LOAD LINE AND FREEBOARD
Load Line:- Load line is a special marking amidships which shows the draft of the vessel and the maximum permitted limit in distinct types of waters to which the ship can be loaded.
FREEBOARD:- Freeboard...
Propeller curve
The propeller with perfect pitch/diameter ratio will be the one whose propeller power curve and engine HP curve meets at maximum RPM. Therefore, a propeller curve is a very much significance for chief engineer
Significance...
TROUBLESHOOTINGS FOR PURIFIERS
1. Fuel oil purifier feed pump breaker faulty
Causes:
Breaker is
tripping. It is not holding at ON position.
Remedial Actions:
Operate the system
with the standby pump. Isolate the faulty breaker & change with new one.
2. Fuel oil...
GUIDELINES FOR PROCEDURES OF BLACKOUT TESTING
Guideline for procedures of blackout testing during Class Survey
The scope of this guideline for testing blackout, is to offer a general guidance and to minimize the risks associated with a complicate test and to...
RUDDER ANGLE INDICATOR
It is a device which is used to indicate the current position of the rudder blade, normally fitted in the wheelhouse, bridge wings and engine control room.
A rudder angle indicator consists of a feedback...
CHOCKS AND HOLDING DOWN BOLTS ARRANGEMENT
The main engine is
fitted on the ship’s hull with the help of holding down bolts and chocks. The
floor where the engine is installed is excessively strengthened by heavy
flooring and using additional bars and girders....
STARTING AIR LINE EXPLOSION
Starting air line explosions occur during the start sequence, when the oil, which can accumulate in the air start receivers or on the surface of the start air lines, becomes entrained with high pressure...
BOILER WATER TEST
Collecting Sample water
The first phase in the boiler water testing
is to collect feed water sample from the boiler concerned.Always take the water sample from the same
place.Test samples usually cooled to 25 degree
Celsius with the...
LUBE OIL ANALYSIS
Oil analysis(OA) is the lab test of the lube oil properties, suspended contaminants, and wear debris. OA is performed during routine maintenance to provide meaningful and accurate information on lubricant and machine condition. By...