Incapable of being mixed without separation phases. Water and petroleum oil are immiscible under most conditions, although they can be made miscible with the addition of an emulsifier.

(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 ...

Is used in psychrometry and is the temperature recorded by a thermometer whose bulb has been covered with a wetted wick and whirled on a sling psychrometer. Taken with the dry bulb, it permits determination of relative humidity of the atmosphere.

(1) Said of ship's head when it moves away from wind, especially when tacking. (2) To discharge a crew and close Articles of Agreement of a merchant ship.

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.

An instrument that, once established, cannot be modified or cancelled without the agreement of all parties concerned.

The operation of taking a sounding with the hand lead (to find bottom).

Said of a lighthouse not tended.

A salt or ester of carbonic acid.

A line led to a sail, but is not currently in use. The line currently in use is known as the working sheet. Usually the working and lazy sheets change when the boat is tacked.

A life-threatening condition where there is loss of body heat; the greatest danger for anyone in the water. As the body loses its heat, body functions slow down, and this can quickly lead to death.

U.S. Customs' automated program under AMS. It allows for electronic reporting of inbound (foreign) cargoes in the U.S.

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.

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

Permanent pip iron ballast specially shaped and placed along each side of keelson. Name is sometimes given to any iron ballast.

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

A law of chemistry and physics: the rate of diffusion of one substance in another is proportional to the negative gradient of the concentration of the first substance.

Direct current. A continuous, one directional flow of electricity

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

Bulk Carrier or Motorcar Carrier