Question 104Electricity & Electronics - 1st Asst/Chief

The correct answer is A) Increase the range adjustment. If the graphic display of the ocean bottom is no longer visible on the screen, it likely means that the range setting is set too low, not allowing the depth sounder to detect the full depth of the water. Increasing the range adjustment will expand the display to show a wider depth, which should bring the ocean bottom back into view on the liquid crystal display. The other options are incorrect because decreasing the range (B) would further reduce the displayed depth, decreasing the gain (C) would reduce the sensitivity of the depth sounder, and increasing the gain (D) would not address the issue of the limited range setting.