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Incident Investigation

Royal Majesty Grounding: GNSS Failure and Automation Bias Lessons for Yacht Bridges

A full case study of the Royal Majesty grounding, focused on GPS dead-reckoning mode, integrated bridge systems, missed cross-checks, and yacht mitigations.

Investigation File

By YachtByte Editorial

Technical editorial team for YachtByte.

Incident investigation

Intermediate

10 min read

Reviewed Jun 30, 2026

Systems & Roles

GNSS, ECDIS, radar overlay, AIS, VDR, conning displays, autopilot, integrated bridge systems, owner dashboards, navigation gateways

AV/IT Captain ETO Navigator Officer of the Watch Yacht Manager

Case Structure

  1. Incident summary
  2. Source material
  3. Timeline
  4. Systems involved
  5. Technical factors
  6. Human factors
  7. Lessons for yachts
  8. Preventative controls

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