USCG Exam PracticeLeeway allowance in plotting
According to Bowditch Ch. 23 §2301, which of the following is identified as a source of navigational error that can accumulate and must be checked against fixes whenever possible?
- A. The published tidal range for the port of departure
- B. The charted water depth at the vessel's position
- ✓ The assumption that the vessel has held the planned courseCorrect
- D. Magnetic variation listed on the chart
Why C is correct
Bowditch Ch. 23 §2301 identifies instrument error, observation error, plotting error, computation error, and the basic assumption that the vessel has held the planned course as sources of navigational error. Cumulative errors from these sources must be checked against fixes whenever possible.
Cited:Bowditch Ch. 23 §2301