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Worksheet 644 · Skill 1

Compass conversions

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  1. The steering compass reads 100°C. What is the magnetic heading?

    Give whole degrees (000 to 359). This one must be exact.

    Magnetic heading: ________ °M  

  2. The course laid off on the chart is 318°T. What do you steer by the steering compass?

    Give whole degrees (000 to 359). This one must be exact.

    Compass course: ________ °C  

  3. A magnetic course of 015°M is wanted. What do you steer by the steering compass?

    Give whole degrees (000 to 359). This one must be exact.

    Compass course: ________ °C  

  4. You are steering 075° by the steering compass. What is the true course?

    Give whole degrees (000 to 359). This one must be exact.

    True course: ________ °T  

  5. The course laid off on the chart is 080°T. What do you steer by the steering compass?

    Give whole degrees (000 to 359). This one must be exact.

    Compass course: ________ °C  

  6. You are steering 177° by the steering compass. What is the true course?

    Give whole degrees (000 to 359). This one must be exact.

    True course: ________ °T  

  7. A bearing on the chart is 309°T. What is it magnetic (for a hand-bearing compass, which is taken to have no deviation)?

    Give whole degrees (000 to 359). This one must be exact.

    Magnetic bearing: ________ °M  

  8. You are steering 206° by the steering compass. What is the true course?

    Give whole degrees (000 to 359). This one must be exact.

    True course: ________ °T  

Answer key

No.AnswersProblem
1Magnetic heading: 104 °M
No. 644001 (worked solution)
2Compass course: 308 °C
No. 644002 (worked solution)
3Compass course: 013 °C
No. 644003 (worked solution)
4True course: 093 °T
No. 644004 (worked solution)
5Compass course: 099 °C
No. 644005 (worked solution)
6True course: 195 °T
No. 644006 (worked solution)
7Magnetic bearing: 307 °M
No. 644007 (worked solution)
8True course: 214 °T
No. 644008 (worked solution)