The line that controls the angle of the mainsail in its relation to the wind.

A component on a compressed air line that provides wide are coverage with a thin sheet of air. Also amplifies compressed air flow, reduces noise. Used in blowing, cooling. Also known as air knife.

The vertical barrel device used to heave in cable or lines.

Sails, such as the spinnaker, reacher and reaching staysail used when running or reaching

A spring line from the stern of a boat to mid ships to stop forward movement

U.S. classification society which certifies seagoing vessels for compliance to standardized rules regarding construction and maintenance.

Navy term meaning Officer of the deck.

A gun used in the life-saving services to throw a life line to a ship in distress or from ship to shore and used when a boat cannot be launched.

Strong offshore current extending to the shore.

A member of the ship's crew.

A short strut on a mast angled forward at about 45

Condensation which occurs when a ship sails from a cool to a relatively warm climate.

A pear-shaped, grooved metal fitting around which an eye splice is made

A hand hold. Usually along the cabin top or ladder.

A type of anchor with a heavy inverted mushroom shaped head. Mushroom anchors are used to anchor in mud and other soft ground.

The original name for the left side of the vessel when facing forward. The name was changed to Port to avoid any confusion with starboard, the right side of the vessel when facing forward.

A journey made at sea by a vessel, usually including both the outbound and homebound passages.

The direct sailing line in which a racing mark or buoy can be fetched while sailing the desired course

A line used to hoist or lower a sail, flag or spar. The tightness of the halyard can affect sail shape.

Japanese tapered pipe thread (Male).