Multiple transducers

Raider Ronnie

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traditions

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Some transducers can be mounted on the inside of the hull.I have done this before for a few people and they work fine.I made a box out of fiberglass and glassed it to the hull,filled it with mineral oil.Made one out of 6 inch pvc pipe and put the ducer in a pipe plug and screwed it in the top.Some thing to consider,they work fine as long there is no air betweeen the ducer and the hull,or if you have a cored hull.We had a old eastern rig that had a ducer under the engine and it shot thru at least 20inches of solid oak.Also you must have to different freq.to operate two machines
 

F/V First Team

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Just yank the core out and fill it with solid glass, easy peasy.
pft, cored boats.

We beam through the hull with everything that we do unless the owner absolutely demands it.
 

petrel

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I would be keen to see any photos of various beam-through rigs. I've got a big bastard of a transducer that I need to use for a research job and if we could make it work inside the hull that would be sweet. The speed we are going to be working at precludes a pole mount, so this might be the ticket.
 

F/V First Team

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Damn pole mounts, I remember the last NOAA job I did.

Like a giant aluminum dild....erm... "marital aid" hanging off the side of the boat. Made a great lobster trap magnet it did, so many different buoys...
 

petrel

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Travis,

What kind of transducer did they have on it?
 

petrel

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Yes, that is pretty straightforward. It's made to assemble. We've got a bit of a project on our hands. And it would be a much bigger box...
 

petrel

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This one's not that big thankfully, but its way bigger than the one for my 1000 watt machine.
 

Raider Ronnie

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tunaorlater

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How about installing a normal thru hull transducer into the hull? It takes some work but works very well. Just cut the hull in the shape of the ducer, then you have to make a fiberglass box that gets glassed into the inside of the boat. I built a ducer out of wood then glassed over it after covering with wax paper, popped it out and glassed it inside. Kind of hard to explain but it's like putting the fairing block inside the boat rather then under it. It works very well and no drag.
 

steveinak

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A bunch of replies, but no one replying to my original question :rolleyes:

Travis, that yellow tank is an Airmar M260, to the best of my knowledge they don't make that tank in 1K wide angle, if they did I would install one.
I have a B260 now.
Awesome for deep water as both the M260 & B260 are narrow beam, 6 degrees @ 200 & 19 degrees @ 19 degrees.
Not so great for shallow water
I'm planning to add a 2nd ducer but wide angle which is much better for shallow water.
My options as told to me my a girl @ Airmar a SS270w which is a wide angle (25 degrees @ both 50 & 200) or go down to a 600 watt instead of a 1K
Back to my original question, how will it effect the boat having 2 of those big blue fairing blocks hanging below the boat, 1 stb & 1 port ?
I just bought one of those yellow tank ducers for my Furuno 292, now i hope i can see a shrimps antennae's in 100+ fathoms :p. It will be interesting to see the difference in sounders, the boat came with a Furuno 7000 combo gps/plotter/sounder, sounder seemed to read fine i just couldn't see the small screen :D.
 

cb34

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Raider ron

I had both a B260 and a 270w. The B260 out performed the 270 even in shallow water . I had one outside the hull in their fairing and one inside the hull in a box I made. I even interchanged them and the B260 out performed the 270 even when it was inside the hull. I would never mount either of them outside if I do it again.
 

Raider Ronnie

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