SOLAS REGULATION & REQUIREMENTS FOR STEERING GEAR
Steering gear compartment must be separated from
machinery spaces and readily accessible. Every vessel should be provided with main steering
gear and auxiliary steering gear. The failure of one steering gear must not
render the another one...
FRESHWATER ALLOWANCE(FWA) & DOCKWATER ALLOWANCE(DWA)
The Fresh Water Allowance is the number of millimetres by which the mean
draft changes when a ship passes from salt water to fresh water, or vice versa,
whilst floating at the loaded draft.
FWA(in mm)...
PRESSURE SETTING OF SAFETY VALVES
Before attempting to adjust the safety valves of any boiler,its essential to verify the accuracy of the boiler pressure gauge,safety valves must be set at a pressure not exceeding 3% above the approved working...
TONNES PER CENTIMETRE IMMERSION (TPC)
The Tonnes Per Centimetre Immersion(TPC) for any draft is the mass which must be loaded or discharged to change a ship’s mean draft in salt water by one centimetre.
The TPC varies with the draught...
TAILSHAFT SURVEY
Different types of surveys
Normal survey : These are the conventional survey processes in which the tail- shaft is completely withdrawn at intervals as detailed in Table:1 and thoroughly examined to the satisfaction of the
Recognised...
SOLAS CHAPTER XII – ADDITIONAL SAFETY MEASURES FOR BULK CARRIERS
Definitions
1. "Bulk carrier" means the bulk carrier as defined in regulation IX/1.6. (Resolution 1 adopted by the 1994 SOLAS Conference) Bulk carrier means the ship which is constructed generally with single deck,...
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...
AUTOMATIC VOLTAGE REGULATOR
Sudden load current surges (eg. Due to motor starting) on a generator causes a
corresponding change in its output voltage. This is due to an internal voltage drop in
the generator winding and effect is called...