11.—(1) Except as provided for in paragraphs (3) to (5), a ship must not be so loaded that the appropriate load lines on the sides of the ship—
(a)are submerged when the ship is in salt water and has no list; or
(b)would be submerged if the ship were in salt water and had no list.
(2) A ship must not proceed to sea when it is in contravention of paragraph (1).
(3) When a ship is in fresh water of a density of one tonne per cubic metre the appropriate load line may be submerged by the amount of the fresh water allowance shown on the International Load Line Certificate.
(4) When a ship is in water of a density other than one tonne per cubic metre, an allowance is to be made proportional to the difference between salt water density of 1.025 tonnes per cubic metre and the actual density.
(5) When a ship departs from a port situated on a river or in Category A, B, C or D waters, deeper loading is permitted corresponding to the weight of fuel and all other materials required for consumption between the point of departure and the sea.