46 C.F.R. § 169.227 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 §§169.225 and 169.226 respectively and your Certificate of Inspection must be endorsed. [USCG–1999–4976, 65 FR 6507, Feb. 9, 2000]
Title 46: Shipping
PART 169—SAILING SCHOOL VESSELS
Subpart 169.200—Inspection and Certification
Reinspection
§ 169.227 Certificate of Inspection: Conditions of validity.

