Polar Op - Polar navigation - compass
Polar navigation - compass operation card: Gyro unreliable > 80° lat.
Description
Gyro unreliable > 80° lat
Formula, assumptions, and limits
Polar navigation - compass - Gyro unreliable > 80° lat. Follow IMO Polar Code + flag-state / class rules for detailed procedure.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Gyro unreliable > 80° lat | - | Polar Code / IACS PC |