Section 7318 specifies that radiotelegraph operators on the Great Lakes shall have a first-class or second-class radiotelegraph operator’s license issued by the FCC and need not be licensed as a radio operator by the Coast Guard. However, an endorsement as radio telegraph operator has to be noted on his merchant mariners’ document. If the holder ceases to have a valid FCC license, then the endorsement is terminated automatically without recourse to suspension and revocation proceedings.