In viewing the liquid crystal display for the illustrated depth sounder data display unit, what should be done if the graphic display of the ocean bottom is no longer visible on the screen? Illustration EL-0186 Illustration EL-0186: the U.S. Coast Guard has not released this illustration.
Official USCG Answer & Rule Citation
Correct Answer: Option A — Increase the range adjustment.
Under USCG National Maritime Center examination standards, the accepted correct answer is: Increase the range adjustment..
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