Headway

Hard over

Turning the helm, tiller, or wheel as far as it will go in one direction.

Heave

To throw — usually a line.

Hatch

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

Holding tank

An on-board tank that stores sewage from the heads until it can be pumped out ashore or, w…

Heel

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

Head down

To bear away — to alter course away from the wind.