Marine Engineering

Design and system wise absolutely no difference. Only the

license manfacturer is different. mitsui and Hitachi

kawasaki Diawoo are the different license holders for Man

B&W for making the engines

by the arrangement of the valves ...in two stroke exhaust

valve is situated at the top(i.e cylinder head) and there

are scavenge ports at the bottom in modern diesel

engine...whereas in four stoke the exhaust and inlet is

situated at the cylinder head.

The 440v generated by the generator can be taken to the MSB

via busbars. associated with preferential trips, overload

protections

O-ring : to prevent leakage between metal parts while

allowing some movement between them

wear ring : generally a softer material than the parent

material , employed to wear out quickly than the parent

metal thereby avoiding loss of parent metal

Gate valve is non regulator means full close or full open

positions only, while globe valve is regulator.

As centrifugal pump is not a self priming pump,separate

priming arrangement is required...

generally,a separate axial pump is provided for this

purpose.The discharge v/v of the centrifugal pump is

closed,and the inlet v/v is opened.The discharge v/v is

opened only after the pump is primed,that is filled with the

liquid to be pumped.

cubic/centimeter

GAS TURBINE IS AN ECONOMIZER WHICH CALLED A GAS BOILER THAT THE MAIN PURPOSE IS TO HEATED THE STEAM FROM THE EXHAUST GAS MANIFOLD THEN SUPPLY TO THE BOILER.

Bcoz in case pressure rises above the desired level CO2 has to be realesed in CO2 room .The cause for rise in CO2 pressure may be FIRE in CO 2 room

there are 12 major ports and 181 minor port in india

anti corrosion agents

In transformer case Core occurs iron loss (Eddy Current & Hysteresis Loss) Or No Load Loss in Electric Transformer.

Ships are divided into various types depending on their

nature of service.

1. Cargo Ships (Bulk carriers, general cargo carriers,

container vessels, oil tankers, chemical tankers, Product

tankers, gas carriers, Ro-Ro ships). Depending on their

sizes they are again classified as handymax, panamax,

suezmax, afromax, vlcc, ulcc, vloc, vlgc, etc.

2. Passenger Ships

3. Serivce ships, such as cable laying submarines, off shore

supply vessels, dp vessels etc

4. Protection such as war ships, Navy submarines etc.

generally it·s refer to the fuel consumtion rate, there

are several deferent way to catlculate the specific fuel

consuption, such as volumetric method and flow method. but

these methods can be taken only in lab. no possible do it

on the sea.

When material exposed to high temperature atmospehic

situation like high level of oxygen presence, sulfer

presence and different type chemical presence cause

matrial worsening . This type of material corrosion is

known as High temperature corrosion

Narve sweedan

There r Slip ring arrangement in cranes onboard ships. the

slip rings are present within the crane which is not seen

from outside. the power lines pass throough the centre of

the crane through slip rings. The power line u see out side

is only for grab which comes through the torsion clutch. If

there is no slip ring arrangement the crane cannot turn 360

degrees.

7L 67GFCA Means that the engine have seven in-line units

(cylinders)with 67centimeter of Liner diameter,water cooled

and super charged cross head engine.

bearing number ia 6205z:

6 stands for the type of bearing , ie, deep groove ball

bearing

2 standa for the the OD and width (thickness) of the bearing

05 stands for the ID of the bearing ie, 05 x 4= 20 mm bore;