Which best describes the difference between sounding and depth on a chart?

• A. Soundings are measured depths at the time of observation; depth is the vertical distance from the chart datum.
• B. Soundings are vertical distances from sea level; depth is distance below the surface.
• C. Soundings equal the maximum depth; depth is the minimum depth.
• D. Soundings are depths measured at low tide; depth is measured at high tide.

Answer: (A)