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Thread: Boat Speed for SI

  1. 08-29-2016, 05:30 PM #1
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    Lonnie84
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    Default Boat Speed for SI


    What boat speed do you usual run when using Side Imaging? I figure slower is better but wondering what most people have found to be the best speed?
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  2. 08-29-2016, 06:37 PM #2
    Redge
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    3-5 mph for me. It just happens to be where my big motor likes to idle.
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  3. 08-29-2016, 06:52 PM #3
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    Quote Originally Posted by Redge View Post
    3-5 mph for me. It just happens to be where my big motor likes to idle.
    Yep same here.....actually seems like 4 mph is just right
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  4. 08-29-2016, 07:52 PM #4
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    SI chart speed 3 and boat speed 3-4 mph.
    Be safe and good luck fishing
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  5. 08-29-2016, 08:49 PM #5
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    I've seen SI images from as high as 40mph (with not much detail) ...

    I get good results even down to "real slow" ...

    Match Chart Speed to boat speed ...







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  6. 08-30-2016, 10:12 AM #6
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    My boat won't go 40 mph. However, my transducer is bolted to the bottom of my boat (got rid of rooster tail and engine blockage issues) and I git some good looks at 20mph. Rough water, well it is a different story.
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  7. 08-30-2016, 10:18 AM #7
    ibmack
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    Quote Originally Posted by rnvinc View Post
    I've seen SI images from as high as 40mph (with not much detail) ...

    I get good results even down to "real slow" ...

    Match Chart Speed to boat speed ...







    Rickie
    why would you ever scan on 455?
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  8. 08-30-2016, 01:15 PM #8
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    455 has more coverage than 800 .... the strength of the 800 Khz signal dissipates a lot quicker than 455.
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  9. 08-30-2016, 05:13 PM #9
    ibmack
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    hmmm, you mean wider angle to the sides, or what?
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  10. 08-30-2016, 07:37 PM #10
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    Quote Originally Posted by ibmack View Post
    hmmm, you mean wider angle to the sides, or what?
    Yes 455kHz has more range - with less detail = better for seeing all the way to the edge of the display ...

    800kHz has more detail - with less range = better for discerning stuff right under the boat ...

    I use each - for what it does best - (dependent on if I want to see detail under the boat ... Or if I want to find stuff farther away from the boat) ...

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