability is a measure of how well-suited a watercraft is to conditions when underway.
Second assistant engineer
A Second Assistant Engineer or Third Engineer is a licensed member of the engineering department on a merchant vessel.
A Second Assistant Engineer or Third Engineer is a licensed member of the engineering department on a merchant vessel.
Second mate
A second mate (2/M) or second officer is a licensed member of the deck department of a merchant ship.
A second mate (2/M) or second officer is a licensed member of the deck department of a merchant ship.
Semi submarine
Semi-submarines are submersibles vessels that are capable of diving, similarly to submarines.
Semi-submarines are submersibles vessels that are capable of diving, similarly to submarines.
Semi-submarine
Semi-submarines are submersibles vessels that are capable of diving, similarly to submarines.
Semi-submarines are submersibles vessels that are capable of diving, similarly to submarines.
Shakedown cruise
Shakedown cruise is a nautical term in which the performance of a ship is tested.
Shakedown cruise is a nautical term in which the performance of a ship is tested.
Shank painter
In sailing, a shank painter is a short rope or chain by which the shank of an anchor is held fast to a ship's side when not in use.
In sailing, a shank painter is a short rope or chain by which the shank of an anchor is held fast to a ship's side when not in use.
Sheet (sailing)
In sailing, a sheet is a line (rope, cable or chain) used to control the movable corner(s) (clews) of a sail.
In sailing, a sheet is a line (rope, cable or chain) used to control the movable corner(s) (clews) of a sail.
Shell plating
Shell plating is the outer-most structure on the hull of a steel or aluminum ship or boat.
Shell plating is the outer-most structure on the hull of a steel or aluminum ship or boat.
Ship Camel
A Ship camel is a floating device, or system of devices, which is attached to a ship to raise the ship in the water temporarily.
A Ship camel is a floating device, or system of devices, which is attached to a ship to raise the ship in the water temporarily.
Ship measurements
Ship measurements consist of a multitude of terms and definitions specifically related to ships.
Ship measurements consist of a multitude of terms and definitions specifically related to ships.
Ship motions
Ship motions are defined by the six degrees of freedom that a ship, boat or any other craft can experience.
Ship motions are defined by the six degrees of freedom that a ship, boat or any other craft can experience.
Ship's bell
A ship's bell is usually made of bronze and often has the ship's name engraved or cast on it.
A ship's bell is usually made of bronze and often has the ship's name engraved or cast on it.
Ship's doctor
A Ship's doctor or Ship's surgeon is the person responsible for the health of the people aboard a ship whilst at sea.
A Ship's doctor or Ship's surgeon is the person responsible for the health of the people aboard a ship whilst at sea.
Shipmaster
The captain (alt. master or shipmaster) of a merchant vessel is a licensed mariner in ultimate command of the vessel.
The captain (alt. master or shipmaster) of a merchant vessel is a licensed mariner in ultimate command of the vessel.
Shipmate
A shipmate is literally a mate on one's own ship (i.e., a member of the same ship).
A shipmate is literally a mate on one's own ship (i.e., a member of the same ship).
Shroud (sailing)
On a sailboat, the shrouds are pieces of standing rigging which hold the mast up from side to side.
On a sailboat, the shrouds are pieces of standing rigging which hold the mast up from side to side.
Skeleton crew
A skeleton crew is the minimum number of personnel needed to operate and maintain an item at its most simple operating requirements, such as a ship or business, during an emergency and, at the s...
A skeleton crew is the minimum number of personnel needed to operate and maintain an item at its most simple operating requirements, such as a ship or business, during an emergency and, at the s...
Ski boat
In boating, a ski boat is a boat specifically designed to safely tow one or more water skiers.
In boating, a ski boat is a boat specifically designed to safely tow one or more water skiers.
Skin girth
Skin girth is a measurement of a yacht hull.
Skin girth is a measurement of a yacht hull.
Small craft advisory
A small craft advisory is a type of warning issued by the National Weather Service in the United States, most frequently in coastal areas.
A small craft advisory is a type of warning issued by the National Weather Service in the United States, most frequently in coastal areas.
Smooth curve hull
Smooth curve hulls are hulls that are rounded and don't usually have any chines or corners.
Smooth curve hulls are hulls that are rounded and don't usually have any chines or corners.
Sound (nautical)
In nautical terms, the word Sound is used to describe the process of determining the depth of water in a tank or under a ship.
In nautical terms, the word Sound is used to describe the process of determining the depth of water in a tank or under a ship.
Spar buoy
A spar buoy is a tall, thin buoy that floats upright in the water and is characterized by a small water plane area and a large mass.
A spar buoy is a tall, thin buoy that floats upright in the water and is characterized by a small water plane area and a large mass.
Spinnaker
A spinnaker is a special type of sail that is designed specifically for sailing off the wind from a reaching course to a downwind, i.e. with the wind 90°–180° off the bow.
A spinnaker is a special type of sail that is designed specifically for sailing off the wind from a reaching course to a downwind, i.e. with the wind 90°–180° off the bow.
Splice the mainbrace
"Splice the mainbrace" is an order given aboard naval vessels to issue the crew with a drink.
"Splice the mainbrace" is an order given aboard naval vessels to issue the crew with a drink.
Square (sailing)
The term to square a yard is used when sailing a square-rigged ship.
The term to square a yard is used when sailing a square-rigged ship.
Steerage
Steerage is the act of steering a ship.
Steerage is the act of steering a ship.
Stem (ship)
The stem is the very most forward part of a boat or ship's bow and is an extension of the keel itself and curves up to the wale of the boat.
The stem is the very most forward part of a boat or ship's bow and is an extension of the keel itself and curves up to the wale of the boat.
Stern
The stern is the rear or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail.
The stern is the rear or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail.
Sternwalk
A sternwalk is a balcony on the outside of the hull on the stern of a ship, usually reserved for the highest-ranking officer onboard.
A sternwalk is a balcony on the outside of the hull on the stern of a ship, usually reserved for the highest-ranking officer onboard.
Stockless anchor
A stockless anchor or a patent anchor is a type of anchor.
A stockless anchor or a patent anchor is a type of anchor.
Stowage
In naval architecture, stowage is the amount of room available for stowing materials aboard a ship.
In naval architecture, stowage is the amount of room available for stowing materials aboard a ship.
Surgeon's mate
A surgeon's mate was a rank in the Royal Navy for a medically trained assistant to the ship's surgeon.
A surgeon's mate was a rank in the Royal Navy for a medically trained assistant to the ship's surgeon.
Tack (sailing)
Tack is a term used in sailing that has different meanings in different contexts, variously a part of a sail, and an alignment with the wind.
Tack is a term used in sailing that has different meanings in different contexts, variously a part of a sail, and an alignment with the wind.
Tacking (sailing)
Tacking or coming about is a sailing maneuver by which a sailing vessel (which is sailing approximately into the wind) turns its bow through the wind so that the direction from which the w...
Tacking or coming about is a sailing maneuver by which a sailing vessel (which is sailing approximately into the wind) turns its bow through the wind so that the direction from which the w...
Third assistant engineer
The Third Assistant Engineer, also known as the Fourth Engineer, is a licensed member of the engineering department on a merchant vessel.
The Third Assistant Engineer, also known as the Fourth Engineer, is a licensed member of the engineering department on a merchant vessel.
Third mate
A Third Mate or Third Officer is a licensed member of the deck department of a merchant ship.
A Third Mate or Third Officer is a licensed member of the deck department of a merchant ship.
Tonnage
Tonnage is a measure of the size or cargo carrying capacity of a ship.
Tonnage is a measure of the size or cargo carrying capacity of a ship.
Topsides
On an offshore oil platform, Topsides refers to the surface hardware installed.
On an offshore oil platform, Topsides refers to the surface hardware installed.
Trailboard
The trailboards are a pair of boards that may be found at the bow of certain sailing vessels, where they run from the figurehead or billethead back to or towards the hawsepipe.
The trailboards are a pair of boards that may be found at the bow of certain sailing vessels, where they run from the figurehead or billethead back to or towards the hawsepipe.
Turtling (sailing)
In dinghy sailing, a boat is said to be turtling when the boat is fully inverted with the mast pointing down to the seabed.
In dinghy sailing, a boat is said to be turtling when the boat is fully inverted with the mast pointing down to the seabed.
Twenty-foot equivalent unit
The twenty-foot equivalent unit (often TEU or teu) is an inexact unit of cargo capacity often used to describe the capacity of container ships and container terminals.
The twenty-foot equivalent unit (often TEU or teu) is an inexact unit of cargo capacity often used to describe the capacity of container ships and container terminals.
Underway
Underway, or Under Way is a nautical term describing the state of a vessel.
Underway, or Under Way is a nautical term describing the state of a vessel.
Unstayed mast
An unstayed mast (also known as a freestanding mast) is a type of mast on a boat that is not supported by any stays.
An unstayed mast (also known as a freestanding mast) is a type of mast on a boat that is not supported by any stays.
Velocity made good
Velocity made good, or "vmg," is a term in sailing, and specifically yacht racing, that refers to the component of a sailboat's velocity that is in the direction of the next mark.
Velocity made good, or "vmg," is a term in sailing, and specifically yacht racing, that refers to the component of a sailboat's velocity that is in the direction of the next mark.
Waif
A waif (from the Old French guaif, stray beast) is a living creature removed, by hardship, loss or other helpless circumstance, from his original surroundings.
A waif (from the Old French guaif, stray beast) is a living creature removed, by hardship, loss or other helpless circumstance, from his original surroundings.
Waist clothes
Waist clothes, also called armings or fights, were colored clothes or sheets, usually red, that were hung around the outside of a ship's upper works, fore and aft, and before the cub...
Waist clothes, also called armings or fights, were colored clothes or sheets, usually red, that were hung around the outside of a ship's upper works, fore and aft, and before the cub...
Walkaround (boat)
A Walkaround boat is a cross between a center console and a cuddy boat or express.
A Walkaround boat is a cross between a center console and a cuddy boat or express.
Watch system
A watch system, watch schedule or watch bill is a method of assigning regular periods of work duty aboard ships and some other areas of employment.
A watch system, watch schedule or watch bill is a method of assigning regular periods of work duty aboard ships and some other areas of employment.
Watercraft
A watercraft is a vessel or craft designed to move across or through water.
A watercraft is a vessel or craft designed to move across or through water.
Weather buoy
Weather buoys are instruments which collect weather and ocean data within the world's oceans, as well as aiding during emergency response to chemical spills, legal proceedings, and engineering d...
Weather buoys are instruments which collect weather and ocean data within the world's oceans, as well as aiding during emergency response to chemical spills, legal proceedings, and engineering d...
Weather gage
The weather gage (sometimes spelled weather gauge) is a nautical term used to describe the advantageous position of a fighting sailing vessel, relative to another.
The weather gage (sometimes spelled weather gauge) is a nautical term used to describe the advantageous position of a fighting sailing vessel, relative to another.
Weigh anchor
Weigh anchor is a nautical term indicating the final preparation of a sea vessel for getting underway.
Weigh anchor is a nautical term indicating the final preparation of a sea vessel for getting underway.
Well dock
A well deck or well dock is a hangar-like deck located at the waterline in the stern of some amphibious warfare ships.
A well deck or well dock is a hangar-like deck located at the waterline in the stern of some amphibious warfare ships.
Windage
Windage is a force created on an object by friction when there is relative movement between air and the object.
Windage is a force created on an object by friction when there is relative movement between air and the object.
Wing dam
A wing dam is a manmade barrier that, unlike a conventional dam, only extends partway into a river.
A wing dam is a manmade barrier that, unlike a conventional dam, only extends partway into a river.