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The Dictionary of English Nautical Language Database: Search Results

  Your search returned 136 matches.
 Pages: [<<] 1 2 3 4 5 6 [>>]
Term: arm (n)
Definition: 1) A branching waterway from a harbor or bay. 2) The crosspiece of an anchor from the crown to flukes.
See Also: anchor, crown

Term: arm the lead (v)
Definition: To insert grease in the hollow of the lead weight at the end of a sounding line in order to bring up a sample of the bottom. That information is helpful in coastal navigation and in determining a suitable anchorage.
See Also: leadline, sounding

Term: armada (n)
Definition: A large fleet of warships, though the term may be used symbolically to signify any large moving group of vessels.

Term: Articles of War (n)
Definition: Regulations of the Royal Navy from the middle of the 17th Century detailing the code of discipline for the fleet, and setting down the rules for taking and dividing “prize” ships and the spoils of war.

Term: ash can (n)
Definition: A World War II slang term for a depth charge.

Term: ashore (n)
Definition: On shore, on the beach; as in: “The captain is going ashore this morning.”

Term: aspect ratio (n)
Definition: The proportional relationship of the length of the boom to the height of a triangular sail. A long boom and short luff would be described as "low aspect ratio, while a very tall sail with a short boom is a "high aspect ratio" sail plan.
See Also: marconi rig

Term: aspect ratio (n)
Definition: The proportional relationship of the length of the boom to the height of a triangular sail. A long boom and short luff would be described as "low aspect ratio", while a very tall sail with a short boom is a "high aspect ratio" sail plan.
See Also: marconi rig

Term: assault boat (n)
Definition: A small portable boat used for military amphibious landings or for crossing rivers.

Term: astarboard (pron: starb'd) (adv)
Definition: In the direction of the right side of the ship when facing forward, as in: "After passing the marker, turn hard astarboard."
See Also: aport, starboard, steering board

Term: astern (adv)
Definition: Behind or off the stern of a ship. At or toward the stern; as in: “We left the mark astern” (or) “maneuver astern until we clear the piling.”

Term: astrolabe (n)
Definition: A primitive portable instrument used to measure celestial angles. The predecessor to the sextant.
See Also: alidade

Term: astronavigation (n)
Definition: Celestial navigation, or fixing position by sightings of celestial bodies.

Term: astronomical almanac (n)
Definition: A catalogue of tables showing the location of various celestial bodies at specific moments in time throughout the year; consulted by the navigator in preparation for taking sights of celestial bodies. Such tables were known as "The Ephemeris" since the 18th C. until 1981 when it was jointly published by the US and Britian.
See Also: ephemeris, nautical almanac

Term: asymmetrical (adj)
Definition: Not symmetrical, unalike on opposite sides. Used to describe certain catamaran hulls, which are designed with a broader shape on one side than the other so that the hull acts as a foil.
See Also: foil

Term: athwart (adv)
Definition: Across a ship from side to side; as in: “The dinghy was mounted athwart the cabin top.”

Term: athwartship (adj)
Definition: Lying across the ship from side to side; as in: “The athwartship timbers are called frames.”
See Also: athwartships

Term: athwartships (adv)
Definition: Across the ship from side to side, perpendicular to the keel; as in: “The frames are laid athwartships.”

Term: Atlantic (adj)
Definition: 1) Of or relating to the Atlantic Ocean 2) The nations bordering on the Atlantic Ocean; as in: “...the Atlantic Provinces.”

Term: atmospherics (n pl)
Definition: Interference in reception of radio communications caused by natural phenomena such as lightening or sunspots; as in: “The atmospherics are so bad I can’t read his signal.”

Term: atoll (n)
Definition: A coral island, more common in the South Pacific, surrounded by a lagoon and a roughly circular coral reef.
See Also: reef

Term: Aurora Australis (n)
Definition: A geomagnetic show of lights seen in the far Southern skies at night. Sunspots release storms of solar radiation that interact with the earth’s magnetic field causing the startling and beautiful light shows.
See Also: Aurora Borealis

Term: Aurora Borealis (n)
Definition: The Northern lights, a nighttime phenomenon seen in the far Northern skies, displaying streaks, ribbons, arches and curtains of light, generated as radiation from solar flares interact with the earth’s magnetic field. Aurora means dawn, and Boreal means North.
See Also: Aurora Australis

Term: automatic pilot (n)
Definition: An electromechanical device which steers ships along a preset course. Usually the device consists of a gyrocompass, a sender and a slave unit at the helm which operates a servo motor to steer the ship. Some modern devices are operated from information provided by satellite navigation systems.
See Also: self steering

Term: autopilot (n)
Definition: Automatic pilot.


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