Voyages within Home trade limit
5.—(1)  This rule applies to voyages within the Home trade 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 (that is after deducting all encumbrances) in square feet by the minimum number of square feet allowed for each person as follows:
upper deck in efficiently constructed shelter deck space or erection divide by 9;
second deck in upper between decks divide by 9;
third deck in lower between decks divide by 9.
The minimum height of passenger spaces shall be 6 feet.
The airing space for each passenger shall be not less than 4 square feet.
In addition the weather decks covered only by awnings may be measured for passengers the number of which is determined by dividing the clear area of the
(i)upper (weather) deck by 9;
(ii)raised quarter deck by 12; and
(iii)shelter deck, poop deck or bridge deck by 12.
When space is provided on a shelter deck, poop deck or bridge deck a length not exceeding half the registered length of the vessel may be measured.
The total number of passengers allowed shall in no case exceed the number denoting the gross tonnage of the ship.
Passengers shall not be carried on more than 3 decks including therein the deck of erections or superstructures on the upper deck.