46 CFR § 11.603
Requirements for radio officers' endorsements
April 15, 2021
Each applicant for an original endorsement or renewal of license must present a current radiotelegraph operator license (T) issued by the Federal Communications Commission. The applicant must enter on the endorsement application form the number, class, and date of issuance of his or her Federal Communications Commission license.
[USCG-2004-17914, 78 FR 77909, Dec. 24, 2013, as amended by USCG-2018-0874, 84 FR 30882, June 28, 2019]