A ceremony performed on board ships when passengers or crew are crossing the equator for the first time during a voyage.

The use of a sound barrier separating the sound from the receiver.

The direction and speed of the wind as it appears to those on board, relative to the speed and direction of the boat; combination of the true wind and the wind caused by the boat's movement through the water.

(1) When two or more boats tie up alongside each other. (2) Overlapping of edges of two ice-floes, so that one floe is partly supported by the other.

Disciplinary code in which maritime crimes and punishments are specified.

Screen of cloth or other material to give the crew protection against the weather, wind and water spray.

Reduce dew point by passing compressed air through a bundle of hollow membrane fibers; water vapor and a portion of the compressed air then permeate the membrane walls and vent to atmosphere

A contract for leasing between the ship owners and the lessee. It would state, e.g., the duration of the lease in years or voyages.

States that equal volumes of all gases under the same conditions of pressure and temperature contain the same number of molecules.

Steel wire, used to support over-the-side sampling apparatus

Deck supported by pillars, fastened to pontoons. The pontoons are half submerged during operations. Kept in position by anchors (or by dynamic positioning). Normally equipped with its own propulsion machinery.

Amount of time for a compressor to complete one cycle.

Wide, a wide boat is a beamy boat

Heavy weight,which gives a ship stability when the vessel is not carrying cargo.

A negatively charged ion.

An important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.

The amount of work done on or by a system is equal to the amount of energy transferred to or from the system.

Forward. The opposite of abaft.

(1) The edge where the deck joins the hull; top edge of bulwarks. (2) The railing around the deck.

A dinghy or raft that can be inflated for use or deflated for easy stowage.