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

A device that tracks the movement of the sun; used to orient solar concentrating systems.

(1) A metal whose potential is highly positive relative to the hydrogen electrode. (2) A metal with marked resistance to chemical reaction, particularly to oxidation and to evolution by inorganic acids. The term as often used is synonymous with precious m ...

Gross Observed Volume

The simultaneous purchase (sale) of a call at one exercise price and sale (purchase) of another call.

(1) To adjust the sails for best advantage. (2) Fore and aft balance of a boat. If either the bow or stern is depressed, the vessel is said to be down by the bow or down by the stern. (3) To trim is to adjust. It does not just apply to sheets. You can tri ...

A machine employing two or more stages.

Circular iron band used to hold a bowsprit on the stem of a sailing vessel.

A bulkhead that will not let water pass from one side of it to the other.

(1) To throw, as to heave a line ashore. (2) An upward pull on a line; to lift (3) The rise and fall of a vessel in a seaway.

A ton on which the shipment is freighted. If cargo is rated as weight or measure (W/M), whichever produces the highest revenue will be considered the revenue ton. Weights are based on metric tons and measures are based on cubic meters. RT=1 MT or 1 CBM.

The part of a rotating element that counteracts any inherent thrust developed by the impellers.

A point (or line) on a scale used for reference or comparison purposes. In calibration of meteorological thermometers, for example, the fiducial points are 100

A tiller or a wheel generally installed on the bridge or wheelhouse of a ship to turn the rudder during manoeuvering and navigation. It is in fact the steering wheel of the ship.

The positive direction of electrode potential, thus resembling noble metals such as gold and platinum.

A list of metals and alloys arranged according to their relative corrosion potentials in a given environment. Compare with electromotive series.

Plating wherein fine metal powders are peened onto the work by tumbling or other means.

Emergency Position Indicating Radio Beacon. Small buoyant transmitter which should always remain afloat if the ship sinks, and send automatically a distress message via satellites.

The test or specimen electrode in an electrochemical cell.

When reaching retirement age, a person can elect to defer payment of his/her state pension. The.