[Public-List] Internal mounting of depth sounder??

[Mike Meinhold]

Wow ! 100 foot warning?

I regularly tack up the Chesapeake rivers with a paper chart and the depth
sounder.  I don’t rely on it for absolute depth but relative depth. If the
chart tells me it is a steep shoal, I tack on 10 feet. It it’s a gradual
shoal, 6 feet.

I have mine external, flush with the hull. Of course it loses some of the
straight down return, but it’s plenty reliable .

Mike
Rinn Duin #272

On Fri, Feb 18, 2022 at 16:48 Stephen Gwyn via Public-List <
public-list at lists.alberg30.org> wrote:

>
>
> I actually find depth sounders pretty useful.
>
> The nearest anchorage gets pretty full in summer, and regularly
> find myself near the shore making sure I won't go bump in the
> night. I check the tide table before hand so I know how much
> water I'm going to need.
>
> The second nearest anchor is next to sand bar which shifts.  My
> chart is hopelessly out of date, I don't think Navionics on my
> phone knows what's going either. Every spring, after the winter
> storms, I tentatively follow my best guess based on the previous
> year with a nervous eye on the sounder. The rest of the year
> I just follow the same track on the chart plotter, again keeping
> a close eye on the sounder.
>
> Then, there are two stretches nearby where the water is pretty
> deep in the middle, but shoals rapidly from 100+ feet deep to
> sandy shallows a good distance out from the actual shore.  If
> you're on a run, you can just go down the middle, but if you're
> beating, you can either get out the compass and chart and take
> bearings every 2-3 minutes or keep a constant eye on the chart
> plotter.  Or you can set the depth alarm for 100 feet and tack
> every time it goes off.
>
> The only time I've gone aground was at a dock. I shouldn't
> have trusted the guy running the dock when he said there was
> enough water, I should have got out an oar, a measuring
> tape and the tide table.
>
> SG
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