46 C.F.R. § 169.217 Posting.
Title 46 - Shipping
The certificate of inspection must be framed under glass or other suitable transparent material and posted in a conspicuous place on the vessel except on open boats where the certificate may be retained in a watertight container, which is secured to the vessel.
Title 46: Shipping
PART 169—SAILING SCHOOL VESSELS
Subpart 169.200—Inspection and Certification
Certificate of Inspection
§ 169.217 Posting.

