Voyages within 30 mile limit
7.—(1)  This rule applies to voyages within the 30 mile limit.
(2)
(a)Saloon or first class.—The number of properly constructed fixed berths or sofas fitted shall determine the number of passengers to be allowed, if sufficient light and ventilation and a reasonable amount of floor space are provided.
(b)Second class.—The number shall be determined in the same manner as for first class passengers.
(c)Third class or unberthed.—The number shall be determined in the same manner as for first class passengers if berths are fitted. When berths are not fitted the number of passengers shall be determined by dividing the clear area of the —
(i)upper deck by 6;
(ii)raised quarter deck by 9;
(iii)shelter deck, poop deck or bridge deck by 9; and
(iv)floor of the saloon or cabin under the upper deck by 9.
When there are seats on skylights or companion openings the measurements may be extended to the back of these seats.