I believe that Prouts originally made canoes before specialising in cats? I suppose that explains the canoe club connection.
Prouts made some interesting catamarans from the famous Shearwater to large one offs.
One that I recall was called Rehu Moana which was built to go to the Arctic if I recall correctly? I have some photographs of the launch somewhere which I'll upload if I ever manage to find them.
It had an unusual wishbone mast but it wasn't a success and was later replaced with a conventional one. Googling for "Rehu Moana" comes up with quite a few hits. Below is a snippet from Wikepedia on Dr. David Lewis:
He later decided to sail around the world with his second wife and two small daughters, and built the ocean cruising catamaran Rehu Moana, for this purpose. After an initial voyage towards Greenland, he entered the 1964 single-handed trans-Atlantic race and picked up his family in the United States. They circumnavigated by way of the Strait of Magellan, the South Pacific and the Cape of Good Hope. (See his book Daughters of the Wind.) This was the world’s first circumnavigation by multihull