A region near the earth in which the relative velocity increases from zero with elevation, due to the motion of the atmosphere relative to the earth's surface.

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.

Various means for allowing LNG tanks to expand and contract due to temperature changes by sliding on the tank supports while restricting its movement due to the motion of the vessel.

A navigational instrument used to measure the altitude of celestial bodies

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

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.

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.

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

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 ...

(1) Sailing away from the wind with the sails let out all the way; going with the wind, downwind sailing (2) To allow a line to feed freely. (3) The shape of the afterpart of the underbody of a ship in relation to the resistance it creates going through t ...

An extra or additional charge.

In the direction the wind is blowing. A boat sailing downwind, away from the wind source with the sails let out all the way, is running with the wind.

To loose a rope is to let it go

A transportation line that hauls export or import traffic between ports and inland points.

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.

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

Course Over Ground

To search for a sunken object by towing a grapnel along bottom.

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

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