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How do you take over Cargo watch?
Taking Over Cargo watch. 1. Go to deck 20 mins before 2. Inspect accommodation ladder or gangway. It should be properly illuminated. It's step should be clean, safe and non…
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What is Category of zone of confidence?
Category of zone of confidence or the CATZOC are symbols displayed in modern ECDIS and used during the appraisal phase of the passage plan by the OOW to determine the…
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How is the carrying capacity of a lifeboat decided?
Carrying capacity of lifeboats 1) No lifeboat shall be approved to accommodate more than 150 persons. 2) The number of persons which a lifeboat to be launched by falls shall…
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How to determine the Angle of Repose of a cargo onboard?
Procedure to determine Angle of Repose onboard: Put a sheet of paper on the table. Split 10 ltr of the material to be tested into 3 sub- samples and test…
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What precautions will you take while using a Whirling Physchrometer?
Precautions when using a whirling psychrometer: i) The muslin should be clean and free of dust or deposit left behind by evaporation. If not, the dirt or deposit will not…
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What are the requirements for Ballast Water Exchange?
BALLAST WATER EXCHANGE REQUIREMENTS 1) Exchange of ballast water in deep ocean areas or open seas offers a means of limiting the probability that hamful aquatic organisms and pathogens be…
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Define TLV, STEL, TWA & TLV-C.
Generally nearly all substances have been assigned Threshold Limit Values (TLVs). The use of the term Threshold Limit Value refers to the maximum exposure to a toxic substance that is…
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What is Hygrometer? What is its principle & precautions during its use
Hygrometer (also called psychrometer) The hygrometer is an instrument for obtaining the relative humidity and/or dew point temperature of air. The type in use at sea on merchant ships is…
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What factors are to be considered prior carrying out Ballast Water Exchange?
When identifying the ballast water exchange method(s) for the first time for a particular ship, an evaluation should be made which should include: 1) the safety margins for stability and…
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What do you mean by SF & BM?
Shearing Force (SF) When a section such as a beam is carrying a load there is a tendency for some parts to be pushed upwards and for other parts to…