What kind of skiff (?) is this ?????

Last week-end we have seen a very strange dinghy on our lake in the Netherlands:
It looks somewhat like a B14 featuring only a huge jib with the mast standing far aft in the cockpit. It had racks and people sailing close reported that it accelerated very fast in gusts => very lightweight? The jib showed a big "R" if that helps.

It was launched at a British Sailing Club, so does anyone know this type?

Thank you!

I don't know of an R from the UK and in any case that would not have been a jib only rig! ISTR seeing something like that many years ago at a combined Moth/Cherub nationals.

I don't have a lot of confidence in the usefullness of the jib only format. I think it comes from muddled thinking:- people thinking, "Oh a mast does horrible things to the flow on the front of the sail, lets do without it", but without appreciating the diffficulties of a knife leading edge and the aerodynamic drawbacks of a triangular sail. Solving one problem and creating 10 others...

like this?

a big jib and a twin mast






I think Paul Elstrom did a 'Trapez' dinghy something like this in the 60's, ( but better ).
Only one trapeze wire, you just stay hooked on and go behind the mast.

Its been a while since ive pulled this out but:



Sounds interesting! Im trying to picture a cross between I luv wights contraption, and b14 and a hobie tiger... Im struggling...

The elvstrom trapez was a 'normal' dinghy


but the Radius is what I was thinking of.... and I'm sure it was about in the 70's.