NAVAL ARCHITECTURE NOMENCLATURE
Aft Peak Bulkhead is a term used for the first main transverse watertight bulkhead forward of the stern. The aft peak tank is the compartment in the confine part of the stern aft of...
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...
PROPELLER WITH SLEEVE
Precautions are necessary to prevent the propeller jumping at release. A development of the keyless method involves a cast iron sleeve which is bonded into the propeller boss with a special form of Araldite...
SURFACE PREPARATION
IMPORTANCE OF SURFACE PREPARATION
Cleanliness is essential for steel surface to hold coating. Paint will not adhere or bond to steel surface if there is loose rust, oil, grease, dirt, salts, chemicals, dust, etc. are...
MATERIALS USED IN SHIPBUILDING
INTRODUCTION
There is a
wide range of materials used in shipbuilding comprising ferrous metals, non-
ferrous metals, plastics, GRP (Glass Reinforced Plastics/ fiber glass) and
wood.The most
widely used material in ship building remains steel especially plan carbon or
mild...
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...
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...
HEAT TREATMENT
Heat Treatments
Heat treatments are used to change the physical & mechanical properties of the metal without changing its shape. They are important processes in metal manufacturing which increase required characteristic of the metal, while...
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...
BASIC CONCEPT OF INTELLIGENT ENGINE
central electronic control system is the brain
of the system which monitors and evaluate the general condition to keep the
operating parameter within limits and keep the performance of the engine
better.The intelligent engine provides flexibility in
operation...