At 0645, Watch Hill Point (left tangent) bears 316.5°pgc at 2.75 miles. What was the speed made good between 0600 and 0645?
• Use the basic speed formula: Speed = Distance ÷ Time • Convert 45 minutes into hours before doing your calculation • Understand how a bearing and range from a charted point let you find your 0645 position on the chart
• How would you find your exact position at 0645 using the given bearing (316.5° pgc) and distance (2.75 miles) from Watch Hill Point? • Once you plot the 0645 position, how can you determine how far you actually traveled from your 0600 position? • After you find the distance run, what do you get if you divide that distance by 0.75 hours and compare it with the answer choices?
• Make sure you are using nautical miles, not minutes of time, for the distance in the speed formula • Confirm that your time interval is 45 minutes = 0.75 hours • Carefully measure the distance between the 0600 position and the 0645 fix on the chart before doing the division
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