Searail Trimarans discuss the design objectives of their folding system

From the following press release on Searail Trimarans website:

http://www.searail19.com/2015/03/the-searail-19s-revolutionary-folding.html

Weighing in at less than 20 pounds

The SR-19’s revolutionary folding system is just one of many engineering innovations incorporated into this Nigel Irens' design. The folding system allows the boat to be folded, unfolded, or the entire beams/float system to be de-mounted in literally seconds. The folding system is a key structural component while remaining extremely lightweight and completely hidden under sail. An evaluation of an on-the-water folding system was found to have negative effects on a trimaran of this size. Using the latest Naval Design and Engineering 3D Modeling software, we identified several safety and performance concerns with the traditional on the water folding strut system.

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Searail trimaran folded on the trailer, photo courtesy Searail Trimarans

Searail 19 trimaran updates on present production status

Thanks to the excellent smalltrimarans.com

http://smalltrimarans.com/blog/?p=12824

The SeaRail-19 program had an excellent 2014 with 10 boats now delivered and 5 scheduled to arrive in the Midwest this Spring. We are totally committed to building the most affordable, high quality, and high performing, One~Design Trimaran fleet on the market. With a team compiled of some of the highest-regarded individuals in the multihull industry and over 2 ½ years of on the water, development the SR-19 has evolved into a very dynamitic watercraft.

Offering an unmatched power-to-weight ratio with a fully laden weight of only 700 pounds, upwind sails of 258 sf and a 278 sf spinnaker totaling an impressive 536 sf of sail. The 19 is the total package – whether it’s day sailing, camping, or racing, the 19 is like no other.

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Searail 19 Sports 2014 model, larger ama's and carbon beams on upgraded model

From the following entry on the Searail 19 trimaran website:

http://www.searail19.com/2013/09/2014-searail-19-sports-new-larger-amas.html

The SeaRail 19 Design Team has just launched the new 2014 model - complete with larger amas!

The volume of the new floats has increased by more than thirty per cent and are secured by carbon beams.

The SeaRail 19 has gone through an additional six months of rigorous sea trials, covering three continents and has sailed through a multitude of conditions in excess of 20 knots.

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and a video of the upgraded boat in action.

http://www.youtube.com/watch?v=eFuXB9VJ4XU