Marine Auxiliaries

This subject includes the following topics :

1. Engine Room Layout: 

General layout of main & auxiliary machinery on steamships, motor ships & electric propelled ships.

2. Pumps & Pumping Systems:

Types of pumps, marine applications of reciprocating, centrifugal, rotary, gear, screw displacement; mono, axial flow propeller type, turbo multistage feed pumps, hydraulic balance, pressure, governing & emergency cut-out, etc. Function of air vessels, care & maintenance of pumps, emergency bilge pump, laying out procedures for bilge, ballast & oil fuel piping systems, classification & statutory rules governing above. Filling & transfer arrangements & precautions, oily bilge separators & prevention of pollution of sea by oil, domestic fresh water hydrophone system, main & auxiliary steam piping system, sea water cooling systems.

3. Deck Machinery:

Cargo winches, mooring winches, capstan, towing machines, anchor windlass, description & operation.

4. Evaporators:

Construction details, materials used, vacuum evaporators, flash type evaporators, safety fitting, efficient operation, methods of improving efficiency, use of diesel engine cooling water as heating medium & layout of the arrangement, maintenance, salinity of evaporated feed, automatic control of salinity.

5. Oil Purification:

Oil purification systems, principles & construction of self cleaning centrifuges & Filters, Clarifiers.

6. Compressors & Blowers:

Design considerations & construction of multistage reciprocating air compressors, rotary blowers, turbo blowers, ventilation blowers, emergency air compressor on diesel ships.

7. Steering Engine & Gears:

Design considerations & construction of steam, electro-hydraulic (ram type & rotary vane type) steering engines. Principe & construction of variable delivery radial & axial displacement, control from bridge - telemotor & electric control, safety devices, emergency steering, Care & maintenance.

8. Shafting & Propellers:

Design consideration for thrust, tunnel & propeller shafts, construction of Mitchel Thrust Block, description of different types of stern tube bearings, shaft bearings, method of shaft alignment, sighting by light & optical telescopic methods, methods of fitting & removing propeller. Propeller nomenclature, fixed pitch propeller, controllable pitch propeller, modern developments in propellers, ring propellers, contra rotating propeller, overlapping propellers, materials, repair technology.

9. Dry Docking:

Necessity of dry docking, periodicity, methods of dry docking, precautions before & after flooding, docking inspection & routine overhauling of under water hull & fittings e.g. stern tube, rudder, valves, etc. Performance of ships after dry docking, testing of anchor chains.

10. Stabilizers:

Working principle, types of stabilizers & their description.

11. Engine Room Working Equipment:

Engine room cranes, safety requirements & precaution for operations, lifting chains & tackles, testing & survey requirements for the same.

12. Other Shipboard Equipment:

Incinerator, sewage treatment plant, engine room cranes, chain block, tackles, anchor chain, their testing & survey requirements.