Paragraph 4

Unless the owner of the lifeboat requires the cubic capacity to be determined by exact measurements, the cubic capacity of a lifeboat constructed of wooden planks may be assumed to be the product of the length, the breadth and the depth multiplied by 0.6 if this formula does not give a greater capacity than that obtained by the formula set out in paragraph 1 above. The dimensions shall be measured in the following manner:—

Length—from the intersection of the outside of the planking with the top of the stem to the corresponding point at the stern post, or in the case of a square-sterned lifeboat, to the after side of the top of the transom;

Breadth—from the outside of the planking at the point where the breadth of the lifeboat is greatest;

Depth—amidships inside the planking from the keel to the level of the top of the gunwale, but the depth used in calculating the cubic capacity may not in any case exceed 45 per cent of the breadth.