Marine machinery

Marine machinery

All machinery installed on waterborne craft, including engines, transmissions, shafting, propulsors, generators, motors, pumps, compressors, blowers, eductors, centrifuges, boilers and other heat exchangers, winches, cranes, steering gear, and associated piping, tanks, wiring, and controls, used for propulsion, for ship services, and for cargo, trade, or mission services.

Practically all marine machinery elements have nonmarine counterparts; in some cases, the latter were developed from marine applications, while in other cases specific equipment was “marinized.” For marine service, machinery may have to meet higher standards of reliability and greater demands for weight and volume reduction and access for maintenance. Marine machinery must be capable of withstanding the marine environment, which tends toward extreme ambient conditions, high humidity, sea-water corrosion, vibration, sea motions, shock, variable demand, and fluctuating support services. Even higher standards may apply for warship machinery. To improve system reliability, essential equipment may be fitted in duplicate or provided with duplicated or alternative support or control systems, while nonessential equipment may be fitted with bypasses, to permit continued operation of a system following a component failure. Isolation valves or circuit breakers are common, enabling immediate repair.

Machinery on modern ships is highly automated, with propulsion usually directly controlled from the wheelhouse, and auxiliary machinery centrally controlled from an air-conditioned, sound-proofed control room, usually in the engine room. In the typical modern merchant ship (but not in passenger ships), the machinery operates automatically, and the controls are unattended at sea, with engineers called out by alarm in the event of malfunctions.

Propulsion machinery comprises an engine, usually a diesel engine, steam turbine, or gas turbine, with required gearing or other transmission system, and, for steam plants, steam generators. See Marine engine, Propeller (marine craft)

References in periodicals archive ?
Japan s Akasaka Diesels Limited has placed four new orders for six UEC33LSE-C2 Mitsubishi Heavy Industries Marine Machinery & Engine Co, Ltd (MHI-MME) low speed diesel engines.
Bridge has facilities for melting metal and resizing it into required shapes as well as for automotive engineering relating to repairing land and marine machinery and overhauling old engines.
Mitsubishi Heavy Industries Marine Machinery & Engine Co (MHI-MME), a group company of Mitsubishi Heavy Industries, has signed a licensing agreement with Changzhou Zhonghai Marine Propeller Co.
MHI possesses the comprehensive capabilities in ships and major marine machinery to respond to the heightening demands being made of today's LPG carriers.
On Tuesday, Krishnan, along with Keiichi Shiraishi, Senior Business Development Manager for Mitsubishi Heavy Industries Marine Machinery and Engine Company, will discuss the development of the companies' Electric-Assist Turbo for Marine Turbocharged Diesel Engines, which consists of a specially designed high-speed permanent magnet motor directly mounted to the turbocharger rotating assembly to improve engine performance and reduce electric power consumption at low load.
99 billion yen on good sales of industrial engines, aerospace equipment as well as marine machinery.
Tokyo, May 27, 2014 - (JCN Newswire) - The first order for UEC50LSH-Eco low-speed marine diesel engine being developed by Mitsubishi Heavy Industries Marine Machinery & Engine Co.
Mitsubishi Heavy Industries Ltd is one of the world's leading shipbuilders and also a major supplier of a wide-range marine machinery such as diesel engines, turbines, boilers, propellers, deck machinery etc.
Since 1981, BLM has been jointly manufacturing marine equipment, including deck cranes, mooring winches, and windlasses for cargo and container vessels, with Wuhan Marine Machinery Plant (WMMP), located in Hubei Province, China.
TTS Group ASA, through its subsidiary TTS NFM GmbH in Hamburg, Germany has signed into an agreement with South China Marine Machinery, controlled by China State Shipbuilding Corporation (CSSC), to establish a new joint venture company.

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