[C320-list] 2007 C320 MK II Fin Keel Depth Transducer Offset

[John Meyers]

Chris, thank for this timely post.

Just yesterday, I was anchored in a favorite place in a very relatively
level and soft sandy bottom which my depth meter read 7.6 feet under my
wing keel. I was snorkeling around my boat cleaning the waterline and
noticed that my keel had only about 3-4 feet under it.  I really like
Chris's method and slowly and gently "grounding" on this soft sand when the
surface is really calm and then setting the offset based on the reading at
that point.

Thanks again. Finally I will get this right and easily without measuring
devices.

John Meyers
Muskegon, MI
Wind Chime #406

On Tue, Aug 2, 2016 at 7:33 PM, Chris Burti <clburti at gmail.com> wrote:

> I can answer as I just calibrated new instruments recently and am on
> Commitment working on a new project.
> The latter is 1.5'
> I initially set at 2.5 and grounded so I reset it while I was on the
> bottom because I have also measured the depth from the actual waterline
> while on the hard. 4'6" on a 2001 wing keel. Now my sounder reads precisely.
>
> Best Regards,
> Chris Burti
> Commitment, #867
>
> > On Aug 2, 2016, at 5:46 PM, Utility Email <kswanson123 at comcast.net>
> wrote:
> >
> > I have an obscure question for you.
> >
> > Does anyone happen to know the depth transducer offset dimension for a
> fin keel C320?  Either the vertical distance from the transducer on the
> underside of the hull (forward of the keel) to the bottom of the fin keel
> or the dimension from this depth transducer to the still water line (SWL)?
> >
> > I did not measure this distance at my last haul out and I can't seem to
> find it anywhere in the manual.  I guess I can just use 6 feet as that is
> the draft of a fin keel C320, but I would like to be more precise then that.
> >
> > Thanks for your help.
> >
> > David Swanson
> > S/V Emily Ann
> > 2007 C320 MK II, No. 1107
> > Mukilteo, Washington
> >
> >
>