{"data":{"id":"us/33-cfr-173.15","jurisdiction":"us","citation":"33 CFR 173.15","heading":"Vessel number required.","body":"(a) Except as provided in § 173.17, no person may use a vessel to which this part applies unless:\n(1) It has a number issued on a certificate of number by the issuing authority in the State of principal operation; and\n(2) The number is displayed as described in § 173.27.\n(b) This section does not apply to a vessel for which a valid temporary certificate has been issued to its owner by the issuing authority in the State of principal operation.","path":["Title 33—Navigation and Navigable Waters","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER S—BOATING SAFETY","PART 173—VESSEL NUMBERING AND CASUALTY AND ACCIDENT REPORTING","Subpart B—Numbering"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-33.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:35Z","sha256":"55011759df06fb6da87b9698c16eff9aae7fd8ec08f3f1c4d5313d497de20c40","source_id":"us-cfr","stale":true,"prev":"us/33-cfr-173.13","next":"us/33-cfr-173.17"},"notice":"GroundRules: Original legal text. Not legal advice."}