Helm

Heavy weather

Conditions of strong wind and significant sea state.

Helmsman

The crew member steering the boat at a given moment.

Headboard

A small reinforcing plate built into the head of a sail to spread halyard load.

Hydrogenerator

A towed or transom-mounted propeller-driven generator that extracts electrical energy from…

Headsail

Any sail set forward of the mast — jib, genoa, staysail, or code zero — typically attached…

Hank

A piston or snap hook used to attach the luff of a foresail at intervals along the foresta…