Sea WordsRSS

Sea Words

The distance between the water level at chart datum and an overhead obstacle such as a bridge or power line.

A general term for a floating craft that carries passengers, cargo or both

The international carrier is obligated to make declarations of the ship's crew and contents at both the port of departure and arrival. The vessel manifest lists various details about each shipment by B/L number. Obviously, the B/L serves as the core sourc ...

Allows equipment and supplies arriving at one port to be loaded on a vessel, aircraft, etc., for its exclusive use and to be exported from the same port.

An electronic communications or direction finding system which uses Very High Frequency radio waves. VHF radios are the most common communications radio carried on boats, but their range is usually limited to line of sight between the transmitting and rec ...

A naval rank next below that of admiral.

Uncharted navigational danger that has been reported but has not been verified by survey.

Is a measure of resistance to deformation, or reluctance to be squeezed out a bearing. Indicates the internal friction of a fluid. Viscosity in normal lubricants is reduced as temperature increases

Is a measure of the rate of change of viscosity with temperature. Oils with high VI have low viscosity changes.

A fix taken by visually observing the location of known landmarks.

Namely. Used in tariffs to specify commodities.

The ratio and percent of the actual delivered capacity (measured at inlet temperature, pressure and gas composition) to the piston displacement.

A stationary, spirally shaped passage that converts velocity head to pressure.

(Compressors/Gas Turbines) Is an alarm system that has maybe 3 sensors connected to it and it will require minimum of 2 of the 3 to alarm before the alarm will act. There is a controller connected that does the logic decision based on set parameters.

A journey made at sea by a vessel, usually including both the outbound and homebound passages.


Abbreviation for "Weight or Measurement;" the basis for assessing freight charges. Also known as "worm." The rate charged under W/M will be whichever produces the highest revenue between the weight of the shipment and the measure of the shipment. ...

Western Truck Lines.

The portion of the deck between the forecastle and quarterdeck of a sailing vessel.

An old term to describe an untrained or incompetent seaman, or one who was worn out after many years of work.