Anglų skaidrės. Auxiliary machinery. The machinery on board a ship can be divided into two categories. The auxiliary machinery in machinery spaces includes pumps. The other auxiliary machinery used for cargo and deck operations includes steering gears. Generator. The generators form the heart of the electrical design. Boiler. Boilers produce steam. The common types of boilers are. Smoke tube boiler. The capacity of. Evaporator. Fresh water generators (evaporators) convert the sea water to fresh water.Simple single effect evaporator. The most common type makes use of the distillation process. Pumps are the biggest group of machinery on board a ship. Heat exchanger. Heat exchangers are used to transfer heat from one medium to another. Refrigeration is needed on board a cargo ship for storing of food supplies. The air-conditioning system is usually for conditioning air in the accommodation spaces. Air compressor. Air compressors are used to supply compressed air. The compressed air is used for starting engine. Separators. There are two.