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able seaman (AB) Also able-bodied seaman. A merchant seaman qualified to perform all routine duties on a vessel, or a junior rank in some navies. aboard On or in a vessel. Synonymous with "on board". See also close aboard. about To change the course of a ship by tacking. "Ready about" is the order to prepare for tacking. [8] above board
During a storm, daggerboards can help reduce the tendency of a small boat to tip over ("breach") due to waves. A catamaran in a storm would lift the leeward hull daggerboard and fully extend the upwind daggerboard. [citation needed] If there is no wind and an outboard motor is being used, lifting the daggerboards will ensure the least drag. [3]
For this reason, it is not uncommon to find boats with a combination of shallow keel and centreboard (e.g. Randmeer). The keel provides the housing for the centreboard, moving it out of the hull, but adds only a small amount of draft to the boat. The centreboard can then be lowered in deeper waters to increase the amount of lift.
The quick turn is essentially a figure eight. On a sailboat it consists of the following steps: Change course to a beam reach and hold for 15 seconds; Head into the wind and tack, leave the jib fluttering; Veer off until the boat is at a broad reach; Turn upwind until the vessel is pointing at the victim; at this point the vessel should be on a ...
The Twister is a masthead rigged sloop, length 28 feet (8.5 metres), beam 8 feet 1 inch (2.46 metres), draft 5 feet (1.5 metres). It has a full length keel and a full-depth transom -hung rudder which is tiller steered.
A gaff cutter, Kleine Freiheit, with a genoa jib set USCGC Legare, an example of a US Coast Guard cutter A cutter is any of various types of watercraft.The term can refer to the rig (sail plan) of a sailing vessel (but with regional differences in definition), to a governmental enforcement agency vessel (such as a coast guard or border force cutter), to a type of ship's boat which can be used ...
According to traditional design principles, a boat utilizing a leeboard either needs to have two retractable leeboards, one on each side, or a method of removing the leeboard and attaching it to either side while under way, because nearly all sailboats tack to work their way upwind (with the exception of the proa). However, some small sailboat ...
In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers , which run perpendicular to the primary joists.