T&T: GPS Error

[Jim Ague]

> Though I've never had an AP make an uncommanded turn I simply can't 
> envision ever using an autopilot in a channel or fairway of any sort. Open 
> water it's great....
~~~~~

I concur with your rule of thumb. I would add another, never leave the helm 
when the AP is engaged, although I admit having sprinted to/from the transom 
for a "bio-break".

I don't know if you're trying to make a call on Gil who had the AP problem, 
but I consider most of the Potomac River to be "open water" and AP usuable.

-- Jim Ague