Welding ( Marine Engineering )
History:
Method of joining metals have been known for thousand of years, but for most of this period the only form of welding was forge welding by a blacksmith.
Number of new welding principles emerged...
Propeller Types, Working, Checks and repair | Step by Step Explanation
Propeller can be defined as: A mechanical device formed by two or more blades that spin around a shaft and produces a propelling force by converting rotational motion into thrust. The ship propulsion system along with the main engine, Thrust block,...
Understanding Shaft alingment And its methods
Shaft alignment is the process of aligning two or more shafts
with each other to within a tolerated margin. Shaft system would
ideally be installed with straight alignment and remain in that state
during ship operation.But many factors affect...
Air Compressor maintaince and Troubleshooting
In order for ships air compressors to work effectively, at any time,
you should know what the most common problems can occur and their
causes. You need to know how to take care of vents; How to hold and
replace the air valves; Maintenance of...
Seawage treatment Plant on board ship | Explained
The discharge of untreated sewage in controlled or territorial waters is usually banned by legislation. International laws is in force to cover sewage discharges at certain distances from the earth. Accordingly, and to meet certain standards, all...
Merchant Navy: Decreasing jobs, salary and long contracts What's the way ahead?
The BIMCO / ICS 2016 report of the world-wide research on man power supply in the Merchant Navy has found very disappointing statistics about Crew / Rating. The demand for crew in the market is low and supply is high. According to their estimates,...
Watch Keeping at sea for Marine Engineers | Step-by-step
Watch keeping is an integral part of marine engineer’s duties on board ship. The technicians perform tasks and routines for monitoring the ship's engine room. The clocks are divided into three periods of four hours and the following work must be...
Psychology (Marine Engineers)
As per the new guidelines of D.G Shipping, Subject Psychology is to be inculcated in the Syllabus of Marine Engineering.
Psychology
Definition: Psychology is scientific study of Human and Animal Behavior.
“It’s is define as scientific study, because...
Basics of Main Air compressor on board Ship
Main Air compressor on ship is used to produce service, control and starting air. In the following article we explain the introduction, working and maintenance done on Main Air compressor.
What is a compressor?
A compressor is a machine capable...
How to prevent oil spillages and leakages during bunkering operation
Oil spills and leaks in fuel operations are an important source of contamination from discharges from ships. Experience has shown that most of the bunkers spill and overflow, which can be attributed to human error.
It is important that all operations...
Comparison between shell and plate type Heat Exchangers
Both the Shell and Tube and Plate Type heat exchangers work with the same principles, exchanging heat between two fluids through thermal conduction, but with very different construction methods. Both plate type and shell and tube heat exchangers...
Conventional fresh water cooling system | Explaned
The machines installed on ships are designed to work with maximum efficiency and performance for long hours. The heating energy should be so reduced or heat transfer be increased by a cooling means to avoid a malfunction or a machine failure to...
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