Your vessel has consumed 1087 bbls of fuel after steaming 2210 miles at a speed of 10.75 kts. What is the maximum speed you can steam for the last 1000 miles of the voyage on the remaining 725 bbls, if you estimate 3% of the fuel is not usable?
• Fuel consumption rate in barrels per hour based on the first leg of the trip • Relationship between speed, time, and distance to find hours run • Adjusting usable fuel by removing 3% as non-usable before calculating the new speed
• How can you use the miles steamed, speed, and fuel burned so far to find a fuel consumption rate per hour? • Once you know barrels per hour, how do you convert the remaining usable fuel into total hours you can run? • With the total hours available and 1000 miles left, how do you rearrange the speed-distance-time formula to solve for speed?
• Be sure to subtract 3% of 725 bbls to get usable fuel before any rate calculations • Confirm your fuel-consumption rate is in bbls per hour, not per mile, and apply it consistently • After finding the maximum speed, check that the implied total fuel used for the last 1000 miles does not exceed the usable fuel remaining
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