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Thread: Multiple depth sounders - what's your view?

  1. #1
    Join Date
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    Default Multiple depth sounders - what's your view?

    Possibly launching a debate

    Having seen an old post on another forum:
    I fitted a B&G depth and a Simrad fishfinder. The B&G will display both. So I have port and starboard depth displayed if I want.
    I wondered if you find this possibility a useful feature...


    If so what equipment do you use to display it? The option to see both depths displayed on one screen does seem logical
    Last edited by djeeke; 2nd July 2017 at 02:52 PM. Reason: typo
    1979 Catalac 8M - 8-84 - Galu'Lati Go

  2. #2

    Default Re: Multiple depth sounders - what's your view?

    Yes, I have 2 depth sounders, one in each hull. But my cat is 8.5m wide. I only use the second one in confined waters rivers or dredged channels etc. Don't see any point in having them displayed on the same screen.

    Depending on the separation and the depth there could be interference between the transducers that may lead to strange results.

  3. #3
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    Default Re: Multiple depth sounders - what's your view?

    Hi Peter,

    Thx for your reply

    Yes indeed confined waters rivers / dredged channels seem the areas where this setup could be useful, one hull might get close to grounding where the transducer in the other hull still reads a very safe depth...

    From what I read to avoid interference with both depth sounders active different frequency transducers are the best option...
    1979 Catalac 8M - 8-84 - Galu'Lati Go

  4. #4
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    Default Re: Multiple depth sounders - what's your view?

    I have had two identical sounders, one in each hull, in two cats dating back 27 years. They never interfered with each other. I suspect the impulse and return are measured in such a tiny fraction of a second, that there is no confusion with any other signal nearby.

    In shallow water this system is invaluable. Turns a negative of a cat--can't heel to get loose, or pivot 180* to get out-- into a positive.

  5. #5

    Default Re: Multiple depth sounders - what's your view?

    I have a normal depth sounder in one hull, and a forward looking sonar in the other.

  6. #6
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    Default Re: Multiple depth sounders - what's your view?

    Quote Originally Posted by ggray View Post
    In shallow water this system is invaluable. Turns a negative of a cat--can't heel to get loose, or pivot 180* to get out-- into a positive.
    1979 Catalac 8M - 8-84 - Galu'Lati Go

  7. #7
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    Default Re: Multiple depth sounders - what's your view?

    That is the spec we are going with.

  8. #8
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    Default Re: Multiple depth sounders - what's your view?

    Quote Originally Posted by 44C View Post
    I have a normal depth sounder in one hull, and a forward looking sonar in the other.
    That's the spec we are going with.

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