🔍 Key Concepts

• Use the speed–distance–time relationship: 15 nautical miles at 12.5 knots to find time en route • Convert your departure time at the sea buoy into an arrival time at the dock area, using the same local time scale shown on the current tables • From the lower current graph (ACT6706), determine whether the current is flood or ebb at your arrival time, then match the approximate current speed and the mean flood/ebb direction

💭 Think About

• First, how long (in hours and minutes) will it take you to steam 15 nm at 12.5 knots? Be sure your units match. • Once you know your time en route, what exact clock time (on 10 November) will you be near the dock? Find that time along the bottom axis of the lower current graph. • At that time on the lower graph, is the curve above or below zero (flood vs. ebb), and roughly what speed does the vertical axis show? Which answer choice has that speed with the correct flood/ebb direction for ACT6706?

✅ Before You Answer

• Confirm you are using ACT6706 (Lower Town Creek Reach) for the final current, not the sea-buoy station ACT6611. • Verify your computed arrival time actually falls on 10 November 2023 and lines up correctly between the tick marks on the time axis. • Check that the direction you select matches the mean flood or mean ebb direction listed in the heading for ACT6706, and that the speed you pick matches the graph at that time to within about 0.1–0.2 knots.