46 C.F.R. § 153.360 Venting system restriction.
Title 46 - Shipping
A venting system must have no assembly that could reduce its cross-sectional flow area or flow capacity to less than that required in §153.358.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Cargo Venting Systems
§ 153.360 Venting system restriction.