Land ice, either afloat or on ground, that is composed of layers of sow that have become firm but have not turned to glacier ice.

The volume displaced by the compressing element of the first stage per unit of time.

A fan that generates (by pushing) a flow of ambient air over the exterior of the finned pipes to dissipate the sensible heat.

A container with a discharge hatch in the front wall; allows bulk commodities to be carried.

Two iron flatsided hooks reversed to one another.

A wire rope or line between davit heads.

All listed options of a particular type (i.e., call or put) on a particular underlying instrument,.

A line attached between a safety harness and a secure part of the boat.

A winch having a rope storage capacity and used for topping, lowering and supporting a boom under load and no load.

Reduces the area of the mainsail by partially lowering the sail and re-securing the new foot by tying it to the boom with points, or light lines attached to the sail. Also called points reefing and jiffy reefing.

The wheel operating the steering gear and by which the vessel is steered.

Is the speed required of a rotary compressor to maintain a given discharge pressure, supplying leakage only (zero actual output). It is an experience factor.

A disease caused by lack of Vitamin C historically common to seaman, because of the difficulty in preserving fresh fruits and vegetables.

Vapour rising like steam or smoke from the sea caused by very cold air blowing over it.

Without any means of powering, except for hand power.

In general the line, web straps, cable or chains attached to a heavy object to lift it.

In a wooden vessel, a plank in the hull springs when one of its ends breaks loose, and because of its shape bent to the curve of the hull, springs outwards beyond that curve. Such a plank is said to be sprung.

A prime mover which is suitable for operating the deck machinery at its full designed load.

The operation of securing the ratlines to the shrouds.

What is NDT ? The field of Nondestructive Testing (NDT) is a very broad,interdisciplinary field that plays a critical role in assuring that structural components and systems perform their function in are liable and cost effective fashion. NDT technicians ...