A fore-and-aft rigged sailboat with two or more masts. The aft mast is the same size or larger than the forward ones.

Technically, the ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water. Usually six to seven to one for calm weather and more scope in storm conditions.

The ratio of the length of an anchor line, from a vessel's bow to the anchor, to the depth of the water.

A groove in a block or dead-eye.

A boat with a flat bottom and square ends.

Is a positive displacement rotary compressor.

A sailor's carving or etching on bones, teeth, tusks or shells.

Self Contained underwater Breathing Apparatus - see Aqualung.

To drive before a gale, with no sail, or only enough to keep the vessel ahead of the sea. Also, low, thin clouds that fly swiftly before the wind.

To run before a gale with reduced sail or bare poles. This could be dangerous, with the possibility of being pooped.

A short oar. To scull, is to impel a boat by one oar at the stern.

Moving the rudder, or a single oar over the stern, back and forth in an attempt to move the boat forward

An opening in a deck, cockpit, toe-rail or gunwale to allow water to run off the deck and drain back into the sea.

Holes cut in the water-ways for the water to run from the decks.

Openings in the side of a ship to carry off water from the waterways or from the drains.

A disease caused by lack of Vitamin C historically common to seaman, because of the difficulty in preserving fresh fruits and vegetables.

A hole cut in a vessel's deck, as, a hatchway. Also, a hole cut in any part of a vessel. To scuttle, is to cut or bore holes in a vessel to make her sink.

(1) To deliberately sink a ship. (2) A small hatch; a round window in the side or deck of a boat that may be opened to admit light and air, and closed tightly when required.

To sink a vessel by boring holes in her bottom or by opening sea valves.

The container of fresh water for drinking purpose used by the crew; formerly it consisted of a cask.