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Galvanic metal detection

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  • Galvanic metal detection

    Helo,
    Have anybody some knowledge or tried to sense galvanic electric currents to detect any metal by means of electrosis in salt water?
    Here,inside the small yacht harbour there is a steel sunken ship with a lot of steel scatered over the bottom. The protective zinc electrodes corode much more fast then in the open sea.
    Is it resonable to sense the current or voltage beteewn zinc and iron electrodes over board to dectect on mid range?
    This ideia may be stupid and on that case excuse me the time I take from you.
    Thanks.
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