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  NANTUCKET 190: Through-Hull Transducer

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Author Topic:   NANTUCKET 190: Through-Hull Transducer
art9234 posted 11-29-2004 08:34 PM ET (US)   Profile for art9234   Send Email to art9234  
I have a 2004 190 NANTUCKET. [Where can a through-hull transducer be mounted?] [Where can a salt-water wash down be installed?]
Whalerider posted 11-30-2004 06:30 AM ET (US)     Profile for Whalerider  Send Email to Whalerider     
Art, I have 2004 Nantucket and when I e-mailed Boston Whaler about a through-hull transducer the reply was "no provisions for one, a transom mount only."

--Mark

Sal A posted 11-30-2004 06:36 AM ET (US)     Profile for Sal A  Send Email to Sal A     
I seem to remember a drawing for a through-hull transducer in my red little bag. I will try to scan it, and see if I can get it onto this thread.
jimh posted 11-30-2004 07:10 AM ET (US)     Profile for jimh  Send Email to jimh     
[Moved from another forum. The POST-CLASSIC forum tries to concentrate on discussion of newer Boston Whaler boats, generally those first designed after 1990.]
jimh posted 11-30-2004 07:20 AM ET (US)     Profile for jimh  Send Email to jimh     
In the past, the option to install a through-hull fitting and pickup for a raw water intake was limited to "factory only" options. The reason for this is thought to be the concern for the hull warranty. Having the dealer or the owner drilling large holes in the hull and installing through-hull fittings could lead to problems if not done correctly. The concern is twofold: first, there is the potential for leaking water into the foam interior, and second, the location must be chosen carefully so as not to compromise the strength of the hull.

Also, the fittings used have to be long enough to traverse through the whole interior foam area.

I would consult with your dealer about the installation of large through-hull fittings on your Boston Whaler hull to see if they will have an effect on the warranty. A badly installed fitting, or one installed in an inappropriate place, could cause damage to the hull. The Unibond construction makes it more complicated than installing similar items on a conventional hull.

Really, I would not take a hole saw to a new boat without doing a little research.

In most cases, a through-hull transducer on a 19-foot boat is something exceptional. If the boat is to be used with a trailer, the location has to be chosen so as not to interfere with the trailer supports.

If the factory recommends against it, they probably have good reasons. In some larger models a special area is provided in the mold and lay-up specifically for installation of a through hull transducer.

lizabethie posted 11-30-2004 10:31 AM ET (US)     Profile for lizabethie  Send Email to lizabethie     
Hi Art, mounting the transducer through the hull was my first choice, but it turned out that things wouldn't work quite as I wanted. (I can't speak as to the official BW line on this, just from our personal experience.)

Mark (the captain) and I had gotten the baddest all-in-one Garmin our budget could afford (chart plotter/fish finder/depth reader, you name it...). Of course, after spending all this money, the transducer didn't come with it. So, we did what any self-respecting geeks would do - we went and bought the 5 or 6 transducer models we wanted to performance test out in the field. We weren't going to mount anything until we had decided which unit to keep, so we'd hook things up, hang them over the transom of the 190, and test the units for the veracity of their results. Testing all the units took about a day - I had to hie myself down the swim platform into cool LI Sound water in the early summer to give exact measurements of depth and any underwater activity. (Mark kept me in the water 10 feet away because I would possibly scare fish away, and then his results wouldn't be correct!)

Unfortunately, with all the testing going on, we found that my preferred approach of resting the transducer in the bilge well wouldn't work. Even the strongest, most accurate, (and only mid-priced) transducer wouldn't perform through the hull. After spending all this money on the boat, I didn't want to start putting holes in the hull. It didn't seem like there really wasn't any other way. Mark wanted to do it himself, but I called Surfside 3 and they took it for a day and ran the cables through the hull and everything. It has performed very well on the lowest part of the lower right transom. (Doesn't interfere with the functioning of the swim platform/ladder.) The propeller wash does skew the fish-finder results though.

Can't speak as to the wash-down, but good luck and let us know how that turns out.

-Beth

Whalerider posted 12-03-2004 07:24 AM ET (US)     Profile for Whalerider  Send Email to Whalerider     
lizabethie,

What transducer did you find worked the best for you?

Thanks,
Mark

lizabethie posted 12-08-2004 05:23 PM ET (US)     Profile for lizabethie  Send Email to lizabethie     
Hi Mark, I don't know the ID off the top of my head, but it is a Garmin. I'll take a look outside this week and let you know.
-Beth
art9234 posted 12-14-2004 10:33 PM ET (US)     Profile for art9234  Send Email to art9234     
Thanks for all the replies, i will go with the transon mount trans-ducer and tee-off the live well through hull to provide salt water washdown. I bought this Nantucket in sept.2004 and love it with thye 4cyl. 115. Enough speed, great economy.
bluewaterpirate posted 12-15-2004 02:57 PM ET (US)     Profile for bluewaterpirate  Send Email to bluewaterpirate     
A little late with the post but go to the Whaler Parts site it has good diagrams of your boat.

http://www.whalerparts.com/


Cheers

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