Any machine that grinds by the action of a rotating disc.
Any release from a ship including any escape, disposal, spilling, leaking, pumping, emitting or emptying.
An essential document for officers and seamen as it serves an official certificate confirming their sea experience...
Any piping leading through the ship sides for conveying bilge water, cooling water, drains, etc.
An interrption of the typical structure of a material, such as lack of homogeneity in its mechanicall, metallurgical...
The purpose of this system is to send a covert signal from a ship which will be not obvious to anyone on the ship...
Refers to any time that the crew leave the ship, be it a port call or final destination.
It is the weight of water displaced by this vessel at any waterline. It is the product of the volume of its underwater...
A curve showing the displacement of a vessel in fresh or salt water at any draft.
A pump operating by the reduction or increase in volume of a space by mechanical action which physically moves...
A craft that is supported by the buoyancy of the water it displaces.
Water added to the separator bowl to displace the oil and to ensure there is no loss of oil at sludge discharge.
Means by which a device presents visual information to the navigator, including conventional instrumentation.
Any gas present in water. It may be released when boiled.
Any impurities existing in pure water either produced by an evaporator or used as boiler feed water.
1. Product of condensation of freshwater vapour. 2. Any product obtained by distilling petroleum and condensing...
The production of pure water from seawater by evaporation and re-condensing. The main purpose of distillation is...
The effects of welding on a metal plate. It may appear as shrinkage or an angular twisting. Distortion of steel...
A term used when a ship requires immediate assistance.
A radio signal from a distressed automatically directed to a RCC giving position, identification, course and speed...