A cargo-discharging wharf.

Small staysail located between the foremast and mainmast.

A coupling device which consists of a spring loaded shutoff valve and a positive locking mechanism. It is used to connect tools, hoses and other accessories. Also known as Quick Disconnect.

A navigational aid with a light that flashes about once per second.

A wedge-shaped piece of timber used to secure barrels against movement.

The quantity of goods that may be imported without restriction during a set period of time.

An offer to sell goods at a stated price and under stated terms.

[meaning]

The operation of temporarily holding two lines together by seizing.

An arch to mount the radar, usually at the stern of the boat.

An object designed to increase the radio reflectivity of a boat so that it is more visible on radar. Many small boats are made with fiberglass and other materials that do not reflect radar very well on their own.

A compressor belonging to the group of dynamic compressors. Characterized by radial flow. (Centrifugal)

Fog over land caused by condensation of vapor in the air above cooler ground.

An instrument that uses radio waves to communicate with other vessels. VHF very high frequency - radios are common for marine use, but are limited in range. Single Side Band SSB - radios have longer ranges.

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 navigational instrument which provides a bearing to a radio beacon.

Maintains and monitors radio, sends and receives messages. Often maintains electronic navigation. Latest replaced with certified GO (Deck officer)

An officer who operates and controls the shipboard communication equipment.

Invisible waves in the electromagnetic spectrum that are used to communicate (radio) - and navigate (radar).

A bun-shaped cover placed over a radar scanner to prevent risk of fouling and to protect it from the weather.