TECHNICAL QUESTIONS & ANSWERS PART-14
Q. Referring to the latest IMO “ Code on Noise Level onboard Ships”, define and explain the following terms:-
A). A- weighted equivalent sound level
B). C-weighted equivalent sound level
C). Sound pressure levels
D). Weighted sound reduction...
FUEL VALVE WORKING
The fuel is supplied by the fuel pumps to the fuel injectors or fuel valves. For the fuel to burn completely at the correct time it should be broken up into tiny droplets in...
INCLINING EXPERIMENT
This experiment is carried out on new ships and those that have had large structural alterations made, to find out the new centre of gravity (kg) and metacentric height (gm) and further to know...
SHAFT EARTHING
When steel is immersed in sea water (e.g. a ships hull) small galvanic current are initiated at anodic areas of the metal surface, causing corrosion.
Such corrosion prevail at the stern of a ship, where...
Why Longitudinal corrugated bulkhead have horizontal corrugation?
Longitudinal Bulkhead are provided to add longitudinal strength to the ship. ...
Sweep Test
The aim of the test is to show the correlation between the engine’s corrosive impact and the lube oil’s ability to counter act this.
The fastest way to evaluate the corrosive behavior of an...
MAIN SWITCH BOARD
Survey of MSB
Proper cleaning to be
carried internally as well as externally normally carried out when board is
completely dead (all generator stopped and prime mover locked off). Inspect for
dirt and dust (electro clean and vacuum...
RESERVE BUOYANCY
Reserve buoyancy can be defined as the volume of the enclosed spaces above the waterline. It can be expressed as a volume or as a percentage of the total volume of the vessel.
The volume...
Shop trial & Sea Trial
Here we will discuss the brief nature of both , what all procedures are carried out during shop trials and sea trials.
A. Shop Trial
...