At 0112, the radar range to Branford Reef...

At 0112, the radar range to Branford Reef...

Question 1 of 29218fork_9b47ecd8798d4629850

At 0112, the radar range to Branford Reef Light is 2.9 miles. At 0125, the range is 3.6 miles. What is the position of your 0125 running fix if you are steering 124°T at 12 knots?

Question 1 of 29218

Q

At 0112, the radar range to Branford Reef Light is 2.9 miles. At 0125, the range is 3.6 miles. What is the position of your 0125 running fix if you are steering 124°T at 12 knots?

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🔍 Key Concepts

• Running fix using radar ranges to a single object • Using speed, time, and distance to find how far you have traveled between two observations • Transferring an earlier line of position (LOP) along the vessel’s track to the later time

💭 Think About

• First, compute how far the vessel travels between 0112 and 0125 at 12 knots. How many hours is that time difference, and what distance does that give you? • On your chart, how do you construct a running fix when you only have ranges to one object (Branford Reef Light) at two different times? Think about range arcs and moving the first LOP along the course line. • Once you plot the 0125 running fix, which answer choice has latitude and longitude closest to that plotted point?

✅ Before You Answer

• Be sure you convert 13 minutes into hours correctly before using the speed–distance–time formula. • Confirm you are advancing the earlier LOP forward along 124°T, not backward. • After plotting, double-check which side of Branford Reef Light your fix lies on and compare that with the lat/long of each choice before deciding.