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- Q393 - Navigation Problems: Chart Plot
68. At 1019, on 10 March, you pass under the Greenville Bridge mile 531.3 (AHP). What was your average speed since departing the docks at mile 173.0 (AHP)?
The average speed is calculated by dividing the total distance (358.3 miles) by the elapsed time (49.75 hours), resulting in 7.2 mph.
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