Looking at the Airfix website, they now only list one ship kit in their web shop, H.M.S. Victory as a starter set and it would appear that their main focus is aircraft.
**LINK**
The interest in plastics is that I like to 'throw in' a plastic kit in-between builds. Never built one as an r/c conversion, just OOB builds. The photograph is my latest, Revell's 1:700 R.M.S. Olympic, as said it is an OOB (Out of Box) build and their are inaccuracies. I've just started their Fairplay tug too.
Reading Thomas Graham's book 'Remembering Revell' their are few lines which sum it up – "a new product appeared in American stores: an electronic device that hooked up to TV sets and allowed youngsters to play games on their television screens, it was another straw in the wind signalling changes that threatened the model kit industry" then later – "We watched our charts, and the trends going down. We could see possible extinction coming". This was from the mid to late 1970s.