Shoal

Squall

A fast-moving, short-lived storm cell producing sudden strong winds and often heavy rain.

Seacock

A through-hull valve that can be opened or closed to admit water to, or prevent water from…

Stern

The aft end of the vessel.

Sheet

A line used to trim a sail — e.g. mainsheet, jib sheet, spinnaker sheet.

Starlink

A low-Earth-orbit satellite broadband system widely adopted on cruising and commercial ves…

Stack pack

A zippered mainsail cover fixed to the boom and combined with lazy jacks, so the mainsail …