THE VOSPER 46" CRASH TENDER KIT BY VINTAGE MODEL WORKS
Hi Vosper21
Welcome to the forum.
I put a single motor, shaft and rudder in my fireboat so I don't have any first hand experience of a twin drive system but I would think that the shafts should exit the hull at the same points as the single shaft but equidistant from the keel. Similarly the rudders should be directly behind each prop.
There are members on this site that have done a twin drive system on the 46" model that can offer more informed guidance, hopefully they will chip in with some good advice.
Over to you chaps !
Please consider doing a build blog to document your progress.
Good luck with the build.
Robbob.
"Time flies like an arrow; fruit flies like a banana"