We've sailed over 7000 miles with the EV-1/ACU200 combo on our Lagoon 380
. It works as designed. We didn't have to calibrate but it is an option if you think the compass
We did have a bug during the transatlantic. 1000 miles out the AP decided the rudder
was hard over starboard and was trying to compensate. Since we were downwind with 20kts TWS we knew something was off. I checked our rudder
reference and it was connected okay. Rebooting the entire STNG network was the solution.
Our masthead unit broke before Cape Verde
so while we had wind
speed we didn't have direction for the entire trip. We didn't use the Autotack just set a course with slight corrections throughout the transit. it's been a fantastic unit and the hardest working member
in our crew. I did take it off a few hours a day to give it a rest and give the rest of the crew something to do. We only had solar
and the AP is an incredible drain on batteries so between 10-2 we hand steered to allow the solar
to put something into the batteries.
Our AP was a drop in replacement to our OEM Lagoon
B&G AP. We still use the original LS pump and linear arm. I would recommend getting the P70r instead of the P70. I feel the rotary button is much more intuitive than the +/- buttons. And if you loose the tiller (like a boat did in a recent regatta) you can use the rotary knob as a tiny, tiny wheel
Our friends in our rally lost
their AP, a B&G and were stuck in Cape Verde
waiting for a replacement. They weren't the first to complain about B&G autopilots either.