Boom

Blanket

To interpose a sail or other object between the wind and another sail so the downwind sail…

Bail

To remove water from inside the vessel, traditionally with a bucket or scoop.

Bulwark

A solid raised extension of the topsides above deck level, providing a barrier against fal…

Beam

The greatest width of the vessel measured at its widest point.

Bow Spring

A dockline led from the bow aft along the dock, preventing the boat from surging forward.

Bilge

The lowest internal part of the hull, where water inevitably drains and collects.