We try to show you each ship skin as good as possible, almost as if you'd own all of them yourself.

There are a total of 4 different versions for each ship skin. There is league and empire, and there is "Brig" and "Corvette".

I assume we won't have to explain the difference between league and empire.
 

The difference between Brig and Corvette however, could be confusing.

Brig means the standard, default ship you all have. Corvette means the upgraded version. Sadly, this is a F2P only feature, and it makes you ship bigger, adding an extra cannon slot on topdeck to your arsenal. It also adds 2 cannon slots on the back to slow down or kill chasing enemies.
The Corvette has its own default skin too.
The differences between Brig and Corvette on the shared shipskins are minimal to non existant.