Need help with GWX free camera!

[Hitman]

From GWX3 readme:

GWX Camera Modifications by Kpt. Lehmann, Ref, and Sergbuto
Merged camera functions by Sergbuto are:
1. Free-walk/move camera in the Bridge View (F4)
2. Destabilized binocle which moves together with the boat and follows the free-walk camera in the bridge view.
3. Free-walk interior camera in the conning tower.
4. Shaking with the boat movement and collision shock for the hydrophone, radar, nav. officer, weapon officer, helmsman, captain bed views and free-move camera in the Command room. Credits for the idea to add shaking/collision shock should go to l3th4l.

How do I walk around the deck and conning tower? What key/s must I press?

Thanks for any help