A kind of instrument (such as a hydrometer) for measuring the amount of salt in a solution.

A unit used for conversion of seawater into freshwater by vacuum distillation based on evaporation and condensation.

It is a device or unit used to condense a gaseous substance into a liquid state through cooling.

A device in a process used to turn the liquid form of a chemical substance such as water into its gaseous form or vapor.

A typical application of the principle used to deliver cold water to a boiler against its own pressure, using its own exhaust steam replacing any mechanical pump.

This is a component that is contained by a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod.

It is a vital part of the ship's marine engine as it reuses the exhaust gases in order to increase the overall efficiency of the engine.

This is the lowermost part of a marine engine (2 and 4 strokes), which supports the engine structure and is also one of the most loaded constructional parts of the engine.

It is a kind of valve to open in order to expel of the exhaust gases from the combustion process after ignition has occurred.