While the difference between ship and boat is understood to all, there are still a few who sometimes get confused between the Boat Vs Ship. Technically, there is a thin line amongst them and this sometimes leads to major misunderstanding. The first thing that comes to one’s mind when talkin

What is a fathom ? A Fathom is a measurements unit of length in the imperial and us customary system. 1 Fathom is equals to 6 feet and 1.8288 metres. 1 fathom = 6Feet or 1.8288 metres. It is used mainly for measuring the depth of water. Or It is an old english measure of length now which

What is surge limit of turbocharger ? Surge limit of turbocharger is a maximum point on line connecting all the pressure ratio or surge points for all the possible RPMs of Turbocharger. Must read :- Turbocharging and scavenging See the given figure below for more clarification. As we know that

Pv valve and pv breaker have different functions.Let us Understand Difference between pv valve and over breaker from different points. What is pressure vacuum (PV Valve ) and pressure vacuum (PV ) Breaker ? PV Valve can be simply defined as a device used to maintain the pressure and vacuum in the

Whenever,we talk about the pressure in the process industries we come across two types of safety equipments and that is pressure safety valves and pressure relief valves. Psv and prv are widely used terminology in the industry.Such terms are often used interchangely because people think that both a

Lifeboat Safeties 1.Flash Point of oil used should not be less than 45 degree Celsius. 2.Limit Switch 3.Deadman Handle 4.Emergency filler 5.Centrifugal brake 6.Two Starting mode 7.Internal light 8.Drain Plug What are the safeties on lifeboat ? These are Safety on Davit: a.Harbor pin b.

Difference between Water Tube Boiler and Fire Tube Boiler In today’s article we are going to learn about the difference between water tube boiler and fire tube boiler or in simple words Fire Tube Boiler Vs Water Tube Boiler.  We know that boiler is used onboard for power generation and it is

Bulwark on a ship What is a Bulwark on a ship ? Bulwark Definition Bulwark on a ship is a nautical term for a ship’s side to be extended above the level of a weather deck. Define Bulwark It is a Vertical Fore-and-aft plating just above the upper edge of the side of the ship surrounding the

Top 10 Largest Container Ship in the World This article contains the updated list of 10 Largest Container Ship In the World. The shipping Industry is  leading the edge of international Trade and Global trade as well. As per the International Chamber of Shipping, the number of merchant shipping ves

What is Piston ? A Piston is an important part of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar devices. It is components of the combustion chamber of a marine diesel engine that converts the exhaust gas forces into m

Good chemical stability :-Lube oil should not chemically react with refrigerant used or material.Good thermal stability :-In the compressor , lube oil used should not form hard carbon deposits or hotspots.Low Viscosity :-lube oil viscosity should be low to maintain the good lubrication properties a

The refrigerant charging in Refrigeration system or AC system is done because refrigeration effect in it cause decrease in refrigerant due to leakage of gas.The leak must be detected and rectified in the refrigeration system before the refrigerant is charged. Due to decrease in amount of refrigeran

The connecting rod of 4-stroke is subjected to an Iberia whip loading which occur due to the mass of piston and high speed of rotation , swinging about piston hinged point. In Two stroke engine the whip loading is less,which is due to less due to low speed of rotation of con rod. Moreover,ther

Deadband of governor is defined as it is the range of speed,only after which governor starts responding. Or Dead band of governor is the speed change that is required before the governor will take a corrective movement of throttle. In other words ,it is fluctuations of speed around the steady s

As we know that fuel oil used for combustion big diesel engine used contains some amount of sulphur.This sulphur in cylinder reacts with water while burning and form H2SO4.This H2SO4 causes Cold Corrosion,which can cause wearing of liner. To counteract Cold corrosion in the combustion chamber ,oil

In this article,I have mentioned the reason of questions why piston cooling oil goes from bottom to top and not top to bottom ? Why piston cooling oil goes from bottom to top and not top to bottom As we see that in the main engine ,piston is cooled by oil.This cooling oil goes to the piston throug

In this article,I have added why auxillary engine not loaded instantaneously ? It is advised to load the auxillary engine slowly.The reason behind it is that sudden loading cause overheating. As there is line contact between the cylinder liner and skirt which is machined to give an arc of 90 ° exte

In this article ,I have mentioned why main engine exhaust valve does not have spring ? Or why there is no spring in exhaust valve of main engine ? Spring required for exhaust valve will be large with large diameter & the coil diameter is also thick.Heavy coils will be under the effect of bendin

In this Article,I have added what are the advantages of crosshead type engine ? The advantage of crosshead type engine are following :- The Cross head type engine are able to devlop higher power at lower rotational speed of the engine than trunk type engines.It is because the space available for th

What are windlass Safety Devices ? Windlass Safety devices are :- Overload tripEmergency stopMechanical breakOver speed tripSlipping clutch for overload,for preventing any undesirable damage such as hull damage due to anchor and rope brake out.