The sound signal on each pumping platform complex must be operated whenever the visibility in any horizontal direction from the structure is less than 5 miles. If the platform is under construction, this requirement may be met by the use of a 2-second whistle blast, made every 20 seconds by a vessel moored at the platform.
authority: 33 U.S.C. 1321(j)(1)(C), (j)(5), (j)(6), (m)(2), 1509(a);
46 U.S.C. 70034; E.O. 12777, sec. 2; E.O. 13286, sec. 34, 68 FR 10619; Department of Homeland Security Delegation No. 0170.1
source: USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, unless otherwise noted.
cite as: 33 CFR 150.720