46 C.F.R. § 91.27-5 Certificate of Inspection: Conditions of validity.
Title 46 - Shipping
To maintain a valid Certificate of Inspection, you must complete your annual and periodic inspections within the periods specified in §91.27–1 (a) and (b) and your Certificate of Inspection must be endorsed. [USCG 1999–4976, 65 FR 6502, Feb. 9, 2000]
Title 46: Shipping
PART 91—INSPECTION AND CERTIFICATION
Subpart 91.27—Annual and Periodic Inspections
§ 91.27-5 Certificate of Inspection: Conditions of validity.

