USCG USCG NAV
Set 1 • Question #13 of 247
Launch Interactive Practice Room At 2342, on 25 August, you pass under the Helena Highway Bridge (mile 661.7 AHP). What has been the average speed of the current since departing Memphis Harbor, McKellar Lake, if you have been making turns for 9 mph?
A
5.6 mph
B
4.4 mph
C
2.1 mph
D
1.8 mph
✓ Correct Answer
USCG NMC Regulatory Explanation
Speed Over Ground (Speed Made Good) is determined by vector calculation combining vessel speed through the water with the current set and drift, resulting in: 1.8 mph.
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