Marine Engineering

Bumping clearance is the clearance between piston top and cylinder cover with piston at TDC position. Bumping clearance is checked to ensure efficient and safe operation of compressor. Too small a bumping clearance may result in piston bumping against cylinder cover resulting in sever damage. To large a bumping clearance would mean that more high pressure air trapped above piston at end of compression or delivery stroke has to be expanded back to lower pressure before fresh air from suction valve is introduced. Thereby reducing net air introduction in cylinder each stroke. Hence volumetric efficiency decreases, therefore less air throughput, more running time of the compressor. Bumping clearance is optimized, normally it is 0.5% cylinder bore. How to Adjust Bumping Clearance: Practically , in multistage single crank air compressor, bumping clearance is adjusted by: LP stage: Adding or removal of shim/ gasket of varying thickness between cylinder cover and cylinder b...

Motor: Type of engine Specification, MC-C stands for Lubrication in Engine Crosshead Lubrication How will we know Starting Air valve is leaking During Manoeuvring  Engine Fails to Start On Air Reasons Bursting disc Explain LT & HT corrosion Framo system Why IG used For which cargo we need IG IG requirement as per Deadweight of the ship The indication of Demister Fouled in Scrubber? Reasons for Hyd. oil Contamination  Magnetic filter purpose Working of an Exhaust valve, how to ensure valve rotation,  scavenge fire and actions, reasons for scavenge fire  crankcase inspection of generator  air compressor safeties gear pump overhaul boiler safeties,  fusible plugs and what all places they are used, fusible plug in a boiler,  you are on watch black out occurs your course of action, as per regulation in how many seconds the standby generator must start,  broken stud removal techniques,...

Latest development in IMO Latest development in IACS history of IACS Engine fore end vibrations. Outing C/E says this problem from last 3 months, what will you check. Anchor not heaving up, what will you do as C/E M/E T/c what is VTI Theory how it operates and how will you do it.  EIAPP certificate who issues and what are its contents. Taking over a new ship in the yard. For endurance trials, what all checks you will carry out on M/E.  Noise survey who carried out and when Solas ch xii reg 12,13 ESP what to check after the ship passes more than 10 years  MS act national shipping board conflict of law CLT and ducted propellor design and function difference HV system, the isolation process London dumping convention Marine insurance principles and implied assurance Organisational Behaviour How many titles and articles in MLC 2006? What is article V in MLC 2006? How to get MLC certification for a new ship? Documents in MLC. What is CBA? Parametr...

You are joining as CE. How will you come to know ISM is effectively implemented. Assignment of loadline. When class notation is given. What all class notation do you have. what are green house gases? vetting and port state control difference. In the way to engine room collision has taken action as chief engineer. As CE what repair will you suggest to carry out in Drydock In a voyage sudden increase in fuel consumption reason.how will you find the fault. What is CLC ? What is the definition of persistent oil. What is the SCOPIC clause? Assignment of loadline. What is CIC by PSC? How will you implement ism on chief engineer on a new ship How will you prepare for seq survey How will you prepare loadline survey Aux eng crankshaft broken how will you prepare the report for H and M surveyor LO consumption high ..what checks Drydock preparation You have fuel which is not compliant , and you have to leave port and no fuel is available , what will you do as a chief engin...

Joined ship..how u verify the implementation of ism...what you see in the master review GIC- relation with H&M Condition of assignment stcw95 - competencies of trainee UNCLOS...purpose What are vessel costs...drydock cost comes under? Name of the document where u find all machineries listed that come underclass? How is redundancy happening on ME engines Diff between code 17 &30. How to decide to give code 30 or 17 how to have professional judgement. BBS Exhaust leaking from ME exhaust pipe what would you do. How to calculate thermal efficiency from sfoc Protection as a seafarer if wages not payed for 3 months Underwater survey requirements Boiler survey req Why untreated sewage allowed after 12 miles and not within 3 miles Advantages and disadvatages of lng as fuel over conventional fuel MLC Securities for wages Which code does damage stability come under Subdivision load line How as a chief engineer you reduce co2 Your requirement for young seafar...

Bunkers should not be taken when the ship is on the blocks. In cases where ships sail out immediately after dry-docking. Bunker is to be supplied after the ship has undocked and is floating. Shore power cables are to be connected after the ship has docked and the dock is dry. The cables should be disconnected before flooding the dock. During the flooding of the dock, the flooding is stooped when the level of water in the dock reaches just above the high suction box. All the sea suction valves under the floor plates should be checked for any leaks. In this situation, the ship is not floating and is still sitting firmly on the blocks. This verification is necessary to avoid any mistakes made by shipyard staff whereby some valves have not been fitted their cover joint sand gland packings. A second docking can be avoided by this check. The Master and C/E should visit the dry dock before flooding and verify the following before giving orders for flooding:  ...

SCOPE OF DRY DOCK WORK:   The list of jobs to be carried out during dry docking are as under: BOTTOM INSPECTION AND CORRECTIVE ACTION AS RECOMMENDED BY CLASSIFICATION SOCIETY SURVEYOR .                                                                                                                                                                               The first visit of the surveyor on the ship. This inspection is carried out and the dock is dry with the ship's bottom scraped free of barnacle growth. This inspection is usually carrie...