At 1950, your position is LAT 37°12.3'N,...

Question 1 / 2066636eea28f7522a1c51ac22

Question 1 of 2066636eea28f7522a1c51ac22

At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

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Question 1 of 20

66636eea28f7522a1c51ac22

At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

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🔍 Key Concepts

• Set is the direction toward which the current pushes your vessel, measured from the DR (dead-reckoned) position to the fix • Drift is the speed of the current, found from the distance between the DR position and the fix over the time interval • Use basic speed–distance–time: ( \text{Drift} = \frac{\text{Distance between DR and fix}}{\text{Time in hours}} )

💭 Think About

• First, plot or determine your DR position at 1950 using your course and speed from 1930 to 1950. Where would you be with no current? • Next, draw the vector from the DR position to the 1950 fix (37°12.3'N, 75°38.6'W). In what true direction does that vector point? • Measure the distance between the DR and fix, convert it to nautical miles, then divide by the 20‑minute interval (in hours) to find the current’s speed.

✅ Before You Answer

• Be sure you’re using the DR position at 1950, not the earlier position, when determining set and drift • Check that your set is expressed as the direction TOWARD the fix from the DR position (true bearing), not the opposite • Confirm your drift calculation: distance in NM ÷ (20/60 hr) and see which answer choice’s speed is closest to that value

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Question 1 of 20

At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

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330°T at 0.6 knot

330°T at 1.6 knots

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Question 1 / 2066636eea28f7522a1c51ac22

Question 1 of 2066636eea28f7522a1c51ac22

At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

Back

Question 1 of 20

66636eea28f7522a1c51ac22

At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed