so a couple of players found a ship wich was over its thickness cap and after some discussing we found a way to actually trick the cap of ships shown at https://na-map.netlify.com/ when you smach as much thickness as possible onto a ship.
so the map tells the thickness-cap for locean is 99 but they managed to gain 105 onto the ship.
ill wait till @admin responded to this and says if its a acual glitch or intended mechanic of the game till i explain how to do it so the amount of players that abuse it if its a glitch will be as small as possible.