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A wooden part of the centerline structure of a boat, usually between the sternpost and amidships.
Industry:Boat
A wooden, in later years also iron or steel pole used to support various pieces of rigging and sails. The big five-masted full-rigged tall ship Preussen (German spelling: Preußen) had crossed 30 steel yards, but only one wooden spar - the little gaff of its spanker sail.
Industry:Boat
a young sailor, still in training
Industry:Boat
A wooden block with holes (but no pulleys) which is spliced to a shroud. It is used to adjust the tension in the standing rigging of large sailing vessels, by lacing through the holes with a lanyard to the deck. Performs the same job as a turnbuckle.
Industry:Boat
A winch mechanism, usually with a horizontal axis. Used where mechanical advantage greater than that obtainable by block and tackle was needed (such as raising the anchor on small ships).
Industry:Boat
A whistle used by Boatswains (bosuns or bos'ns) to issue commands. Consisting of a metal tube which directs the breath over an aperture on the top of a hollow ball to produce high pitched notes. The pitch of the notes can be changed by partly covering the aperture with the finger of the hand in which the pipe is held. The shape of the instrument is similar to that of a smoking pipe.
Industry:Boat
A watertight box built against the hull of the ship communicating with the sea through a grillage, to which valves and piping are attached to allow water in for ballast, engine cooling, and firefighting purposes.
Industry:Boat
A warship from the Age of Sail .
Industry:Boat
A vessel's transient motion in a fore and aft direction.
Industry:Boat
A vessel's transient, vertical, up-and-down motion.
Industry:Boat
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