016C D
 What is the minimum operator license required to perform or supervise the performance of at-sea adjustments, servicing or maintenance which may affect the proper operation of the GMDSS station?
a) Marine Radio Operator Permit.
b) General Radiotelephone Operator license and Radar endorsement.
c) Designated maintainer possessing a GMDSS Radio Operator license.
d) GMDSS Radio Maintainer's license.
