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Worksheet 222 · Skill 1

Compass conversions

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  1. A magnetic course of 145°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  

  2. A bearing on the chart is 177°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  

  3. A bearing on the chart is 175°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  

  4. You are steering 029° by the steering compass. What is the true course?

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

    True course: ________ °T  

  5. You are steering 240° by the steering compass. What is the true course?

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

    True course: ________ °T  

  6. A bearing on the chart is 118°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  

  7. A bearing on the chart is 171°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. The steering compass reads 237°C. What is the magnetic heading?

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

    Magnetic heading: ________ °M  

Answer key

No.AnswersProblem
1Compass course: 139 °C
No. 222001 (worked solution)
2Magnetic bearing: 171 °M
No. 222002 (worked solution)
3Magnetic bearing: 171 °M
No. 222003 (worked solution)
4True course: 045 °T
No. 222004 (worked solution)
5True course: 251 °T
No. 222005 (worked solution)
6Magnetic bearing: 115 °M
No. 222006 (worked solution)
7Magnetic bearing: 160 °M
No. 222007 (worked solution)
8Magnetic heading: 231 °M
No. 222008 (worked solution)