Division .4 Assumed extent of damage shall be as follows:F1

longitudinal extent: 3,0 metres plus 3 % of the length of the ship, or 11,0 metres, or 10 % of the length of the ship, whichever is less;

transverse extent (measured inboard from the ship’s side, at right angles to the centreline at the level of the deepest subdivision load line): a distance of one fifth of the breadth of the ship; and

vertical extent: from the base line upwards without limit;

if any damage of lesser extent than that indicated in .4.1, .4.2, .4.3 would result in a more severe condition regarding heel or loss of metacentric height, such damage shall be assumed in the calculations.