http://multihulldesigns.com/designs_stock/daysail/19_tri.htm
It uses the "monoslip connectives" illustrated on the Trikala 19 page it looks like a good and simple system for a small trimaran. The waterstays come tight as the beam slides out for sailing but you can move the boat around by motor with the floats retracted. The benefits seem to be that you can get the boat narrow for a marina berth without getting growth on or having to antifoul the top of the floats as on a f-boat or occupy extra berth length like a dragonfly. There would be a restriction on overall beam though I imagine due to the length of beam coming through the boat and out the other side when folded but with the width of the main hull deck should not be much of a problem. The diagrams I've seen show just the end of the beam in the tube near the gunnel when deployed at full width as there is not much need for "bury" in the main hull gunwhale thanks to the waterstays taking the bulk of the load.
Here are Kurt's notes on the updated design and the differences to the original. Interesting to see more trimarans under construction in asia the TC627 is the most recent I know of. I'll be curious to see who is taking on the construction of this boat and whether they bought the original molds and decided to give it a bit of a facelift? Good to see more options in the production small trimaran market.
http://multihullblog.com/2013/02/trikala-19-trimaran-update/
"The Trikala 19 trimaran has been updated. The original design had a main hull and deck as 2 pieces. The update is a single piece, (well 2 halves) and looks more rounded. It also has X bows to increase speed in waves. It will be built in Asia. It can be made ready to trailer in a few minutes. It can stay on the water in the “in position” indefinitely. I’m sure it will cost less than the same size folder."
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