Should I Use an in-Hull, Thru-Hull or Transom Mount Transducer With My New Chartplotter?
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- Опубликовано: 22 май 2024
- "Hi Jeff, I just purchased a new chartplotter and have to install a new transducer. Should I go with a thru-hull on an in-hull? Also, Should I have two transducers on board?"
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Wickedly helpful RUclips channel. Has answered a lot of my long lingering questions and answered many that I did not think about.
Thanks Borys, really appreciate it and your feedback as well.
didn't know about different frequencies for different transducers, interfering with each other. thanks.
Informative video - thanks. I love my in-hull transducer (Raymarine P79 mounted in the lazarette of our Camano 31). I was very hesitant about going in-hull for all the reasons you mention, but this unit operates just as well as my old transom-mount transducer. The soundings are all very solid and very accurate. The only "issue" I have is that I can't read the bottom underway when depths are >500' @ 8 knots, but many transducers won't read in that environment anyway. The benefits of not punching holes in my hull and zero maintenance were very appealing to me. Not having to clean the transducer in the water after it gets fouled with growth/muscles is a real benefit.
Hi W B, thanks for sharing.
Thanks, I always learn something new.
Glad to hear it!
I bought an Axiom RV MFD w/ RV-100 transducer. My old Lawrence sounder used an "Thru Hull" transducer and using SeaTalk is compatible with the Axiom. Being that I have an inboard boat with twins takes transom mount out of the equation. At first, I connected the old Lawrence transducer, and it worked but didn't have the clarity and functions of the RV chirp transducer, so I prepped my hull down in the bilge, boxed off an area using a PVC 12" electrical box, and installed the RV-100 transducer using epoxy. I was amazed at the difference form the Lawrence, and the ONLY issue is the temperature reads wrong.. I can live with that. Your assessment that "shoot through the hull" will yield "Marginal results is inaccurate. as long as your hull is not cored, and you make sure there is no air bubbles when installing, shoot though the hull works perfectly..
Thanks for sharing Patrick.
Does thru hull transducers read deeper and clearer than the other types? Awesome video Thank you!
I have a Robalo R222 that came with a Garmin 742XS/Airmar B619 transducer through hull. I just bought a Garmin 943XSV that supports Sidevu. I bought a Transom mounted G56UHD-TM but am being told that the GT56HUD-TH Thru Hull is better. First problem is I would have to leave the Airmar B619 in due to hole dimensions being different. Airmar had a 2.94" hole. New one is 1.3/16. Second is it true that you would need two of these transducers for Sidevu to work properly due to the bow angle being great then 5 degrees? That the transducer would not be able to see the Port side of the boat? Thank you for your help
I have a question about in hull signal resolution. I have an older Lowrance Fish Finder/GPS unit that I'm replacing the transducer on. Apparently the old transducer was the issue and I'm amazed at how much the signal has improved and how much information is returned about bottom conditions testing out the old transom mount. I'd prefer the cleaner installation of an in hull mount, but I like the ability to see what bottom conditions are like for anchoring etc. Would in hull mounting be able to distinguish between a muddy bottom and gravel the way a transom mount seems to?
Hmmm, not sure.
i have a fast trimaran. It is a cored boat. The inner and outer skin are probably an 1/8th of an inch. I bought a Simrad and want to install in-hull. My plan is to carefully open up a big enough cavity ...but not penetrate the outer fiberglass skin.. I am hoping for a good signal through such a thin skin. Any thoughts, Sir?
Never heard of someone doing that, would recommend getting approval from builder or expert on hull strength when removing one skin layer and the core.
Any idea if you can install a thru hull B75M or B175M and so on, through a stern drive(hull), I/O 5.7L 20 foot boat?
I am worried about the interference from the engine. I have looked and looked and cannot find any info on it. I presently have all of them mounted on my transom.
Good question, IMO it should work just make sure the through-hull is forward of the stern drives.
Will the depth be accurate when I heel my Catalina 22 sailboat? I'm looking to add an entry level chartplotter to this boat. Any suggestions as to unit/transducer? Thx
Hi Hans, great question, but not aware of any depth transducer that is gimballed to stay level on all angles of keel. Your correct, when heeled our transducers are not measuring the correct water depth directly below our boats.
This may be a dumb follow-up, but why does the amount of signal matter? Doesn't shallow water only matter? And in that situation, won't the signal be enough? Why does it matter if the deep water doesn't show, since it's deep.
Some boaters, really don't like "losing" bottom. Also, for fishing, it's quite important. To me once the waters are over 200 -300 feet, I don't care that much about depth.
💯
Thanks Javier.
It's interesting to hear you say that in-hull transducers are the "worst" when the representatives at Garmin HIGHLY recommend them to anyone with a jet boat
The thinner the hull the better, also the shallower the water the better for in-hull transducers.
I have three thru-hull transducers on my boat. I wouldn’t do it any other way.
No doubt, provides the best accuracy.