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  #1  
Old 04-27-2010
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Depth Sounders: Plastic Thru-hulls??

I am currently shopping for depth sounders for my soon to be new boat (H285).

I am looking at replacing the existing depth and knotmeter with new equipment. As I look at the new instruments on the market, it seems as though the thru-hulls for the depth and knotmeter are plastic. Is this a safety issue? I have always read that plastic below the waterline is a big no-no.

Also, what are your thoughts on Nasa Clipper wind system and Nasa Clipper depth and knotmeter? It seems that they are priced right for my budget.

Thanks,
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Old 04-27-2010
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The through-hulls aren't plastic, they're Marelon IIRC, which is perfectly suitable for through-hulls and transducers.
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Old 04-27-2010
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In my boat I have half a large japanese glass fishing float filled with oil or water sealed to the hull. The transducer is in there. PO put it in, works great.

Consider that before getting out the hole saw.
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Old 04-27-2010
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Knotmeter kind of has to be in the water...doesn't work too well if it's not in the water.
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In my boat I have half a large japanese glass fishing float filled with oil or water sealed to the hull. The transducer is in there. PO put it in, works great.

Consider that before getting out the hole saw.
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Old 04-27-2010
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Funny how a smart-ass comment is made right with a little smile, eh?
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Old 04-27-2010
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Wasn't meant to be a smart-ass comment. The OP was asking about BOTH a knotmeter and a depthsounder transducer, which Tager's post wasn't suited to addressing.


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Funny how a smart-ass comment is made right with a little smile, eh?
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You're the best, Sailingdog. Your technical insights are top notch and have saved my tail bunch of times. Just yankin' your houser.

Heed the advice, Manhattan8, Sailingdog knows his stuff.
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Old 04-29-2010
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I never said anything about the knotmeter.
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Old 04-29-2010
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Thanks for all of your help. you will see me posting around here a little more since I am somewhat of a newbie when it comes to sailing and I will be taking delivery of my boat later in May.
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