46 CFR 45.157
§ 45.157 Scuppers and gravity drains.
United States · 46 CFR — Shipping · Status: effective
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- Citation
- 46 CFR 45.157, § 45.157 Scuppers and gravity drains, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/224811
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Full text
Scuppers and gravity deck drains from spaces above the freeboard deck that penetrate the shell below a line 24″ or .05B above the summer loadline, whichever is greater, must have an automatic nonreturn valve. This valve may be omitted if the piping is of thickness not less than extra heavy pipe.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.