Safety Flash

Case study: Lone watchkeeping grounding at night

IMCAInternational Marine Contractors AssociationIMCA SF 09/21

Case study: Lone watchkeeping grounding at night

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Summary

This flash examines Priscilla’s night-time grounding after drifting south of its planned track on autopilot. The watch officer spent about two hours watching mobile-phone videos without monitoring progress. Lessons emphasise attentive navigation, risk assessment before using a sole lookout, and configuring electronic navigation aids to warn of danger.

Topics

About This Record
Publisher
International Marine Contractors Association
Type
Safety Flash
Reference
IMCA SF 09/21
Date
30 March 2021
Topic
Human Factors, Vessel Grounding
Activity
Navigation
Equipment
Navigation and Positioning Equipment
Control
Alarm Management, Risk Assessment
Sector
Marine Industry
Setting
Vessel
Link
Checked , working
Record
imca-sf-09-21-case-study-lone-watchkeeping-grounding-at-night · added 1 September 2026

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