š Key Concepts
ā¢ Fuel consumption is usually proportional to time, not distance, for a given power setting
ā¢ First, find the fuel consumption rate in tons per hour from the initial voyage data
ā¢ Use that same hourly fuel consumption rate to find how long you can steam on the remaining fuel, then convert that time to distance at 17 knots
š Think About
ā¢ From the initial leg, what was your steaming time in hours at 21 knots, and how many tons per hour does that work out to?
ā¢ Once you know tons per hour, how many hours can you steam on 210 tons, and at 17 knots, how many miles is that?
ā¢ After you compute the distance, which of the choices is closest to your calculated value when rounded properly?
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Before You Answer
ā¢ Be sure you convert miles to nautical miles correctly if needed; remember that 1 knot = 1 nautical mile per hour
ā¢ Check your units at each step: hours, knots (nm/hr), tons/hour, and miles should be consistent
ā¢ Recalculate the fuel rate to ensure it is reasonable (not an extreme value) before using it to find the final distance