Heave

Head to wind

The moment when the bow is pointing directly into the wind — for instance, the centre of a…

Holding ground

The character of the seabed in an anchorage — e.g. mud, sand, weed, rock — which determine…

Heel

The sideways lean of the hull caused by wind pressure on the sails.

Heading sensor

A solid-state (usually fluxgate or MEMS) compass providing a fast-updating digital heading…

Hatch

A large, usually closable opening in the deck or coachroof for access, ventilation, or lig…

Halyard

A line used to hoist, hold up, or lower a sail.