CFR›Title 33›Chapter I›Part 161›33 CFR Part 161 Subpart A Citation33 CFR Part 161 Subpart AContainsSubject groups General Rules–Services, VTS Measures, and Operating RequirementsCorpusDaily eCFRDisplayed edition2026-10-01Last updated2026-10-01 Subpart A—Vessel Traffic Services Subject Groups General Rules General Rules Services, VTS Measures, and Operating Requirements Services, VTS Measures, and Operating Requirements Authority46 U.S.C. 70001, 70002, 70003, 70034, 70114, 70119; Pub. L. 107-295, 116 Stat. 2064; DHS Delegation No. 00170.1, Revision No. 01.3.SourceCGD 90-020, 59 FR 36324, July 15, 1994, unless otherwise noted.