pathfinder self steering
systems have been used since the mid sixties.
You can see some early ones in "Ocean Voyaging" ( DeGraf 1975) I sailed to Hawaii
a few times with one, several have done Tahiti
, and one or trwo "did the circle" but these were earlier, less sophisticated and less powerful systems..
The most recent, the one in plans form was used on Dawn Treader II ( 42 ft cutter) for several trips to the Guadeloupe
Is, and down and up the Baja
Stardust ( catalina
27) has used one for seven years, but she was sunk in Katrina.
Sans Fruscins ( col 8.7 uses one( New Orleans
last I heard)..Psyche( col 8.7) made several thousand mile trips using one...
Any one can e-mail me and I'll be happy to talk wind
vanes endlessly <G>