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Answers to TVMDC Practice Lesson

Chris Riley by Chris Riley Updated on August 16, 2019. In navigation

Coastal Navigation Course
Chapter VII

Answers to TVMDC Practice Lesson
Remember: Going from True to Compass Add West and Subtract East
Going from Compass to True, Subtract West and Add East

True

Variation

Magnetic

Deviation

Compass

1. 070° 5° E 065° 0 065°
TVMDC + W – E – 070 – 5 = 065 +/- 0 = 065
2. 097° 2° E 095° 3° W 098°
TVMDC + W – E – 097 – 2 = 095 + 3 = 098
3. 236° 1° W 237° 3° E 234°
CDMVT – W + E – 234 + 3 = 237 – 1 = 236
4. 080° 4° E 076° 3° W 079°
CDMVT – W + E – 079 – 3 = 076 + 4 = 080
5. 178° 3° W 181° 2° W 183°
TVMDC + W – E – 178 + 3 = 181 + 2 = 183
6. 243° 5° W 248° 0 248°
CDMVT – W + E – 248 =+/- 0 = 248 – 5 = 243
7. 355° 4° W 359° 4° E 355°
CDMVT – W + E – 355 =+ 4 = 359 – 4 = 355
8. 334° 1° E 333° 3° W 336°
TVMDC + W – E – 334 – 1 = 333 + 3 = 336
9. 156° 10° W 166° 5° W 171°
TVMDC + W – E – 156 + 10 = 166 + 5 = 171
10. 149° 8° E 141° 4° W 145°
CDMVT – W + E – 145 – 4 = 141 + 8 = 149
11. 089° 4° W 093° 1° E 092°
TVMDC + W – E – 089 + 4 = 093 – 1 = 092
12. 138° 3° E 135° 1° W 136°
TVMDC + W – E – 138 – 3 = 135 + 1 = 136
13. 238° 3° W 241° 4° E 237°
CDMVT – W + E – 237 + 4 = 241 – 3 = 238
14. 245° 2° W 247° 3° W 250°
TVMDC + W – E – 245 + 2 = 247 + 3 = 250
15. 340° 4° E 336° 10° W 346°
CDMVT – W + E – 346 – 10 = 336 + 4 = 340

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