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Thread: Swordfish?

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  1. #1

    Default Swordfish?

    Hi All

    Do you think it is a swordfish on my sonar screen?
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  2. #2

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    I'm no sonar expert but I am going to make a guess no based on the length of the hit. Certainly its possible, but with what I expect would be the speed of the boat (either under power or at drift), it has to be a huge hit to stay on the depth finder that long. I'd say its more likely a school of fish that was hit with the sonar. I'm curious what everyone else thinks though.

  3. #3

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    My speed is 0.8 mile here. I generally set my speed 1 mile, do you think it s too slow for daytime swordfishing?
    Last edited by ksc; 03-07-2017 at 12:53 AM.

  4. #4
    Captains Club Pretender's Avatar
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    Could be your lead

  5. #5
    Captains Club Harry Klauber's Avatar
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    I'm with Pretender. Swords mark as a vertical red slash. Whatever is making the horizontal echo is moving at a steady speed at exactly the same depth and following the boat - don't think it has a tail and fins. Harry

  6. #6

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    Quote Originally Posted by Harry Klauber View Post
    I'm with Pretender. Swords mark as a vertical red slash. Whatever is making the horizontal echo is moving at a steady speed at exactly the same depth and following the boat - don't think it has a tail and fins. Harry
    I found another screenshot on internet, it shows the swordfish horizontal. Baits are on the ground and swordfish is a little up! Almost the same screenshot
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    Last edited by ksc; 03-08-2017 at 06:53 AM.

  7. #7
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    I don't know if this is helpful but if you were using a transducer with a 19 degree cone angle at 1700 feet you would be covering an circle of 500 feet on the bottom. At 2 knots, it would take a little over 2.5 minutes to travel over a stationary target.

    depending on your scroll speed you could figure how long that verticle mark might be, faster scroll speed, longer mark, slower scroll speed shorter mark.

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