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Yachtmaster Ocean revision module 10 of 10

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Emergency and Electronic Backup Navigation

Navigation without electronics, log records, dead reckoning, astro fallback, and equipment failure planning.

emergency navigationdead reckoning

3 guided lessons · 8 practice questions · 8 flashcards

3 outcomes · self-guided revision
  • Explain navigation without electronics, log records, dead reckoning, astro fallback, and equipment failure planning.
  • Apply emergency navigation to a realistic onboard situation.
  • Recall the core check: keep a DR plot or written track alive.

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.

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Lesson routeElectronics Failure Mindset0/1 read

Lesson 1 of 1

Electronics Failure Mindset

Ocean navigation should assume that GNSS, plotter, charging, displays, or autopilot can fail. Backup navigation is not nostalgia; it is resilience when power, antennas, water ingress, or software remove the easy answer.

A good navigator keeps DR alive even while electronics work. Course, speed, leeway, current estimate, log distance, weather, and fixes form a recoverable track if the screen goes dark.

  • Keep a DR plot or written track alive.
  • Record log, course, speed, weather, and fixes regularly.
  • Protect independent power and backup devices.
  • Practice navigation without the main plotter before needing it.
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