Fog catcher

http://www.newscientist.com/article/mg22229754.400-fog-catchers-pull-water-from-air-in-chiles-dry-fields.html#.VTvmECz-6_Y

Good luck with your project. I will be interested in how you approach auto helm.

( sorry english is not my native language )

The main problem I will have is not what people would initially think.  There is a major difference between a boat and an iceberg.  As you know, an iceberg is 90 % under water so it would take lots of wind to move it, especially with the ocean currents.  However (good for me), the ocean currents are not simply linear currents, there are variations ( depending on depth and sometimes there are many circular currents instead of one straight line) and it is possible to use these currents to move in any direction.

  Since the iceberg is 90% under water and water current would be nearly impossible to fight using wind only, the plan is to have some "underwater sail" to move it where I want.  I will also need do detect the shape of the iceberg underwater and to rotate it.   One of the problems I will encounter is when the iceberg flips over and for this I will probably have to look at the shape of the iceberg to choose one that is less likely to flip in the near future.  I haven't explained everything in here yet, just created the project yesterday and I'm much more interested in creating prototypes then documenting everything :)   I'll document of course but I may spend less time then others on this part of the project.