At 0119, on 10 September, you pass...

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Question 1 of 2066636eea28f7522a1c51a7d3

At 0119, on 10 September, you pass Springfield Bend Lt. (mile 244.8 AHP) and estimate the current will average 2.5 mph for the remainder of your trip. What is your ETA at the mouth of the Ohio River if you are making turns for 8.5 mph?

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Question 1 of 20

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🔍 Key Concepts

• Speed Made Good (SMG) when affected by current (adding or subtracting current from engine speed through the water) • Distance on the river in statute miles between Springfield Bend Light (mile 244.8 AHP) and the mouth of the Ohio River (mile 0) • Converting total travel time in hours to a clock time and calendar date from a given starting time and date

💭 Think About

• First, determine how many miles you still have to travel from mile 244.8 AHP to the mouth of the river; think about how river miles are numbered. • Figure out your actual speed over the ground: how does a 2.5 mph following current affect a vessel making turns for 8.5 mph? • Once you know the distance and the effective speed, compute the travel time, then carefully add that time to 0119 on 10 September and see which choice matches.

✅ Before You Answer

• Be sure you are using statute miles and mph (not nautical miles and knots) because these are inland river miles. • Confirm whether the current is helping or opposing your movement downbound before adding or subtracting it from 8.5 mph. • Double-check your time and date addition, especially when crossing midnight and possibly more than one day.

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