It has been a long time since I have posted, however things haven’t stopped in the autonomous sailing group. We have built and tested a quiet stable RC Trimaran, the head-designer of the boat is Rob. I have included the sketchup file here: Trimaran_AutonomousSailing.skp. And you can visit: http://sailingdrone.wikispaces.com/PVC+Trimaran for a bit more details (I warn you its messy).
Sailing with it was surprisingly successful. The Trimaran: Anna, was stable enough to carry a GO-pro and deliver pretty nice images. In the movie you see some of the footage. We also tested some other prototypes, however Anna is by far the most interesting one. It is very modular and highly mobile, it weights only 10 kilos.
Our plans are to use the APM and Ardupilot to achieve autonomousity. And it is becoming more and more realizable; especially since Rik Bootsman has come up with a way to make a cheap wind sensor, see picture. You can read more about this sensor here: http://rikbootsman.com/
Right now we are looking for anybody who can help us with the software and the integration of APM and Ardupilot. So if your interested, send me message and/or join the group.
Your feedback is more than welcome. And if you want to rebuild your the trimaran and you need help or have questions, please send me a message.
Platform for Ardupilot
Windsensor (couldn't turn the picture 90 degrees)