September 24, 2020

Loadlines and zones

Because of the different densities of fresh and salt water, the displacement of a vessel and hence her draught will change from one area to another. The density of fresh water is 1 tonne/cubic metre and is used as the basis against which the relative densities of other substances are […]
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September 24, 2020

Freeboard and statutory freeboard

Freeboard. The freeboard of a ship at any time is the vertical distance between the upper edge of the deck line and the water line. Statutory Freeboard. Statutory freeboard is the vertical distance between the upper edge of the deck line and the upper edges of the respective loadlines.
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September 24, 2020

Zones/seasonal zones and area

The maximum depth to which vessels are allowed to load at different seasons and in different parts of the world are laid down in Schedule 2 of the Loadline Rules (1968). An official chart has been drawn up, showing the sea areas of the world divided up into zones and […]
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September 24, 2020

Logbook entries

All ships are required to keep a deck and engine room log in order to keep a record of activities during a voyage. The Deck log is kept by the officers of the watch and usually includes the following information: Courses steered. Compass errors. Engine movements. Daily distances covered. Time […]
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September 24, 2020

Certificates to be carried

The following certificates must be carried by merchant ships: Certificate of Registration. International Tonnage Certificate (this gives the gross and net tonnage). Passenger and Safety Certificate (if a ship carries more than 12 passengers). This gives the number of passengers the ship is registered to carry and also covers the […]
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