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

To enter a port or harbor

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

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 joint Bureau of the Census' International Trade Administration form used for compiling U.S. exports. It is completed by a shipper and shows the value, weight, destination, etc., of export shipments as well as Schedule B commodity code.

A port that is not directly listed in the tide tables but for which information is available as a difference from a nearby standard port.

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 ratio of the actual water-vapor partial pressure to its saturation pressure at the same temperature. (considered only with atmospheric air).

Is one that does not enter into known chemical combination, either with itself or another element. There are four known gases of this type: helium; neon; argon and krypton. or a gas that does not supply any of the needs of combustion.

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

The warehouse or public stores to which samples of imported goods are taken to be inspected, analyzed, weighed, etc. by examiners or appraisers.

A method of payment for goods in which the buyer pays the seller in advance of the shipment of goods. Usually employed when the goods, such as specialized machinery, are built to order.

Differences between the compass reading and an actual magnetic direction caused by magnetic forces in the vicinity of the compass, which are usually the result of masses of metal, speaker magnets, etc. (2) Vessel departure from specified voyage course.

The extreme deck fore and aft measurement of a vessel.

Speed Over Ground, speed relative to bottom.

A disturbance of surface water by conflicting current or by winds.

A shortening of the term, "Roll On/Roll Off." A method of ocean cargo service using a vessel with ramps which allows wheeled vehicles to be loaded and discharged without cranes.

Wide, a wide boat is a beamy boat

Old name for bunting from which signal and other flags were made.