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- Q135 - Navigation Problems: Oceans
657. You are on a voyage from Belem, Brazil to Mobile, AL. The distance from departure to arrival is 3150 miles. The speed of advance is 14.0 knots. You estimate a layover in San Juan, Puerto Rico, of 17.5 hours. If you took departure at 2200 (ZD +3h 30m), 26 February, what was your ETA (ZD +6) at Mobile?
The voyage requires 225 hours of steaming and 17.5 hours of layover, totaling 242.5 hours. This equates to 10 days and 2.5 hours. Accounting for the time zone difference of 2.5 hours westward, the ETA at Mobile is 2200 on 8 March.
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