Your 0745 ZT 15 July position is LAT 29°04.0'N, LONG 71°17.5'W. You are on course 165°T, and your speed is 8.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1130 running fix?
• Dead reckoning (DR) position computation between 0745 and 1130 using course and speed • How to convert elapsed time to distance run at a given speed • Relationship between movement in latitude and longitude when steaming on a southeast-ish course (165°T)
• From 0745 to 1130, how many hours have elapsed, and how many nautical miles would you travel at 8.0 knots in that time? • On a course of 165°T starting at 29°04.0'N, 71°17.5'W, will your latitude increase or decrease, and will your longitude get larger (more W) or smaller (less W)? • Which answer choice best matches the DR position you would expect before applying the morning sun lines to get the running fix?
• Be sure your time interval from 0745 to 1130 is correctly converted to hours and tenths of an hour before multiplying by 8.0 knots • Double‑check the sign (N/S and E/W) of the changes in latitude and longitude based on the 165°T course • Confirm that the selected choice is consistent with a reasonable DR track from the starting position: generally southward and slightly eastward or westward as appropriate for 165°T at that longitude
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