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Sonarhub and others with B744v

Old 10-12-2014, 07:37 AM
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Default Sonarhub and others with B744v

I am working on a project boat that the previous owner glassed in a furuno version of a B744v. He originally had the transducer connected to a 585. When I say glassed in I mean glassed in. It looks like I will need to take a hammer and chisel to it to get that puppy out. Anyway, I need to throw some electronics on this hull and I am not looking for anything super fancy...yet. I am also not looking to deal with that transducer just yet as there are plenty of other areas on the boat that need will need my attention. With that said, was thinking of an HDS9M touch with the sonic hub. Could the sonic hub work with the 744v at all? Will I get similar or better performance than the Furuno GP1870F?

My other thought was to use the GP1870F which almost seems like a no-brainer given the furuno version of 744v in there. The problem with the GP1870 is the use of Cmap. Once I purchase the Cmap chips I will need, the total overall price will bring me close to the price HDS9m sonar hub setup. I can then simply use the built in charts insight of the 9m and the already owned navionics platinum plus charts I have.

Any thoughts on this or any other option I may not have thought of? My budget for this initial install is ~1K. The givens are:
1. The 744v is very firmly attached to the hull.
2. I already own and like Navionics platinum plus.
3. I would like to be able to expand the system to full chirp at some point in time when I am ready to chisel out that ducer.

The boat is a Sea Cat SL5 and will be fishing mostly to 400' with a mixed bag of bottom fishing and inshore tuna.


Last edited by BrownEyedGirls; 10-12-2014 at 05:56 PM.
Old 10-12-2014, 09:15 AM
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I'm assuming it's SonarHub, not Sonic Hub which is an entertainment system you are considering.

Yes, SonarHub will work with your B744V, in case your current transducer don't have a mix & match connector you will have to cut off the Furuno connector and splice in a Lowrance pigtail connector. If you have a connector pair 10' from the transducer then you have mix & match and only need to replace the cable going from this connector with the Lowrance version.

I've had Furuno FCV-620 and 627 and I have HDS and HDS Touch and I like both brands, I have a difficulty saying which is best. They are different, but both very good. SonarHub is better than the built in HDS sounder also for fixed frequencies so getting a HDS with SonarHub sounds like a good idea. You will then also be prepared for later changing to a CHIRP transducer.
Old 10-12-2014, 06:14 PM
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Thank you Abbor, Yes you are correct, I did mean sonar hub. I have just edited my first post to reflect that.
I am glad to know that the sonar hub will work with the b744v. I have cut and spliced ends on ducers before so that is no problem. I do wish someone could comment on which was better. For some reason I get the feeling the GP1870F will do a better job as it is my understanding that it has the same fishfinder as the 587 built in and the 587 is supposed to be a really good tone pulse sounder that was designed for a ducer like b744v.

Any other good short term options anyone
Old 10-12-2014, 06:41 PM
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A main point of yours was wanting to stay with the Charts you already own...and being that you are using a single element 600 watt B744....both the Lowrance and the Furuno will be almost equal in overall sonar performance.
Both will give you good performance with the B744.

If you had a multi element 1 kw transducer then the GP1870F with its 1 kw may have a positive there.
But you have a B744...I would go with the Lowrance and use your existing charts.

And many of my GP1870F customers have noted they like the sonar... but not the most intuitive chart to use etc.
Old 10-14-2014, 05:00 PM
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Thanks Gil, That is just what I was looking for. The Lowrance setup will be more $ upfront but then I can build upon it where the Furuno would have been sold as soon I am ready to chisel out that ducer. Now to see what new sizes/ prices Garmin will announce on the first.
Old 12-28-2016, 03:40 PM
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If your 744 has a clevis pin to hold the speed insert it is and old version. The newer ones use a nut. Call Airmar with the part number from the attached tag. They will tell you if the unit will provide all the functionality with your MFD. A raymarine B744 has a different resistance than a Simrad version and you will lose the speed and temp, even if you change plugs.
You can force the ducer out of your hull if you need to change it. Just remove the speed incert and make a puller out of a threaded rod and some washers.. Just cut the glass around the edge of the ducer head.

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