To predict the actual depth of water using the Tide Tables, the number obtained from the Tide Tables is __________.

Correct Answer: Option D — added to or subtracted from the charted depth

According to Bowditch (The American Practical Navigator), the height of tide obtained from tide tables represents the height above or below chart datum. Therefore, this value must be algebraically added to or subtracted from the charted depth to determine the actual water depth.