Day Skipper revision module 9 of 17
🧭
Compass
Hand-bearing compass, variation, deviation, and compass conversions.
Use of hand-bearing compassApplication of variation
5 guided lessons · 18 practice questions · 12 flashcards
3 outcomes · self-guided revision
- Distinguish true, magnetic and compass north and identify which error belongs between each pair.
- Update a charted variation to the voyage date and apply its east or west sign without assuming a national value.
- Use the current heading-specific deviation card and recognise when vessel changes or local magnetic items make it unreliable.
A self-guided revision companion that explains essential concepts, then helps you practise and test them. It supports—but does not replace—recognised instruction, practical training, assessment or certification. Access is a one-time payment, not a subscription.
More ways to revise
Practise, topic tests, flashcards and interactive trainers are included with full revision access (£4.99 one-time).
Authority cluster
Study this topic deliberately
- Secure outcome
- Keep True, Magnetic and Compass references explicit through every correction.
- Common mistake
- Applying east or west mechanically without writing the starting and target reference.
- Best next practice
- Write one conversion per line and reverse it as an independent check.