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Where to mount structure scan on inboard single?

Old 07-17-2014, 07:23 PM
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Default Where to mount structure scan on inboard single?

I'm trying to decide where to mount a structure scan transduce to the bottom of my seavee inboard.

I thought about just in front of the shaft log on the keel, but worried about hitting it when loading it on the trailer.

I figured mounting on the transom just aft of the rudder is a bad idea, with turbulence.

Maybe on a chine, but after talking to the BOE tech it need to be in the middle or you might not get a view of both sides.
Old 07-17-2014, 07:40 PM
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Ive been trying to figure this out for my twin inboard boat. The only option I see to get a good reading is to go with a dual thru hull side scan transducers. like these. http://www.westmarine.com/buy/lowran...pair--14078091
Not sure what brand unit you have though.
Old 07-18-2014, 03:19 AM
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I trying to figure same thing out on my 30' Pursuit inboard. Right now I already have 2 thru hull traditional transducers and I will be adding a CHIRP this fall. With all the other thru hulls (water pick ups, etc....) I just don't have any place to put 2 more thru hulls. I was hoping to get away with the transom mount as long as it works at trolling speeds, But where do I put a transom mount??
Old 07-18-2014, 03:23 AM
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Looks like I'm not alone.
Old 07-18-2014, 05:52 AM
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I did twin through hulls for StructureScan on my last boat, which was a single screw inboard diesel with a lot of deadrise up front. It worked very well.

Planning to do the same with GCV10 this winter on a new to me 26' Shamrock tarpon boat.
Old 07-18-2014, 07:55 AM
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Originally Posted by Salmonbum View Post
I trying to figure same thing out on my 30' Pursuit inboard. Right now I already have 2 thru hull traditional transducers and I will be adding a CHIRP this fall. With all the other thru hulls (water pick ups, etc....) I just don't have any place to put 2 more thru hulls. I was hoping to get away with the transom mount as long as it works at trolling speeds, But where do I put a transom mount??
How are the current thru-hulls mounted? i.e. angled fairing block, pad, pockets or are they "mushroom" with angled elements?
Old 07-18-2014, 08:01 AM
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With a fairing block you can cut to match the angle of deadrise.
Old 07-18-2014, 08:05 AM
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Originally Posted by jetpilot View Post
With a fairing block you can cut to match the angle of deadrise.
Exactly and the Bronze TH SS ducer comes with a fairing block (well the Simrad/Lowranceone does), unless your boat has pockets like a lot of the Grady Whites (the blocks won't fit in the pockest w/o a lot of modification, I mean a lot) the fairing blocks should be an easy solution for you guys
Old 07-18-2014, 08:27 AM
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Originally Posted by mahimahi99 View Post
How are the current thru-hulls mounted? i.e. angled fairing block, pad, pockets or are they "mushroom" with angled elements?
Two 744's with HS fairing blocks mounted in front of motors mid-ship, just behind tranny's before shafts enter water I have 3 thru hulls (water pick ups) on each side. Only real 2 spots I have left are about halfway between these two spots, just off keel. I have a small access in floor, this is where I will mount B150. I do not have good access to mount anything under motors far off keel, as well as they would be inline with B744's. I could possibly mount the new Garmin Side Scan outside the three water pickups, closer to outside edge of boat??

I'm concerned a transom mount would be OK one way, but the side scan thru the prop was would suck.
Old 07-18-2014, 01:40 PM
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Salmonbum, couple more questions. So you plan on keeping the 744's? if so why, if you're adding CHIRP? If you're not then I would suggest getting the Twin Thru Hull Side Vu transducer set up and put them in the 744's spots and then add the B150 where you plan on putting it. If you are keeping the 744's then put the B150 in the planned spot and what about putting the side vu transducer on the keel? here's a pic of what I did with a Mako with twins (outboards), it's right on the keel - unless you don't have access. I'm afraid that a transom mount won't work good, if you had a single I'd say yeah do it but keep it far Starboard and away from the inline of any strainers
Name:  StructureScanThruhullandB744V-1.jpg
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Old 07-18-2014, 07:30 PM
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I want to keep the 744 for a few reasons. One of them goes to upper station. It is rarely used so I I would rather spend the money in upgrading lower helm stuff. I also want to keep a b744 going into lower helm setup for a backup ducer as well as to compare to the chirp. And regardless if I put the garmin side vu ducers in their place, i would need to glass the holes closed since the garmin uses much smaller holes. Having to do that is even more money, but I want to watch what I spend as I may only keep this boat another yr or so.

I was thinking about the keel mount idea for side vu, but I dont think the access area I have is big enough for that and b150.

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