Larinka - a wingsail powered Superyacht

Previously, self-trimming wingsail technology has usually been applied to very expensive "Superyachts" such as

"Larinka" - pictured below. This boat is currently for sale at a price of over 1 million pounds.

Larinka is an example of how successful wingsail applications can be, but she uses a complicated system
of sensors, a computer, and servo motors to provide single lever, self-tacking and adjustment.
 

By contrast, the non-electronic, (Patent applied for) Auto Control Unit
can provide almost the same degree of automatic control and can be fitted to
 less expensive applications and smaller boats at a fraction of the cost..