When a tank vessel is at sea and the tanks contain oil, valves and closing devices in the cargo or ballast piping system or in the transfer system must be kept closed except they may be opened for cargo or ballast transfer to trim the vessel.
authority: 33 U.S.C. 1903;
46 U.S.C. 3703,
3703a; Department of Homeland Security Delegation No. 0170.1. Subparts G, H, and I are also issued under section 4115(b), Pub. L. 101-380, 104 Stat. 520; Pub. L. 104-55, 109 Stat. 546
source: CGD 74-32, 40 FR 48283, Oct. 14, 1975, unless otherwise noted.
cite as: 33 CFR 157.45