I think it’d be more for obfuscation than completely hiding it. As long as there are other hidden networks on the ship you just name it something generic that blends in. I mean this whole thing is a really stupid idea, but naming it something like “COM.NAB_ISO:4133” would draw less attention.
Has any more evidence ever been produced to show Tuta is a honeypot? The guy who made the original claim is in jail for 14 years for passing on secrets while he was director of RCMP intelligence.