At 0914 you are in Chesapeake Bay southeast...

Question 1 of 2707066636eea28f7522a1c51a97f

At 0914 you are in Chesapeake Bay southeast inbound lane with buoy "CBJ" close aboard to port. What is your ETA at Thimble Shoal Channel Buoy "19" if you are making 10.9 knots?

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Question 1 of 27070

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At 0914 you are in Chesapeake Bay southeast inbound lane with buoy "CBJ" close aboard to port. What is your ETA at Thimble Shoal Channel Buoy "19" if you are making 10.9 knots?

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🔍 Key Concepts

• Speed–time–distance relationship: $Time = \frac{Distance}{Speed}$ • Understanding that 1 knot = 1 nautical mile per hour • Reading charted distance between buoy “CBJ” and Thimble Shoal Channel Buoy 19 in nautical miles

💭 Think About

• First, how will you find the distance between buoy “CBJ” and Buoy 19 on the chart, and in what units must that distance be? • Once you know the distance and your speed in knots, how do you calculate the travel time in hours, and then convert decimal hours to minutes? • After you get the elapsed time, how do you correctly add it to 0914 while watching for rounding (e.g., 0.3 hr vs 0.27 hr)?

✅ Before You Answer

• Verify the distance in nautical miles between the two buoys from the chart (don’t estimate by eye). • Check your speed in knots and keep it in the same units as distance (NM and knots). • After computing time, carefully convert decimal hours to minutes and then add to 0914 without making a carrying error over the hour.