Answers to Deviation Practice Lesson

Coastal Navigation Course
Chapter VII

Answers to Deviation Practice Lesson

True

Variation

Magnetic

Deviation

Compass

1. 152°

5° W

157°

7° W

164°

2. 190°

4° W

194°

5° E

189°

3. 162°

1° E

161°

6° W

167°

4. 098°

10° W

108°

4° E

104°

5. 265°

8° E

257°

19° W

276°

6. 345°

4° W

349°

4° E

345°

7. 138°

3° E

135°

12° W

147°

8. 196°

3° W

199°

13° E

186°

9. 355°

2° W

357°

2° W

359°

10. 222°

4° E

218°

16° W

234°

In real life, if you calculate deviations in excess of 5° either east or west, you should first try to find the source of the unusual deviation. If it can’t be remedied by removing the source, have your compass compensated to correct for excessive deviation.

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