46 CFR § 153.360 - Venting system restriction.
§ 153.360 Venting system restriction.
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.
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.