Add new PLAYER sub

[Respenus]

Is there any way you could make a sub that could be used by the player the single missions?

I went over quite a number of posts and topics and only found out that you need Wings3d and making subs is hard!

I really want to see a moderen sub (please spare me the "It doesn't belong in the game" talk or "Use Dangerous Waters") or maybe even add some after WWII subs.

I thank for every answer in advance.