Ship Transfer Question

If I were to transfer ships to another ship where I already have an active character, will both characters be playable or will the transfer replace the character already on that ship?

both characters will be playable, transfer only moves a character to a different server but what exist in your account in that server will continue to exist.

Make sure you know what are transferable and what will be left in your original ship

https://pso2.com/manual/character/transfer

@HarmlessSyan https://ngs.pso2.com/manual/gamestart/ship this one has updated info for NGS on it.