interesting submarine

[former user]

I would buy a model of that 

You could make a model of that, considering Your skills 

[The_Beast]

Okay, I'm still hung up on a paddle-wheel submersible.

If the vanes swivel, assume clockwise motion while moving left to right.  Vanes at 9 and 3, / + \; vanes at 12 and 6:

_
+
I

with small adjustments to maintain trim, making one half rotation per 'clock'.

Insane?

Still say it'd make a great surface excursion boat!

Doug