Section 91.01-2 - When required(a) Except as noted in this subpart or subpart 91.05, no vessel subject to inspection and certification shall be operated without a valid certificate of inspection.CGFR 65-50, 30 FR 16974, Dec. 30, 1965. Redesignated by USCG-2006-24797, 77 FR 33877 , June 7, 2012