Good that you mentioned Overlander as they are my go to motor for my builds and was the one I was going to recommend.

The 47" Huntsman 31 is a quite big and heavy boat and so needs a torquey motor to get it moving and then sufficient revs to get it to plane.

The Tornado Thumper V3 5045/10 720kv on 4S/14.8v should give good performance. You need a minimum 80amp ESC.

Have you got a charger for LiPo batteries? To charge safely you want a smart charger and Overlander do some good ones. I've got a Turnigy Acucell 6 which is good with a mains adapter but you can't get them new anymore.

Starts getting expensive but you can charge other battery types and the battery can be used in more than one model. Ive got 2s and 3s Lipos but will need to get a 4s for my Swordsman 33.

Brushless can be manic, especially inrunners, but if you are sensible with the kv rating and battery volts then they are fine and controllable. I like brushless, especially the build quality and use them in all my Fairey builds even the slow ones. I use one in my River Cruiser on 2s and it pulls away very slowly and smoothly and pootles along.

Hi Chris thanks that would help I did use lead acid and mfa torpedo 850 in my Vosper but thinking along the way of brushless and lipo never really wanted warp speed like most of our club but been looking at over lander thunder tiger motor and yes the prop shaft sourced at a place I got my last one from can’t remember off the top of my head but m4 18inc I think it was howes models Oah and got the new windscreen few months ago but just haven’t decided on the frame was going to go with plastic but wanted a more natural look ps pic of Vosper 66 I had restored that one from an almost pile of sticks lol

When I bought my 47" version it was fitted with the ubiquitous 850 brushed motor and heavy lead acid battery and the performance was mediocre at best.

Wez, are you Ok with brushless and LiPo battery? I was going to change mine so can give you advice. I sold mine before doing so but that's what the new owner did and it performs really well.

I'd recommend a 5mm prop shaft though I see SLEC suggest 4mm. And they do a windscreen now, though not metal framed.

Chris