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- Master (Oceans or Near Coastal (Uninspected Fishing Industry Vessel)) »
- Q185 - Navigation Problems: Near Coastal
24. The propeller on a vessel has a diameter of 21.2 feet and a pitch of 20.0 feet. What would be the apparent slip if the vessel cruised 391 miles in a 24 hour day (observed distance) at an average RPM of 88?
The apparent slip is +6.2% because the theoretical distance based on the propeller pitch (approximately 417 nautical miles) exceeds the observed distance (391 nautical miles), resulting in a positive slip.
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