A motor controller that regulates the air flow through an end plate into the motor to control the speed and power. A speed regulation device built into or attached externally.

Abbreviation for "Trailer on Flat Car." The movement of a highway trailer on a railroad flatcar. Also known as Piggyback.

The direction and speed of the wind as it appears to those on board, relative to the speed and direction of the boat; combination of the true wind and the wind caused by the boat's movement through the water.

Hauled out of the water for repairs or storage

An illegal form of discounting or refunding that has the net effect of lowering the tariff price. See also Malpractice.

Cubic feet per minute. An airflow measurement of volume.

An important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.

A cylinder used to carry rotating machine parts, such as pulleys and gears, to transmit power or motion; such as a propeller shaft.

The volume of a substance passing a point per unit time (e.g., meters per second, gallons per hour, etc.).

States that equal volumes of all gases under the same conditions of pressure and temperature contain the same number of molecules.

The alternating motion of a boat, leaning alternately to port and starboard; the motion of a boat about its fore-and-aft axis.

Freight on which transportation charges are calculated on the basis of volume measurement.

A navigational aid that emits radio waves for navigational purposes. The radio beacon's position is known and the direction of the radio beacon can be determined by using a radio direction finder.

A dinghy or raft that can be inflated for use or deflated for easy stowage.

A fitting around the propeller shaft to keep the bearing lubricated and to keep water out of the boat.

The amount of money an ocean carrier pays to the railroad for overland carriage.

In navigation, the smaller angle at which two position lines on a chart intersect. The fix will be more reliable as the angle approaches 90

To let go.

(1) The underside of the hull that sits in the water (2) The ocean floor

American Standards Committee X12 responsible for developing EDI standards for the United States.