Thank you for your question! First off, I love FTL. Sea of Survival is not quite like that. You don't have individual room/crew members and no map to traverse. It is also turn-based instead pausable real-time strategy. Additionally, it is much simpler by design. On the other hand: Yes, you can unlock new ships with unique stats, just like in FTL.
I hope that this information helps you. I gladly will answer your questions about Sea of Survival.
Have fun!
Felix