Hi HGL
I think I can give you some of the answers you are looking for, we looked at Minerva and Probatica when they were for sale at Alvechurch in 2008. The condition of both boats was pretty poor (including the engine rooms flooded up to the engine bearers) as they had been sitting for a year without much enthusiasm from either the staff at Alvechurch or the owners (still WMPS). Anyway after a bit of negotiation we bought Probatica (mainly because we preferred the newer engine in her and we felt that Minerva would be a harder re fit as she was laid out as a floating restaurant ).
if my memory serves me right the paper work we had stated that Probatica was built in 84 with Minerva being built a year later.
The boats about 6 in all were built at Minerva wharf in Wolverhampton by lads on probation under the supervision of a couple of different boat builders, I'm not sure who supervised the building of Minerva but I may be able to give you a couple of leads if you want to try and research it.
I've been looking out to see if Minerva would pop up again as my minimal research drew a blank as to her whereabouts we where given to understand by Alvechurch (both boats sold within a short space of time in the end) that the purchasers planned to keep her as a restaurant.
I'm also in casual contact with the owners of Carp 2 one of the other boats built by WMPS and have a small number of pics from the working days thanks to one of the volunteer skippers.
As for Probatica we still live aboard although she has had a name change and yes after 5 years we are STILL working on the conversion, and spend our year around the Thames ring
Regards
Chris
(Posting on the missus log in)