Summary: Ships I

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  • 1 Ships I

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  • Where are the draft marks situated?

    They are drawn on the stem, stern and midship.
  • What is draft forward (Tfwd)?

    The draft forward is the vertical distance between the water line and the underside of the keel calculated on the forward perpendicular (an imaginary line which crosses the intersection of the waterline and stern)
  • What is draf aft (Ta)?

    Vertical distance between the waterline and the underside of the keel on the aft perpendicular (an imaginary line which aligns with the centre line of the rudder stock).
  • What is the problem with a big Trim?

    Closing and opening of the hatch covers cannot be done properly and the cranes will automatically stop working.
  • How is breadth or beam (moulded) measured?

    Horizontal distance from starboard side to portside at the outside of the frames but inside the shell plating.
  • How is breadth over all measured?

    The distance between the outer hull on starboard to the outer hull on port side.
  • What is air draft?

    The vertical distance between the waterline and the highest point of the ship.
  • Why is air draft important?

    For passing of bridges and sailing through areas with air draft restrictions for air planes.
  • How is Gross tonnage (GT) calculated?

    The ships volume in M3 below the main deck and the enclosed spaces above the main deck. The volume is then multiplied by a coefficient. All numbers used in the calculation are moulded dimensions.
  • What is Light ship weight?

    The weight of the ship including normal inventory (but without cargo, crew and fuel).
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