Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air.

Coking is the heating of coal in the absence of oxygen to a temperature above 600 °C to drive off the volatile components of the raw coal, leaving a hard, strong, porous material of high carbon content called coke.

Cold filter plugging point is the lowest temperature, expressed in degrees Celsius (°C), at which a given volume of diesel type of fuel still passes through a standardized filtration device in a specified time when cooled under certain conditions.

Connecting ships to the onshore power supply and shutt down the gensets in order to decrease exhaust emissions and noise.

A cold shield is a device to protect an object from unwanted heating by thermal radiation or light.

The preserving of perishable foodstuffs by storage in a refrigerated space at an appropriate temperature.

Any work which cannot create a source of ignition.

Cold forming or cold working is any metalworking process in which metal is shaped below its recrystallization temperature, usually at the ambient temperature.

A mast hinged near the deck so it can to lie horizontally.

A welded plate used to, partly or completely, close a hole cut for a longitudinal stiffener passing through a transverse web.

In distributed generation projects such as a wind farm or photovoltaic power station, a collector substation may be required.

The act of ships striking each other.

Damage caused by physical contact between two or more ships.

The Convention on International Regulations for Preventing Collision at Sea adopted in 1972 by IMO.

A general term applied to ships intended for carriage of both oil and dry cargoes in bulk. These cargoes are not carried simultaneously, except for oil retained in slop tanks.

A heat pump system that has the ability to heat or cool air at full capacity or to heat or cool water at full capacity, but not both at the same time.

Combined cycle gas turbine plants have two or more cycles, the first of which is very similar to a peaking plant, with the second running on the waste heat of the first.

The use of two different power generation processes, e.g fuel engines and steam turbines, in the same power plant. The second process utilizes the heat recovered from the first.

A novel propulsion and machinery concept developed by Wärtsilä Corporation. The concept features a diesel-mechanical part driving a conventional propeller and a diesel-electric power plant powering one or more electric pods.

A hybrid machinery system with a gas turbine and diesel engines driving generators to create electric power for both propulsion and the hotel side.