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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 Datamarine Depth Sounder		  New Topic  Topic Locked
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Kokoska
Deckhand

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USA
1 Posts
Initially Posted - 08/11/2003 :  21:36:02  Show Profile
This is my first summer with my 1987 Catalina, and until today, the depth sounder was working OK. (I believe it is original equipment). It is reading very large numbers (106, for example). We have cleaned the thru-hull on the bottom, but it still does not work properly. Has anyone had this problem and, if so, were you able to solve it?

Pat Kokoska
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 08/11/2003 :  21:56:15  Show Profile
I found a white deck plate cover to fill the hole!!!! Not enough boat units to fix that yet. Hopefully it is at least worth a laugh.
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Dave B
Admiral

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Mali
863 Posts
Response Posted - 08/11/2003 :  22:19:23  Show Profile
Welcome, Pat... There's probably a gain control on the display unit (inside the cabin). Try adjusting that to get realistic readings. It essentially adjusts the "volume" of the transducer. Battery condition can effect it.

If that doesn't work, you may have something growing on the transducer. Did you use some transducer antifouling paint on it? Regular bottom paint is death, but no paint is also a problem for a boat moored in salt water. Little bottles of transducer paint are available at most chandleries.

If all else fails, you may need a new transducer. The manufacturer may be able to provide one that fits right into the thru-hull with no additional fuss.

Let us know if you find anything--this is not an unusual problem (as I can attest <img src=icon_smile_blush.gif border=0 align=middle>).

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT
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cat5951
Deckhand

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17 Posts
Response Posted - 08/11/2003 :  22:20:44  Show Profile
Couple of years ago my Datamarine failed with the same symptom. Spoke to the guys at Datamarine and I sent the head back to them. They tested it and sent me a new transducer. Forget how much it was but certainly less than a boat unit. The new transducer is a pullout like the knot meter.


Bill
Illusion, 89 WK/TR #5951
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frich
Captain

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USA
418 Posts
Response Posted - 08/12/2003 :  07:27:35  Show Profile  Visit frich's Homepage
Pat

I too have datamarine instruments, if the unit is bad try calling LI Yacht Services in Huntington, LI 631 549-4687, they may have used gauges.

I have also heard rumors that datamarine was going to come out with replacment units that would fit in the original sleeves.

Frank R
84 C25 SK
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.