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15 randomly-generated Compass-to-True Bearing conversion problems

Given a boat's True Course and Compass Bearing to an object, calculate the True Bearing of the object. Remember that the compass "errs" by variation and by deviation for the heading of the vessel.

The variation is given. Obtain the deviation by using the Vessel's Devation Table below. Apply the two compass "errors" to obtain true bearing.

Just fill out the blanks and compare them to the answers below, or print the page to work them later. Press Reload (or Refresh) on your browser to generate 15 new questions.



1
2
3
4
5
True Course
272°
136°
028°
156°
184°
Variation
2°E
14°W
17°W
21°E
4°E
Compass Bearing
332°
345°
176°
301°
358°
Deviation
True Bearing

6
7
8
9
10
True Course
036°
119°
295°
206°
006°
Variation
6°E
14°E
20°W
4°W
9°W
Compass Bearing
211°
347°
333°
154°
030°
Deviation
True Bearing

11
12
13
14
15
True Course
030°
114°
139°
177°
074°
Variation
15°E
9°E
11°W
12°E
1°W
Compass Bearing
029°
333°
339°
342°
209°
Deviation
True Bearing





Vessel Deviation Table
Magnetic
Heading		DeviationSteer by
Compass
000 5E 355
015 0 015
030 4W 034
045 8W 053
060 11W 071
075 14W 089
090 15W 105
105 15W 120
120 14W 134
135 12W 147
150 9W 159
165 6W 171
Vessel Deviation Table
Magnetic
Heading		DeviationSteer by
Compass
180 3W 183
195 0 195
210 3E 207
225 6E 219
240 9E 231
255 12E 243
270 14E 256
285 15E 270
300 14E 286
315 13E 302
330 11E 319
345 8E 337




Answers:

1
2
3
4
5
True Course
272°
136°
028°
156°
184°
Variation
2°E
14°W
17°W
21°E
4°E
Compass Bearing
332°
345°
176°
301°
358°
Deviation
14°E
9°W
8°W
12°W
3°W
True Bearing
348°
322°
151°
310°
359°

6
7
8
9
10
True Course
036°
119°
295°
206°
006°
Variation
6°E
14°E
20°W
4°W
9°W
Compass Bearing
211°
347°
333°
154°
030°
Deviation
4°W
15°W
13°E
3°E
000°
True Bearing
213°
346°
326°
153°
021°

11
12
13
14
15
True Course
030°
114°
139°
177°
074°
Variation
15°E
9°E
11°W
12°E
1°W
Compass Bearing
029°
333°
339°
342°
209°
Deviation
000°
15°W
9°W
6°W
14°W
True Bearing
044°
327°
319°
348°
194°

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