I had a similar experience however after great confusion and frustration I
tracked the problems down. I have a tiller with a Raymarine ST2000 that
suggested that I needed to redesign my keel on the North Channel granite!
The two culprits?
1. VHF handheld on my waist belt.
2. a classic family 1940s stainless sailing knife with marlin spike.
Don
Viking 34 Life
________________________________
From: "Della Barba, Joe via CnC-List" <[email protected]>
To: "[email protected]" <[email protected]>
Sent: Monday, November 3, 2014 10:26 AM
Subject: Re: Stus-List Autopilot Gremlin - Caution!
Bridges are full of rebar and will turn an autopilot quite a bit. So will
sitting near the fluxgate with an iPhone on your belt with the magnetic closing
latch holster.
Joe Della Barba
Coquina
C&C 35 MK I
From:CnC-List [mailto:[email protected]] On Behalf Of Jim Watts via
CnC-List
Sent: Sunday, November 02, 2014 11:42 PM
To: Rick Brass; 1 CnC List
Subject: Re: Stus-List Autopilot Gremlin - Caution!
We have a few magnetic anomalies around here, I know not to put Otto in charge
anywhere near them. Most are on the charts. Some are scary finding them.
Jim Watts
Paradigm Shift
C&C 35 Mk III
Victoria, BC
On 2 November 2014 19:05, Rick Brass via CnC-List <[email protected]> wrote:
Good rule, Dennis.
>
>The bridge is, of course, iron and will alter the magnetic field seen by your
>compass to some greater or lesser extent, depending on the amount of iron and
>the proximity to your fluxgate compass.
>
>I was sitting next to the tiller pilot on my 25 one night, and had my car keys
>in my hip pocket. When I got up to look at a channel marker I was passing
>near, the boat changed course rapidly. Suddenly I was not just “close to” the
>mark, my standing rigging was tangled in it.
>
>It was a very expensive lesson in just how sensitive those little fluxgate
>compasses can be.
>
>
>Rick Brass
>Washington, NC
>
>
>
>From:CnC-List [mailto:[email protected]] On Behalf Of Dennis C.
>via CnC-List
>Sent: Sunday, November 02, 2014 9:25 PM
>To: CnClist
>Subject: Stus-List Autopilot Gremlin - Caution!
>
>Just a caution for those who regularly use an autosteerer. The Admiral and I
>were using the wheelpilot (Simrad WP30) as we passed under the Dauphin Island
>last weekend on our way to Pensacola.
>In the middle of the bridge, the wheelpilot went bonkers and steered hard to
>starboard. Luckily I was right there and disengaged it before we hit the
>fenders guarding the passage.
>No idea what caused it. Underground cables, gremlins, space aliens, etc.?????
> There was a line of overhead power cables but they were about a tenth of a
>mile behind us.
>All I know is new rule for the boat now. No autosteering through a bridge.
>Dennis C.
>Touche' 35-1 #83
>Mandeville, LA
>
>_______________________________________________
>This List is provided by the C&C Photo Album
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>
>
_______________________________________________
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