(1) Not more than 40 pigs in any vessel shall be placed in one pen. 0.7 square metre shall be allowed per head, 2 pigs each under 40 kilograms live weight to count as one, 3 pigs each under 20 kilograms live weight to count as one.
(2) When carried in crates, a separate crate shall be assigned to each pig. Every such crate shall be of sufficiently large dimensions to hold the pig comfortably and shall also have a small enough mesh to prevent the pig from being injured. Crates shall be arranged in rows and, if stacked, there shall be 2 layers or tiers only. Rows, if not single, shall be 2 deep only. Crates shall be so arranged that all the pigs' heads in a single row face the same way, and in a double row face outwards. On the side or sides of a row on which the pigs' heads face, an alleyway shall be left, 450 millimetres wide, to allow food and water to be given. All the crates in a row which is not stacked shall be securely fastened together. In the case of a stacked row there shall be pairs of strong upright posts, which may be of a detachable type, of a height not less than the top of the upper layer or tier, securely fastened to the deck and supporting the row or stack. Such pairs of posts shall be fixed at each end of the stack and at intervals of not more than 5 crates in the stack's length. Each pair of posts supporting a stack shall be securely fastened together. Large flat-bottomed boats shall be used for conveying pigs across the harbour.