46 CFR 171.072
§ 171.072 Calculation of permeability for Type II subdivision.
United States · 46 CFR — Shipping · Status: effective
Cite this
- Citation
- 46 CFR 171.072, § 171.072 Calculation of permeability for Type II subdivision, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/230401
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Full text
When doing calculations to show compliance with § 171.070, the following uniform average permeabilities must be assumed:
(a) 85 percent in the machinery space.
(b) 60 percent in the following spaces:
(1) Tanks that are normally filled when the vessel is in the full load condition.
(2) Chain lockers.
(3) Cargo spaces.
(4) Stores spaces.
(5) Mail or baggage spaces.
(c) 95 percent in all other spaces.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.