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Explain the basic properties of a free gyroscope Gyroscopic Inertia: Precession: With reference to marine gyro compass, briefly explain the following: Drifting Tilting Drifting & Tilting: How a free gyroscope is converted into a north seeking device Top Heavy Control Force Path traced by a North seeking gyro: Operating principle and care of gyro compass…
Explain the procedure for taking over watch in manned engine room Taking over a Watch: Ten important things that you will do / check when on a watch in the engine room. List the indicators and alarms provided with bridge control of M/E. E/R Watch Keeping: Indicators and Alarms on Bridge: Bridge instrumentation will vary…
Timing diagram of a two stroke diesel engines. Principle of operation of 2 stroke engine Description: Large 2 stroke diesel engine Crankshaft: Bedplate: Main Bearing Caps: Tie Rod: Crosshead Guides: Principle of operation of 2 stroke engine. Why is 2 stroke engines preferred for use as main propulsion engine? Principle: Operation / Stages Reason for…
Arrangements on stern tube lubricating system and the arrangements for mitigating the oil leakage into sea Purpose: Arrangement Adverse effects of the after-end seal leakage to the propeller shafting Differences between fixed pitch propeller and a controllable pitch propeller Aspect Fixed Pitch Propeller Variable Pitch Propeller Blade Angle Adjustment Blade angle is fixed and cannot…
Routine maintenance carried out on deck machineries Deck machinery includes the following: General Maintenance: Maintenance schedule for hydraulic systems General Maintenance: Maintenance schedule for Windlass / Mooring Winch. Maintenance schedule for Cranes Maintenance routine for prime mover of deck machineries Maintenance of hatch over. Working of an accumulator and its purpose in the hydraulic circuit…
Why is it necessary to treat the sewage generated on board? Reason for treatment of sewage: Treatment before pumping: Chemical Treatment Method (Disinfecting and communiting plant): Functioning of a biological sewage treatment plant Regulation for condition and discharging sewage overboard Discharge of sewage from ships other than passenger ships in all areas and discharge of…
Shipboard electrical distribution system Parallel operation of Generators. Necessary conditions required prior to the synchronizing of electrical alternators A – Two alternators about to be connected in parallel. B – The same machines showing possible arrangement of synchronizing lights. Purpose of providing circuit breakers and fuses in electrical distribution system Fuses: Rewireable fuses: Cartridge fuses:…
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SOLAS requirements for steering gear How a rudder order signal results in achieving the desired rudder angle Hunting Gear: Two ram steering system Working: 4-ram hydraulic steering gear system Description of the system: Working: How safematic design is achieved in steering in case of Tankers of above 10000 GRT? Or Explain how automatic fail-safe arrangement…
Reverse Osmosis System of Fresh water generation on board Working: Osmotic pressure & briefly explain why pressure osmosis applied in RO system is very high Low-pressure evaporator. How waste heat from main engine is used for producing fresh water on board the ship? Working: Description a domestic fresh water generator used on board a ship….
Open feed water system used for boilers and line diagram of a complete feed water system for an auxiliary boiler showing the direction of flow in all lines. How the feed supply to the boiler is regulated. Advantages and disadvantages of water tube boiler and Smoke tube boiler Advantages of water tube boiler: Disadvantages of…