Section 81.18 - Notice and record of certification of vessels of special construction or purpose(a) In accordance with 33 U.S.C. 1605(c) , a notice is published in the FEDERAL REGISTER of the following:(1) Each Certificate of Alternative Compliance issued under § 81.9 ; and(2) Each Coast Guard vessel determined by the Commandant to be a vessel of special construction or purpose.(b) Copies of Certificate of Alternative Compliance and documentation concerning Coast Guard vessels are available for inspection at Marine Transportation Systems Directorate, U.S. Coast Guard Headquarters, (CG-5PW), Stop 7509, 2703 Martin Luther King Avenue SE., Washington, DC 20593-7509.(c) The owner or operator of a vessel issued a Certificate shall ensure that the vessel does not operate unless the Certificate of Alternative Compliance or a certified copy of that Certificate is on board the vessel and available for inspection by Coast Guard personnel.CGD 77-136, 47 FR 13800, Apr. 1, 1982, as amended by CGD 88-052, 53 FR 25119, July 1, 1988; CGD 96-026, 61 FR 33663, June 28, 1996; CGD 78-82, 43 FR 54186, Nov. 20, 1978; USCG-2006-25150, 71 FR 39208 , July 12, 2006; USCG-2010-0351, 75 FR 36281 , June 25, 2010; USCG-2014-0410, 79 FR 38431 , July 7, 2014 Approved by the Office of Management and Budget under control number 1625-0019