Main propulsion services and heat exchangers -- Machinery service systems and equipment -- Ship service systems -- Valves and pipelines -- Pumps and pumping -- Tanker and gas carrier cargo pumps and systems -- Auxiliary power -- The propeller shaft -- Steering gears -- Bow thrusters, stabilizers and stabilizing systems -- Refrigeration -- Heating, ventilation and air conditioning -- Deck machinery and cargo equipment -- Fire protection -- Safety and safety equipment -- Control and instrumentation.