Yeah, but actually named after Great Barrier Island in Auckland's Hauraki Gulf (not after the
Great Barrier Reef in Australia)
But the same principle applies in
Queensland too.
The original idea being a relatively
cheap, light, simple, fast
boat that could be raced around the cans as well as
cruise out to Great Barrier Island in a day's run (around 50nm away, so quite far for a small cruising
monohull 30+ years ago), and with the addition of a boom tent provide a camping aboard type platform for young friends or
family.
The original design was very well regarded in
Auckland back in the day and many a young sailor aspired to own one (often bought in
partnership with some mates and kept on a swing
mooring in a tidal bay where the
keel boats couldn't stay - life was easier without marina bills and it left more
money for beer).
https://www.tennantdesign.co.nz/product-category/sail/