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Marine Glossary Terms

Learn marine and sailing terms quickly by searching through the information available below.

Inboard : Located within the hull of a vessel

Inshore : Coming from the sea toward the land;close to a shore

Jack : A sailor

Jetsam : Flotsam. The floating wreckage of a ship

Jib : Any triangular fore-and-aft sail

Jibe : Gybe. To change the course so that the stern moves through the wind.

In this maneuver, the stern of the boat goes through the wind as one changes from a broad reach on one tack (direction) to a broad reach in the other tack (direction). Both the jib and mainsail will need adjusting. The mainsail is first centered, the turn made and the mainsail is then let out. The jib's working sheet is changed and the new working sheet is placed on a winch.

Jigger-mast : The fourth mast of a ship

Keel : One of the main beams of the hull of a vessel running lengthwise along the center line from bow to stern

Ketch : A sailing vessel with two masts

Knot : A unit of speed - one nautical mile per hour

League : An obsolete unit of distance of variable length (normally 3 miles)

Leech : Back edge of the sail

Leeward : The opposite direction from which the wind is blowing

Lifeboat : A boat to rescue people from a sinking vessel

Luff : The forward edge of a fore-and-aft sail that is next to the mast

Luffing : The flapping of the whole sail, flogging - when sails are over eased

Lugsail : A four-sided sail bent and hoisted on a yard

Mainsail : The sail aft of the mast which is attached to the mast and the boom

Marina : A dock for boats and yachts

Mast : A vertical pole for supporting sails

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