A type of photoelectric photometer used to measure high-altitude winds on the assumption that stellar scintillation is caused by atmospheric inhomogeneities being carried along by wind near the tropopause level.

Stern To Manifold (Distance)

Subsidies and Countervailing Measures.

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

A boat with a flat bottom and square ends.

Is a positive displacement rotary compressor.

The cutting of a grid pattern of grooves in a semiconductor material, generally for the purpose of making interconnections.

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

Croatian Register of Shipping (Class Society)

Self Contained underwater Breathing Apparatus - see Aqualung.

Ragged low clouds, usually stratus fractus. Most often applied when such clouds are moving rapidly beneath a layer of nimbostratus.

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.

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.

(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.