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STAY BOLTS TIGHTENING
REMOVE THE PROTECTIVE CAP OF THE STAY BOLTS. CHECK THE LOOSE STAY BOLT NUT BY THE HELP OF THE TOMMY BAR. IF LOOSE NUT IS FOUND THEN UNSCREW THE NUT […]
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LIFEBOAT DAVIT MAINTAINANCE
Following maintainance should be done on lifeboat davit : 1. Frame :- Check corrosion , deformation and depression weekly and monthly. 2. Davit Arms :- Check corrosion, deformation and depression […]
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CARGO PUMP ROOM SAFETY
Ventilation system :- cargo pump-rooms should be mechanically ventilated and the capacity should be 20 air changes per hour of the total volume of the pump-room. the position of the […]
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EXPANSION ACCOMODATION IN 7 KG BOILERS
The alignment of boiler should incorporate provisions for thermal expansion at the boiler feet (saddles) when the boiler is in hot operating condition. Expansion may be in the order of […]
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AXIAL FLOW PUMP
IT IS A PUMP IN WHICH A SCREW PROPELLER IS USED TO CREATE AN INCREASE IN PRESSURE BY CAUSING AN AXIAL ACCELERATION OF LIQUID WITHIN ITS BLADE. THE INCIDENTAL ROTATION […]
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SURGING AND ITS CAUSES
TURBOCHARGER IS ONE OF THE MOST IMPORTANT COMPONENT OF THE MORDERN ENGINE AND HELPS IN CREATING MORE POWER AND INCREASING THE EFFICIENCY OF THE ENGINE. IT INCREASES THE MASS FLOW […]
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SYNCHRONOUS ROLLING OF SHIP
SYNCHRONOUS ROLLING IS CAUSED BY THE SHIP’S ROLLING PERIOD T(r) BECOMING SYNCHRONOUS OR RESONANT WITH THE WAVE PERIOD. WHEN THIS OCCUR, THE SHIP WILL HEEL OVER AND , IN EXCEPTIONAL […]
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OVERHAULING OF CYLINDER HEAD
CYLINDER HEAD OVERHAULING IS THE MOST BASIC OVERHAULING THAT IS CARRIED OUT ONBOARD. WHEN CYLINDER HEAD IS TAKEN OUT FROM THE AUXILIARY ENGINE IT IS TAKEN TO THE WORKSHOP. FOLLOWING […]
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PRINCIPLE OF GRAVITY DISC
A PURIFIER MAKES USE OF THE SPECIFIC GRAVITY DIFFERENCE BETWEEN MIXED LIQUIDS. BUT IT IS IMPOSSIBLE TO CHANGE THE POSITION OF INTERFACE OF LIGHT AND HEAVY LIQUID DUE TO ITS […]
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TYPES OF VESSELS
VESSELS ARE CLASSIFIED INTO 2 TYPES :- TYPE “A” VESSELS :- A SHIP THAT IS DESIGNED TO CARRY ONLY LIQUID CARGOES IN BULK AND IN WHICH CARGO TANKS HAVE ONLY […]
