Category: Shipboard operation

Oil cargo discharging operation for oil tankers- Safety confirmations

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Oil cargo discharging operation for oil tankers- Safety confirmations

Oil cargo discharge operation involves various safety factors to be taken into consideration. Following are the most common elements and check items to be followed. The procedures explained here are only indicative, not exhaustive in nature and one must always be guided by the practices of good seamanship. Supply of I.G to cargo tanks being…

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Shipboard operation

Oil Tanker operation : Measures For Freezing Conditions

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Oil Tanker operation : Measures For Freezing Conditions

Deck Preparations The Master shall ensure that the following measures have been taken to prevent damage to Vessel, Machinery, Pipelines and Equipment prior entry into areas with Freezing Conditions. 1) Freeze prevention for Pipe lines and Valves / Systems related 2) Draining Fresh and Sea water Pipe lines, Valves, etc 3) Fire line, deck wash…

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Shipboard operation

Bridge Control / Engine Room Watchkeeping

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Bridge Control / Engine Room Watchkeeping

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…

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Engine Room Operations

Diesel Engines / Steam Turbines

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Diesel Engines / Steam Turbines

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…

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Engine Room Operations

Propulsion system

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Propulsion system

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…

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Engine Room Operations

Deck Machinery / Hydraulic Systems

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Deck Machinery / Hydraulic Systems

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…

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Engine Room Operations

Engine room marpol equipments

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Engine room marpol equipments

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…

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Engine Room Operations

Refrigeration, Air-Conditioning and Ventilation

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Refrigeration, Air-Conditioning and Ventilation

Typical domestic refrigeration system on board a ship Safeties in the domestic refrigeration system High Pressure Cut-Outs: Low Pressure Cut-outs: Oil Failure Cut-Outs: Safety Valves or bursting discs: How is refrigerant leakage detected? What is the storage temperature of Vegetable, Meat and Fish in general? Leak detection: Indications: Detection: Detector Lamp: Temperature: For meat room…

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Engine Room Operations

Generators, Alternators and Electrical Distribution

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Generators, Alternators and Electrical Distribution

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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Engine Room Operations

Steering Gears / Stabilisers

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Steering Gears / Stabilisers

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…

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Engine Room Operations