Search results
Results from the WOW.Com Content Network
The angle of list is the degree to which a vessel heels (leans or tilts) to either port or starboard at equilibrium—with no external forces acting upon it. [1] If a listing ship goes beyond the point where a righting moment will keep it afloat, it will capsize and potentially sink.
A rudder angle indicator is a device used to indicate the present position of the rudder blade, usually fitted near the Ship's wheel on the bridge and in the engine control room. [ 1 ] Rudder angle indicator of the MS Nordstjernen (1956) Rudder angle indicator
boom crutch A frame in which the boom rests when the sail is not hoisted. boom gallows A raised crossmember that supports a boom when the sail is lowered (and which obviates the need for a topping lift). boomie . Also booms'l rig. A ketch-rigged barge with gaff (instead of spritsail) and boom on main and mizzen. Booms'l rig could also refer to ...
An anti-submarine net or anti-submarine boom is a boom placed across the mouth of a harbour or a strait for protection against submarines. Net laying ships would be used to place and remove the nets. The US Navy used anti-submarine nets in the Pacific War to protect major US Naval Advance Bases. Some net cutter submarines were used in the war ...
A boom blocking the River Foyle during the siege of Derry. A boom or a chain (also boom defence, harbour chain, river chain, chain boom, boom chain or variants) is an obstacle strung across a navigable stretch of water to control or block navigation. In modern times they usually have civil uses, such as to prevent access to a dangerous river ...
A boom occurs when an object travels faster than the speed of sound, releasing a burst of energy that sounds similar to an explosion and can shake and rattle objects in its path.
Dover Publications, also known as Dover Books, is an American book publisher founded in 1941 by Hayward and Blanche Cirker. It primarily reissues books that are out of print from their original publishers. These are often, but not always, books in the public domain. The original published editions may be scarce or historically significant.
In sailing, a boom is a spar (pole), along the foot of a fore and aft rigged sail, that greatly improves control of the angle and shape of the sail. The primary action of the boom is to keep the foot flatter when the sail angle is away from the centerline of the boat. The boom also serves as an attachment point for more sophisticated control lines.