A bulkhead, frame, or longitudinal stiffener, running fore and aft.

An extra or additional charge.

A line connecting points of equal magnetic variation on a map.

Originally meant "to stow cargo". Now, means "to search a ship carefully and thoroughly".

When the two blocks of a tackle have been drawn as close together as possible.

The operation of rinsing out a cask to prepare it for new contents. Casks were once the primary means of carrying on board the necessary water and victuals.

Weight of the earth's atmosphere over a unit area of the earth's surface, measured with a mercury barometer at sea level. which corresponds to the pressure required to lift a column of mercury 760 mm.

A tariff imposed to discourage sale of foreign goods, subsidized to sell at low prices detrimental to local manufacturers.

The anchor is under the hawse .

Slang expression to indicate that a ship was not fitted with any mechanical aids, and that all the work of the ship had to be done with the strong arms of the crew.

Course Over Ground

The area of calm which lies inside the trade winds near the equator.

1.06 liquid U.S. quarts or 33.9 fluid ounces.

A shipwrecked sailor as compared with one who has been marooned or deliberately put ashore.

An extra charge sometimes added to steamship freight rates; justified by higher fuel costs. (Also known as Fuel Adjustment Factor or FAF.)

Navigation rules governing waters inside designated demarcation zones

1) To wear a boat is the operation of bringing a sailing vessel onto the other tack by bringing the wind around the stern, as opposed to tacking, where the wind is brought around the bow. 2) In respect to the flying of flags, a ship flies her national fla ...

A filtering unit for vented enclosures installed to prevent dirt and foreign matter from entering the enclosure.

Sailor's songs sung in the forecastle when the men of a watch were off duty. These were sung for entertainment, thus they were not shanties.

The U.S. federal body charged with enforcing acts of the U.S. Congress that affect common carriers in interstate commerce. STB replaced the Interstate Commerce Commission (ICC) in 1997.