Finally I found some time to complete mounting the rudder and the rudder servo in the VOSPER. This was a bit tricky as I want to be able to unscrew the rudder servo while the top of the servo faces the back wall of the hull, making it impossible to get a screwdriver in there. For this reason I invented a vertical mount so I can unscrew the servo from the top of the hull.
The next thing will be to install the motor and the propeller shaft.
Here are some pictures of the rudder mount: