47 C.F.R. § 13.8
Authority conveyed
Licenses, certificates and permits issued under this part convey authority for the operating privileges of other licenses, certificates, and permits issued under this part as specified below:
(a) [Reserved]
(b) A Radiotelegraph Operator License conveys all of the operating authority of the Restricted Radiotelephone Operator Permit and the Marine Radio Operator Permit.
(c) [Reserved]
(d) A General Radiotelephone Operator License conveys all of the operating authority of the Marine Radio Operator Permit and the Restricted Radiotelephone Operator Permit.
(e) A GMDSS Radio Operator's License conveys all of the operating authority of the Marine Radio Operator Permit and the Restricted Radiotelephone Operator Permit.
(f) A GMDSS Radio Maintainer's License conveys all of the operating authority of the General Radiotelephone Operator License, the Marine Radio Operator Permit, and the Restricted Radiotelephone Operator Permit.
(g) A Marine Radio Operator Permit conveys all of the authority of the Restricted Radiotelephone Operator Permit.