A term indicating a temperature relationship between two temperatures or temperature variation between two points.

Specially designed for the transport of condensed (liquefied) gases. The most important gases are: ammonia, ethylene, LNG (Liquefied Natural Gas), which consists mainly of methane, and is cooled to a temperature of minus 163 degrees Celcius, and LPG (Liqu ...

A small wooden, metal or plastic insertion at the head of a mainsail.

A line on the compass aligned with the centerline of the vessel that indicates the vessel's compass heading. Since it points to the vessel's bow, it enables a course to be steered by bringing the lubber's line to the point on the compass card which indica ...

A document prepared by the captain of a vessel on arriving at port; shows conditions encountered during voyage, generally for the purpose of relieving ship owner of any loss to cargo and shifting responsibility for reimbursement to the insurance company.

A lubricating oil made with synthetic base stocks.

Enormous sea monster supposed to have been seen off coasts of America and Norway. Sometimes mistaken for an island.

A rope used for securing any movable object in place

A wooden bar which may be shipped in the capstan head for heaving around by hand (to heave up anchor or heavy objects by manpower).

A large foresail or jib that overlaps the mainsail. Also known as a genny. Can be expressed in percentages of overlap, e.g. 150 Genoa is 50% overlap of the mainsail.

Bulk Carrier or Motorcar Carrier

The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.

In sailing, to be lifted by a wind shift that allows your boat to be lifted closer to the wind where by it allows you to sail a shorter distance to the next mark, buoy or finish line

Is one which 1) handles a small constant flow of liquid with the gas; 2) utilizes evaporative (injection) cooling; or 3) circulates a liquid for sealing and/or cooling. The last may or may not be evaporative cooling.

A depth measuring device.

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.

A support fixed on the front part of a chassis (which is retractable); used to support the front end of a chassis when the tractor has been removed.

An electrical depth sounder or fish finder that uses sound echoes to locate the depth of objects in water. It does so by timing the sound pulses.

A fabric bag through which a gas stream is passed for the removal of particulate matter.

Cargo thrown overboard in order to lighten the ship and washed ashore.