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Learn the Sea
Deviation card
learnthesea.com
Steer each heading in turn, compare the steering compass with a known transit or bearing, and record the deviation east or west.
Vessel
Compass
Date swung
Deviation on each heading
| Ship’s head °C | Deviation (°E / °W) | Compass error |
|---|---|---|
Headings every 30°: 000, 030, 060, 090, 120, 150, 180, 210, 240, 270, 300, 330.