The GMDSS station has to be on the bridge, or in a compartment directly accessible from the bridge without a door, and no more communication by Morse code, there are not much need for a special Radio Operator in the old sense. With instant communication via satellite even less so.
His/her other tasks of doing the crew accounts and preparing paperwork for clearance etc on behalf of the Master has also been simplified by using computers.
BTW; Does anybody still do crew accounts on board any more??
Up till the time I returned to the offshore world I did all the accounts and wages onboard. The port papers were a real drag. Calling at an Indian port one loaded the printer with at least half a ream of paper beforehand.
Deep sea to LA after first calling at Ensenada wasn’t much fun either filling out the NOA/NOD. The mate and I would check it line by line to make sure it was correct to avoid the $5000 fine.
Brazil was also a pain in the proverbial.
I used to scan all the ships certificates into a file to save time when officials wanted copies and to preserve the originals.
Strangely the USA don’t accept copies even though they have witnessed them been copied from the original and they give you a receipt and take away the original.
When I dealt with an American financial institution I had to drag out an old fax machine because they wouldn’t accept a scanned copy of the original.