Comment by Elfener

19 days ago

The fact the even simple encryption with walkie-talkies is basically illegal might be problem (though I have no idea how/if that applies to at-sea ships).

Well, it's not illegal per se.

On the cruise I'd need to seek the written permission of the vessel's master's to operate :) (and ideally cruise company permission to even bring the transmitter on board)

Unlicenced passengers could probably plead ignorance and sneak UHF DMR radios.

Or get a business allocation and use P25 radios and once again plead ignorance :)