Bolsters. Pieces of soft wood, covered with canvass, placed on the trestle-trees, for the eyes of the rigging to rest upon.
Bolts. Long cylindrical bars of iron or copper, used to secure or unite the different parts of a vessel.
Bolt-rope. The rope which goes round a sail, and to which the canvass is sewed.
Bonnet. An additional piece of canvass attached to the foot of a jib, or a schooner's foresail, by lacings. Taken off in bad weather.
Boom. A spar used to extend the foot of a fore-and-aft sail or studdingsail.
Boom-irons. Iron rings on the yards, through which the studdingsail booms traverse.
Boot-topping. Scraping off the grass, or other matter, which may be on a vessel's bottom, and daubing it over with tallow, or some mixture.
Bound. Wind-bound. When a vessel is kept in port by a head wind.
Bow. The rounded part of a vessel, forward.
Bower. A working anchor, the cable of which is bent and reeved through the hawse-hole.