46 CFR 67.165: Deposit of Certificate of Documentation.

(a) Option for deposit in lieu of renewal of endorsement. In lieu of renewing the endorsement(s) in accordance with § 67.163, the owner of a vessel which is exempt from the requirement for documentation under paragraph (c) of § 67.9 may deposit the vessel's outstanding Certificate of Documentation with the National Vessel Documentation Center.

(b) Reporting requirement. The owner of a vessel whose Certificate is on deposit in accordance with paragraph (a) of this section must make a written report to the National Vessel Documentation Center when:

(1) Exchange of the Certificate is required upon the occurrence of one or more of the events described in § 67.167 (b), (c), or (d); or

(2) The vessel is subject to deletion from the roll of actively documented vessels upon the occurrence of one or more of the events described in § 67.171(a)(1) through (8).

(c) Validity of document on deposit. A Certificate of Documentation placed on deposit in accordance with paragraph (a) of this section is valid for the purposes of:

(1) 46 U.S.C. chapter 125;

(2) 46 U.S.C. chapter 313;

(3) 46 U.S.C. 56101, 56102 and 57109; and

(4) 46 U.S.C. 56301.