I'd like to make some remarks about building this design in steel, and to extend these to include electric propulsion.
I hope the boat turns out well, and you're able to make a fine, clean, smooth hull that satisfies your goals and provides enjoyable times on the water for you and your family. I hope that your estimates of the effort and skills are as simple as your post seems to imply you think they are?
Welding metal boats:
With that said, general welding is not the best training for building a welded metal boat. The problem is primarily using general fabrication experience to attempt to imply an ability to successfully build with long seamed panels of very slightly curving, but almost flat panels. 99% of all 'welders' I've watched do a pretty poor job of their first dozen or so boats.
I include myself in that completely, I figured that because I could weld pipe "I can build a lousy ole boat!". I'd say things finally smoothed out after the first couple of dozen boats- but they didn't get completely smooth for another hundred hulls.
I think you should give some very serious thought (and practice) to boat building as it compares to 'welding' overall?
Thin metal hulls are not easily created into fair, clean and smooth shapes using the skills developed making structural welds or even pipe welding skills. Yes, a steel weld is a skill in itself, but as pipe is somewhat more involved than a structural fillet (!) so too, is metal boat building a bit more involved than fabrication 'welding'.
I hope you will give more research and concentration to your preparation to weld your hull than your apparent dismissal of that skill?
CragRat wrote:I am an accomplished welder/fabricator so that should not be an issue.
Regarding electric propulsion:
The idea does not scale down below a hundred foot of LOA. That is; small electrical storage and conversion systems are so inefficient that they cannot 'cruise' in boat less than many tonnes so the idea for a 16'er would only be functional if you 'plug in' the little boat between one to two hour rides in calm water.
If your design statement includes a few hours at most of cruising, then back to a dock/trailer and then charging, that may work OK? But there is not enough displacement in this tiny hull to provide fuel,engine, batteries and drive to have a powered/electric system that provides for any range.
There is no means of propulsion in this size as cost effective and compact as gasoline. The physics of energy conversion and storage are just not available for this small a displacement until you scale the idea up to hundreds of tonnes of vessel.
The frames (if given in patterns?) should be re-faired in a digital or manual loft before cutting if you scaled them from offset tables, and if you got them from measurements from paper then I'd suggest you run splines through the erected model to fair the chine points so you don't have errors/hogs in the plate developments or the hull.