By the lee

A run in which the wind is coming over the same side of the boat as the boom — a configuration that invites an accidental gybe.

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Related B-terms

Bottom

The underwater surface of the hull.

Bow thruster

A small transverse propeller mounted in a tunnel near the bow that pushes the bow sideways…

Breastline

A short line led directly from the vessel to the dock, holding the hull close alongside.

Boat hook

A shaft with a hook and a blunt end, used for snagging mooring lines, retrieving overboard…

Bail

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

Ballast

Weight — usually carried low in the keel — that lowers the centre of gravity and gives the…

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