46 C.F.R. § 153.310 Ventilation system type.
Title 46 - Shipping
A cargo handling space must have a permanent forced ventilation system of the exhaust type.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Cargo Handling Space Ventilation
§ 153.310 Ventilation system type.