Here's a sample of the wireframe at this point.
It's the rudder roughly placed to help explain the scaleing I used.
Each of the lines on the hull bottom width equals 6 inches.
If you compared that to the rudder?
You'd find the rudder is 36 15/16" tall.
That matches the plans I work from.
Once the model is ready to start importing, I'll remove the 6" lines as a 1' line matches the Buttocks measurements from those plans and it will still be a very smooth in-Game model.
Plus it will reduce the faces count to allow better useage else where.