Oddly, two OceanVolt motors may have just bounced into my orbit. Apparently the control system was problematic and the trimaran where they were fit has gone to combi motors instead.
My thoughts have been two (3?) parallel motors belt driven spinning a common prop shaft. The regen from the larger prop in theory should work better.
The word is Halcyon could steam along at 10kn with the Perkins 4107, which made a whopping 26kw continuous. Twin 12kw motors should get us to the ballpark and keep the system at 48V without needing crazy wire sizes.
I have 32 300A LiFePO4 cells waiting for the project too. That should be enough for afternoon harbor tours and maybe run a small espresso bar.