U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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.
