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jerlim
Master Marine Consultant

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USA
1484 Posts
Initially Posted - 08/31/2007 :  16:30:56  Show Profile
While doing some straightening, I decided to open up the access port located in the forward storage cubby at the v-berth. (don't know why the PO used a clear cover, but he did)...



I then noticed this device:



sorry for the fuzzy images...





It appears to be a cast piece. I'm not sure where the wire goes to, although I will check behind the circuit panel this weekend. What is the apparent wire handle for?

If it's a depth gauge, there is no read out device, unless it somehow connects to the Garmin 162 Plotter...I'm stumped.

Many thanks for your thoughts!
Jerry
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britinusa
Web Editor

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USA
5404 Posts
Response Posted - 08/31/2007 :  16:39:07  Show Profile  Visit britinusa's Homepage
Probably used the clear cover because it came with the access plate

Could be either Depth or Temp gauge sensor.

Thinking outside the box: It could be shark repelant, antenna ground, salination sensor, if you were a WB then could be a 'tanks full' sensor
Paul
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Nautiduck
Master Marine Consultant

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USA
3704 Posts
Response Posted - 08/31/2007 :  17:54:56  Show Profile
It is a torpedo tube. Some models of the C25 were equipped with these devices in an attempt to help eradicate jet skis. The weapons were banned in the early 1990's and most were removed at that time. Whatever you do, don't pull the wire handle.
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jerlim
Master Marine Consultant

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USA
1484 Posts
Response Posted - 08/31/2007 :  17:59:45  Show Profile
If only...frankly the only device absent from the boat is a 20mm deck cannon...
Edited by - jerlim on 08/31/2007 18:01:00
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 08/31/2007 :  18:50:37  Show Profile  Visit delliottg's Homepage
Much as I'd like the deck cannon sometimes, my best guess is it's an old depth sounder transducer. I found a similar "surprise" tucked away on my San Juan 21. Saw the wires first when I opened the access panel, couldn't figure out what it could be, poked around a bit and located the through-hull, then went outside (it was on the trailer at the time) and took a look. Sure enough, there was a painted over transducer just forward of the keel that I'd never noticed before.
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Don B
Captain

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USA
317 Posts
Response Posted - 08/31/2007 :  20:17:42  Show Profile
Whatever you do...DO NOT CUT THE BLACK WIRE!

<font size="5"><font size="3"><font size="2">Actually, I don't have a clue.</font id="size2"></font id="size3"></font id="size5">
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 09/01/2007 :  08:14:23  Show Profile
My money's on an old depth sounder transducer or speedo, it's in the right spot for either one. What's it look like on the other side of the hull?
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 09/01/2007 :  09:13:05  Show Profile
Good spot for a depth sounder... so the alarm sounds milliseconds before you hit the rock. A flat disk outside is the clue. But it appears to predate the kind that integrate with your GPS. Follow that black wire...
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JimB517
Past Commodore

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USA
3285 Posts
Response Posted - 09/01/2007 :  09:39:14  Show Profile  Visit JimB517's Homepage
No doubt it is an old depth sounder. I have something similar. It used to connect to the old depth sounder with spinning lights.
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Admin
Forum Admin

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460 Posts
Response Posted - 09/01/2007 :  10:38:42  Show Profile  Visit Admin's Homepage
depth sounder or speedo.
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tinob
Master Marine Consultant

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USA
1883 Posts
Response Posted - 09/01/2007 :  11:16:14  Show Profile
I think Don B's sage advice is to be followed, you MUST cut the blue/green wire first...then proceed acording to the owners manual

Val on Calista # 3936, Patchogue, N.Y.
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jerlim
Master Marine Consultant

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USA
1484 Posts
Response Posted - 09/01/2007 :  17:44:23  Show Profile
I pulled the handle...it's an inflatable safety collar for the boat...
Edited by - jerlim on 09/01/2007 17:44:51
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Bubba
Admiral

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USA
542 Posts
Response Posted - 09/01/2007 :  19:54:24  Show Profile
So now you have a rigid-hull-inflatable... with a sail! You might be on to something.
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Oscar
Master Marine Consultant

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USA
2030 Posts
Response Posted - 09/02/2007 :  17:51:56  Show Profile  Visit Oscar's Homepage
It's a sound transducer..there's a microphone on other end of the wire....they can hear everything you say. There is nowhere to hide.
Edited by - Oscar on 09/02/2007 19:45:08
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 09/02/2007 :  22:15:35  Show Profile  Visit Steve Blackburn's Homepage
You can have a chat with the whales with this.
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gnorgan
Admiral

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USA
563 Posts
Response Posted - 09/04/2007 :  22:43:37  Show Profile
Looks to be a fishfinder to me. It's glued to the hull so there won't be any bubbles under that white plate. Forward on the hull so that it can "look" forward and maybe see fish.
My guess is that the PO cut the wire (or disconnected it), stuffed the connection underneath somewhere near the place the fishfinder module was mounted, and took the fishfinder off the boat to be placed on another. Since the transducer was permanently planted, a new one probably was located for the next boat.
....but I do like the torpedo tube idea...it would come in handy while entering and leaving Mission Bay on our ocean sails
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
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