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Coastal Navigation Course
Chapter X

Answers to Mini-Chart #4 Lesson:

  1. You are at position 37 01.3' N and 076 0.3' W at 0900. You are on a course of 112 psc and you have a deviation of 2 W. Your speed is 5 kts. At 1015 you get a loran fix of 37 02.0 N and 075 53.6 W. Compute the following items:
    Set 010 T Drift 1.5 kts CMG 083 T SMG 5.2 kts
  2. At 1320 you are located at 36 58.7' N and 075 55.0 W. You are traveling at a speed of 6 kts on a course of 160 M. Your deviation is 2E on this heading. At 1430 you fix your position at 36 50.0' N and 075 55.0' W. Compute the following items:
    Set 233 T Drift 3.8 kts CMG 180 T SMG 7.4 kts
  3. The time is 1600 and your position is 36 55.6 N and 075 50.9' W. You are on a course of 250 T, speed 4 kts and your deviation is 2 W. At 1715 Rudee Inlet MOA light bears 200 M and the lookout tower just south of 36 55.0' N bears 310 M. Plot your two bearing fix and find the set and drift information.
    Your 1715 fix is 36 52.6' N, 075 56.3' W. Set 200 T Drift 1.1 kts CMG 240 T SMG 4.9 kts

    Use a fresh Mini-Chart #4 to practice plotting the following.

  4. At 1000 you are located at 37 02.0' N and 075 51.2' W. Your course is 205 psc and your speed is 7 kts. Your deviation is 5 W. At 1120 you get a fix by your GPS that shows your location of 36 54.0' N and 075 50.9' W. Calculate the following:
    Set 058 T Drift 1.7 kts CMG 178 T SMG 6.0 kts
  5. It is high noon and you are located at 36 50.2' N and 075 55.5' W. You are on a course of 350 M, your deviation is 2 E and your speed is 8 kts. At 1245 you get a fix of 36 58.2' N and 075 55.8' W. Compute the following items:
    Set 038 T Drift 3.9 kts CMG 358 T SMG 10.7kts
  6. At 1500 your position is 36 57.0' N and 075 58.9' W. Your course is 040 T. Your deviation is 3 E. Your speed is 5 kts. At 1615 you fix your position by a combination of ranges, bearings and depths that indicate that you are located at 37 00.' N and 075 56.3' W. Compute the following items:
    Set 220 T Drift 1.9 kts CMG 040 T SMG 3.1 kts

 

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