As a result of the close-down of the UK by the British Government last night, we have made all the Buy/Sell areas read-only until we open back up again, so please have a look at the announcement linked here.
Ship Modeller magazine(?) had plans of a McTaggart-Scott catapult in the late 1980s. I have the magazine and photocopy somewhere. I found them yesterday, but rather than breach copyright, I also did a search on the web. There is a fantastic build by a Singaporean modeller over on Military Modelling and he has all the details of plans. http://www.militarymodelling.com/forums/postings.asp?th=131085 HTH Tony