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Old 09-21-2012, 09:59 AM   #21
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We have a cored hull so unless I want to grind out the core and at that point I might as well drill the hole which we have. Today's depth finders/transducers have better electronics than their predecessors which means more capabilities and better performance. We fish deep canyons so the ability read various deep depths in addition to shallow water is an added bonus.

But if our depth finder is ever reading 1.5 feet, we're in deep (or I should say shallow) sh.t!
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Old 09-22-2012, 06:38 AM   #22
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"We have a cored hull so"

Many cored hulls are built so the boat has solid glass on the bottom.

Some taper the core out about at the LWL others go lower , core ALL the way to the keel is uncommon.

To make a light weight boat perhaps , but on a cruiser?

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Old 09-22-2012, 06:58 AM   #23
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Silicone or regular caulk works just fine if you keep the layer thin and as bubble free as you can. The power of the sounder is also a factor in the strength of returns when you mount in the bilge.

I have done several and all the returns are acceptable.

The mounting area also doesn't have to be very level either...depending on the beam angle of the transducer and you willing to accept a couple percent error.
It isn't the end of the world if you don't wan't to mess around with complicated mountings or don't need precision soundings.
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Old 09-22-2012, 07:00 AM   #24
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Quote:
Originally Posted by FF View Post
"We have a cored hull so"

Many cored hulls are built so the boat has solid glass on the bottom.

Some taper the core out about at the LWL others go lower , core ALL the way to the keel is uncommon...
FF: I don't know what to say but Krogen 42's were built with the core to the keel from 1979 to 1993. From 1994 to 1998, which was the end of production, the core stopped at the water line. We had a Slocum 43 designed Stan Huntingford that was also cored to the keel.
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