Number of passengers
3.—(1)  This rule applies to voyages beyond the Home trade limit, other than voyages in areas specified in rule 4.
(2)  The number of passengers allowed shall not exceed the number to be ascertained as follows:
(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.—The number shall be determined in the same manner as for first class passengers if berths are fitted; if berths are not fitted, the clear area of the deck (that is after deducting all hatchways and encumbrances) in square feet multiplied by the height between decks and the product divided by 72 gives the number to be allowed — 6 feet between decks is to be the minimum height. The weather deck and parts of the poop deck, bridge deck, etc., which are exposed to the weather, are not to be included in the measurements for passengers.
(d)Berths for children.—If small berths for children between one and 12 years of age are fitted they may be counted if an owner desires it, on condition that the space so allocated for the exclusive use of these passengers is at least 36 clear superficial feet for every two children allowed, and the berths are at least of the following dimensions:
for children between one and 3 years of age
… 3 ft. 6 ins. by 1 ft. 4 ins.
for children between 3 and 8 years of age
… 4 ft. 6 ins. by 1 ft. 6 ins.
(e)Spaces in deck houses and other erections are not to be measured for passengers unless they form part of the permanent structure of the ship.
(f)Airing space is to be set apart, either on the upper deck or on a poop or bridge deck, for the use of all the passengers as follows: For each saloon or first class passenger, 36 square feet; for each second or third class passenger, 24 square feet.