The maximum power required by a given compressor when operating at a (1) constant discharge pressure with variable intake pressure, or (2) constant intake pressure with variable discharge pressure.

An order to hold a vessel on the course she is heading.

Loss of effective propeller thrust caused by the blades cutting across the column of water sucked along by the propeller instead of working in it. Can also lead to heavy vibration of the vessel.

Wooden shoulders attached below the masthead to either side of a wooden mast which originally supported the trestle trees.

A compartment on or near the bridge of a ship that contains the steering wheel and other controls, compass, charts, navigating equipment and means of communicating with the engine room and other parts of the ship. Also known as wheelhouse

A single masted cutter built expressly for the prevention of smuggling and the enforcement of customs regulations.

Depending upon as a condition

all material and energy present in and around an operating system, such as dust, air moisture, chemicals, and thermal energy.

Accumulation of foreign matter, such as mud or debris, in a cooler, pipe, or valve. In a cooler, H 2 O D P and D T will be seen to increase, as well as CTD.

Estimated account

Removal of a shipment from a vessel.

Sudden and rapid flow of tide in certain rivers and estuaries which rolls up in the form of a wave. also known as Eagre.

Said of a boat which turns end over end in very rough seas.

An order to make haste.

2,000 pounds.

The borrowing of money by the master using his ship as security.

A piece of wood fitted in various places to act as a preventative to chafe.

A schooner with a square rigged sail on the forward mast.

Machines in which air or gas is compressed from initial pressure to an intermediate pressure in one or more cylinders or casings.

A harbor restriction placed on a ship which has an infectious disease on board, or which has arrived from a country where such a disease is prevalent. The crew may not go ashore until the ship is granted pratique.