International Maritime Consultative Organization. A forum in which most major maritime nations participate and through which recommendations for the carriage of dangerous goods, bulk commodities, and maritime regulations become internationally acceptable.

To keep the sails full and drawing

A navigational light which turns on and off in a regular pattern, but is on more than it is off, so the period of light is longer than the period of darkness.

The motion of a vessel when she goes off from her course.

The national flag flown on a jackstaff on the bow of naval ships while anchored.

[meaning]

Liquid flows through into the valve and flows out through one of two tubes which is selected by changing the angle of a lever.

Erosion rate per unit of erosion index in a cultivated continuous fallow soil.

A large piece of fabric designed to be hoisted on the spars of a sailboat in such a manner as to catch the wind and propel the boat.

[meaning]

Measuring point for compressor acceptance test. Temperature at the compressor inlet flange.

A spar from which a square sail is hung. A long spar, tapered at the ends, attached at its middle to a mast and running athwartships at right angles to the mast; used to support the top of a square sail. The yard can pivot (be braced) around the mast. At ...

A drive arrangement for power transmission to compressors.

A small freshwater mollusk that was accidentally introduced to North American waters via ballast water from a transoceanic vessel. The zebra mussel has had significant negative economic and ecological effects: It clogs water intake pipes and attaches to a ...

Prefix before a ship's name to indicate that she is a steamship.

The Quebec pennant is flown when first entering a country, indicating that the people on the ship are healthy and that the vessel wants permission to visit the country. The flag means "My vessel is healthy and I request free pratique.

[meaning]

A device worn around a person's body that can be tethered to jack lines to help prevent a person from falling overboard.

Used by some seamen to describe St. Elmo's Fire.

A small flag placed at the mast head to show wind direction.