46 C.F.R. § 171.072 Calculation of permeability for Type II subdivision.
Title 46 - Shipping
When doing calcualtions to show compliance with §171.070, the following uniform average permeabilities must be assumed: (a) 85 percent in the machinery space. (b) 60 percent in the following spaces: (1) Tanks that are normally filled when the vessel is in the full load condition. (2) Chain lockers. (3) Cargo spaces. (4) Stores spaces. (5) Mail or baggage spaces. (c) 95 percent in all other spaces.
Title 46: Shipping
PART 171—SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS
Subpart C—Large Vessels
§ 171.072 Calculation of permeability for Type II subdivision.
