At 0847 you take a round of bearings as...

Question 1 / 2066636ee928f7522a1c519089

Question 1 of 2066636ee928f7522a1c519089

At 0847 you take a round of bearings as follows:

Middle Ground Shoal Light 237°pgc Stratford Point Light 289°pgc New Haven Light 019°pgc

What were the set and drift since your 0820 position?

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Question 1 of 20

66636ee928f7522a1c519089

At 0847 you take a round of bearings as follows:

Middle Ground Shoal Light 237°pgc Stratford Point Light 289°pgc New Haven Light 019°pgc

What were the set and drift since your 0820 position?

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🔍 Key Concepts

• Set and drift are found by comparing your DR/EP position to your fix position over a known time interval • Use the current vector from the DR/EP to the observed fix to determine the direction (set) and speed (drift) of the current • Remember that bearings are pgc (per gyro compass); think about how you plot them and obtain a fix on the chart

💭 Think About

• After plotting your 0820 position and your 0847 fix from the three bearings, where is the fix relative to your DR/EP position at 0847 based on your ordered course and speed through the water? • Is the line from the DR/EP position to the fix pointing generally north or generally south, and how does that relate to a set of 000°T versus 180°T? • How far (in nautical miles) is it from your DR/EP at 0847 to your fix, and what drift (speed of current) does that distance over 27 minutes correspond to?

✅ Before You Answer

• Confirm the time interval from 0820 to 0847 in hours before computing drift • Measure the distance between DR/EP and fix accurately with dividers to get the current’s speed • Verify the direction of the DR-to-fix vector with a protractor/plotter to determine whether the set is toward 000°T or 180°T

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Question 1 of 20

At 0847 you take a round of bearings as follows: Middle Ground Shoal Light 237°pgc Stratford Point Light 289°pgc New Haven Light 019°pgc What were the set and drift since your 0820 position?

Set 360°T, drift 0.6 kt

Set 360°T, drift 0.3 kt

Set 180°T, drift 0.6 kt

Set 180°T, drift 0.3 kt

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Question 1 / 2066636ee928f7522a1c519089

Question 1 of 2066636ee928f7522a1c519089

At 0847 you take a round of bearings as follows:

Middle Ground Shoal Light 237°pgc Stratford Point Light 289°pgc New Haven Light 019°pgc

What were the set and drift since your 0820 position?

Back

Question 1 of 20

66636ee928f7522a1c519089

At 0847 you take a round of bearings as follows:

Middle Ground Shoal Light 237°pgc Stratford Point Light 289°pgc New Haven Light 019°pgc

What were the set and drift since your 0820 position?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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