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Reverse Osmosis System of Fresh water generation on board Working: Osmotic pressure & briefly explain why pressure osmosis applied in RO system is very high Low-pressure evaporator. How waste heat from main engine is used for producing fresh water on board the ship? Working: Description a domestic fresh water generator used on board a ship….
Admiralty Coefficient: The admiralty coefficient may be regarded as constant for similar ships at their corresponding speeds. Fuel Coefficient Pitch of propeller Percentage apparent slip: Percentage Real Slip: Efficiency of Machine: Critical Speed of Engine (Bared Speed Range): Hunting Gear Superheated Steam: Specific fuel oil consumption and how it is determined Propeller drop & Rudder…
Open feed water system used for boilers and line diagram of a complete feed water system for an auxiliary boiler showing the direction of flow in all lines. How the feed supply to the boiler is regulated. Advantages and disadvantages of water tube boiler and Smoke tube boiler Advantages of water tube boiler: Disadvantages of…
Purpose of boiler on ships? Steam Generation: Propulsion: Power Generation: Heating: Cargo Operations: Auxiliary Machinery: How circulation of water takes place in such boiler Smoke tube aux. boiler Important mountings of a boiler stating their use. Water Gauge: Safety Valve: Main Steam Stop Valve: Auxiliary Stop Valve: Main Feed Check Valve: Blow Down Valve: Air…
Introduction The BMS-2000 Bridge Manoeuvring System is a manoeuvring system used for the remote control of the ship’s main diesel engine. The BMS-2000 allows for remote engine control from the wheelhouse or engine control room. Control may be transferred between these stations and may also be transferred to the local engine side control stand. The…
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Before Going UMS Before going UMS, the Duty Engineer must ensure that all day service tanks for fuel, cylinder oil and header tanks for cooling water, lubricating oil, etc are full. An inspection of all active and operational machinery and systems in all the machinery spaces, particularly for fuel and lubricating oil leakage, is to…
TRO CABINET IN PUMP ROOM 1) Communication Alarm : Main cause of communication alarm is low or no air pressure (3 to 4 bar)in the cabinet. Positive air pressure is to be maintained in TRO cabinet in order to maintain intrinsically safe condition in it. If the pressure falls below 3Bar the system will stop…
The initiation of a crankcase explosion is a ‘hot spot’ or overheated part within or adjacent to the crank case of an operating engine. Due to the ‘hot spot’, the lube oil coming in contact with it gets evaporated. The evaporated oil circulates to the cooler parts of the crankcase and there it condenses forming…
Scavenge fires occur when oil and carbon particles from the engine cylinder accumulates in the scavenge space. For a fire to begin there must be combustible material, air to support combustion and source of heat at a temperature high enough to start combustion. A) In case of scavenge fires, combustible material is oil. This oil…
With effect from 01 Jan 2012, under the Manila Amendments to the STCW Convention, it is the duty of an employer of a seafarer, the master and the operator who has assumed responsibility for the operation of the ship to ensure that as a minimum. all persons who are assigned duty as officer in charge…
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