10th class

Is your current Qualification 10std Passed? Is 10std Aggregate 40% or more? Is your english mark 40% or More? Is your present age 17.5 - 25 years? If you answered No to any Questions; As per DGS Circular 07 of 2005. You do not qualify for Joining Merchant Navy. Try selecting again with some lower Qualification for other options available. If you answered Yes to all questions Then you are Eligible for; 1. 6 months Pre-Sea course for General Purpose Rating

2-Year I.T.I

Is your current Qualification I.T.I ( 2- Years course) Passed? Is your Aggregate in final year 50% or more? Is your English mark 40% or More? (at 10th or 12th Std or in the Degree / Diploma course) Is your present age 17.5 - 25 years? If you answered No to any Questions; As per DGS Circular 07 of 2005. You do not qualify for Joining...

Ship Auxiliary Machineries  Machinery, other than the main propulsion unit, is usually called 'auxiliary' even though without some auxiliaries the main machinery would not operate for long. The items considered are air compressors, heat exchangers, distillation equipment, oil/water separators, sewage treatment plants and incinerators.   Air compressor Compressed air has many uses on board ship, ranging from diesel engine starting to the cleaning of machinery during maintenance. The air pressures of 25 bar or more are usually provided in multi-stage machines. Here the air is compressed in the first stage, cooled and compressed to a higher pressure in the next stage, and so on. The two-stage crank machine is probably the most common, and one type is shown in Figure 1.  Air is drawn in on the suction stroke through the first-stage suction valve via the silencer/filter. The suction valve closes on the piston upstroke and the air is compressed. The...

Watchkeeping and equipment Operation The 'Round the clock' operation of a ship at sea requires a rota system of attendance in the machinery space. This has developed into a system of watchkeeping that has endured until recently. The arrival of 'Unattended Machinery Spaces' (UMS) has begun to erode this traditional practice of watchkeeping. The organisation of the Engineering Department, conventional watchkeeping and UMS practices will now be outlined.  The Engineering Department   The Chief Engineer is directly responsible to the Master for the satisfactory operation of all machinery and equipment. Apart from assuming all responsibility his role is mainly that of consultant and adviser. It is not usual for the Chief Engineer to keep a watch. The Second Engineer is responsible for the practical upkeep of machinery and the manning of the engine room: he is in effect an executive officer. On some ships the Second Engineer may keep a watch. The...

Mechanics of Engineering Materials A knowledge of the properties of a material is essential to every engineer. This enables  suitable material choice for a particular application, appropriate design of the components or parts, and their protection, where necessary, from corrosion or damage. Material properties The behaviour of a metal under various conditions of loading is often described by the use of certain terms: Tensile strength. This is the main single criterion with reference to metals.  It is a measure of the material's ability to withstand the loads upon it in service. Terms such as 'stress', 'strain', 'ultimate tensile strength, 'yield stress' and 'proof stress' are all different methods of quantifying the tensile strength of the material. Ductility, This is the ability of a material to undergo permanent change in shape without rupture or loss of strength. Brittleness, A material that is liable to fracture rather than deform when absorbing energy (such...

  Fire fighting and safety Fire is a constant hazard at sea. It results in more total losses of ships than any other form of casualty. Almost all  ire’s are the result of negligence or carelessness. Combustion occurs when the gases or vapours given off by a substance are ignited: it is the gas given off that burns, not the substance. The temperature of the substance at which it gives off enough gas to continue burning is known as the 'flash point'. Fire is the result of a combination of three factors: 1. A substance that will burn. 2. An ignition source. 3. A supply of oxygen, usually from the air. These three factors are often considered as the sides of the fire triangle. Removing any one or more of these sides will break the triangle and result in the fire being put out. The complete absence of one of the three...