Artikel 85

The cubic capacity of the space below the uppermost deck is calculated by adding together half the girth and half the extreme outside breadth. The sum thus obtained is squared, the result being multiplied by the length. This product is then multiplied, when using feet, by the factor 0.0017 in the case of wooden or composite ships and 0.0018 in the case of steel ships, and, when using metres, by the factors 0.17 and 0.18 respectively. This last product shall be deemed to be the cubic capacity of the space below the uppermost deck in register tons or in cubic metres.