46 C.F.R. § 153.362 Venting system drain.
Title 46 - Shipping
Unless a cargo vent system at every point is level or slopes back to the cargo tank under all conditions of heel and trim allowed under §153.806, the cargo vent system must have a drain valve at each low point (trap) in the vent line.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Cargo Venting Systems
§ 153.362 Venting system drain.
