Before revision: The mean draft is typically calculated from the averaging of the stern and bow drafts, with correction for water level variation and value of the position of forward (F) with respect to the average perpendicular numerical value (given in the ship's drawings or stability manual)) An alternative visual approximation is that given by reading the draught at the waterline, at or very near to amidships
After revision: .The mean draft is typically calculated from the averaging of the stern and bow drafts, with correction for water level variation and value of the position of forward (F) with respect to the average perpendicular numerical value (given in the ship's drawings or stability manual)) An alternative visual approximation is that given by reading the draught at the waterline, at or very near to amidships