And then now... (spooky music) ..the conclusion!
Officially it is a violation of the EULA to install Shipsim on more than one pc.
But..
If you only use a second installment on another pc to run the server software and make (a) server(s), then an exception is made.
However, ONLY for this use. If you are caught online with two players on the same license (Maybe a friend comes over and you play on two machines, maybe your little brother uses it frequently, or whatever..) you are in breach of the rules. Only one person may use the game to play, the other pc must ONLY be used as the server.
Using both games to play, and getting caught, will most likely result in ban(s) plus getting your license key blocked.
I think that's cleared it all up nicely.
(Thanks for that, Mark!)
Regards,
Fred