Main engine and auxiliary engine are the two prime components in a ship’s engine room, on which, the entire operation of the vessel is dependent. There are several other important machineries that are necessary to support these two main components; however, one equipment without which any of the above mentioned machines cannot do away with […]
As the fuel prices go sky high, ships are using lower grades of fuel for saving its operational cost. The fuel used for burning in auxiliary engine and main propulsion plant is normally heavy fuel oil. Along with other properties, viscosity is an important property which determines the efficiency of fuel combustion and of the […]
When a ship is being constructed in a shipyard, the most important machinery that is to be selected is the main propulsion machinery. Both 2 stroke and 4 stroke engines are widely available in the market but for large ocean going merchant vessel, a 2 stroke engine is more commonly used as main engine and […]
Every ship is installed with fresh water production unit which produces fresh water from sea water. The efficient water production unit of the ship helps the vessel owner to save on additional fresh water expenses that are incurred by purchasing water from port suppliers. Two popular methods for production of fresh water on ships include: […]
Like every other machinery, the turbine generator of the ship also needs to start under sequential starting procedure to avoid trouble free operation of the whole system. The correct procedure ensures that no part of the machinery goes through any kind of stress- thermal or mechanical. It also helps the ship to operate without wasting […]
Different safety devices like HP & LP switch,relief & solenoid valve,oil differential pressure switch etc are fitted to safeguard refrigeration plant on ship.
The refrigeration plants on merchant vessels play a vital part in carrying refrigerated cargo and provisions for the crew on board. In reefer ships, the temperature of the perishable or temperature sensitive cargo such as food, chemical, or liquefied gas, is controlled by the refrigeration plant of the ship. The same plant or a smaller […]
A major quality concern with regard to refrigerants is their purity. The moisture content in the refrigerant is of great importance since too much moisture can cause serious operational problems. Water can enter a system through sub-quality refrigerants during top-up.
Turbine generator is a popular source of clean power generation on ships as they don’t use any type of fuel i.e. heavy or diesel oil. Steam is used for power production in case of turbine generators. Steam is an easy, environmental friendly and cheap form of fuel on ships. For turbine generators, the steam comes […]
The propeller of the ship is fitted at the aft and attached to a crankshaft coming from the main engine. This is done so that the rotating motion of the Main Engine can be converted into thrust to propel the ship. The propeller shaft or tail shaft is supported by a bearing arrangement which acts […]
It is a known fact that there are certain types of bacteria which flourish in the air conditioning system of a ship. These organisms or bacteria flourish or increase in number in stagnant water or in wet deposits of slime or sludge. If these bacteria multiply exponentially and are not removed then they spoil the […]
The machineries fitted on board ships are designed to work with maximum efficiency and run for long running hours. The most common and maximum energy loss from machineries is in the form of heat energy. This loss of heat energy has to be reduced or carried away by a cooling media to avoid malfunctioning or […]
Refrigerated shipping such as reefer ships or refrigerated carrier helps in transporting refrigerated cargo to its destination without any loss or decay.
Alfa Laval Marine and Diesel recently launched a newer version of one of its flagship marine products- the S-separator. Comprising of newer enhancements that the company claims not only improves overall robustness but also proves to be fuel-efficient and energy friendly alternative to other separators, the Alfa Laval separator permits a smoother run that helps […]
A ship consists of various types of fluids moving inside different machinery and systems for the purpose of cooling, heating, lubrication, and as fuels. These liquids are circulated by different types of pumps, which can be independently driven by ship power supply or attached to the machinery itself. All the systems on board ship require […]
On ship, it is important to check the performance of the engine from time to time so as to ascertain working condition and fault finding. In earlier days, the performance of diesel engine was taken manually, but with the advancement of technology, automatic monitoring systems are being used.