On vessels subject to 46 CFR Subchapter T, Certification Expiration Date Stickers __________.

Correct Answer: Option D — All of the above

46 CFR 176.112 requires that Certification Expiration Date Stickers be placed on smooth surfaces, indicate the COI expiration date, and remain visible to passengers and Coast Guard personnel. This ensures transparency regarding the vessel's regulatory compliance status and facilitates efficient oversight by law enforcement during routine boardings.