Definition
Fatigue and reduced alertness are human-performance conditions that can degrade lookout, monitoring, decision-making, communication, and response during navigation or emergency work.
Why it matters
Fatigue is not a generic explanation for every watchkeeping failure. Link this concept only when an accident page attributes fatigue, insufficient rest, sleep disruption, workload, or a related alertness condition to the event. The individual accident page remains authoritative for whether the factor was confirmed, reported, suspected, or explicitly excluded.
Related concepts
- Watchkeeping and navigation monitoring failure
- Bridge Resource Management Failure
- Safety Management System (SMS)
- Lookout Failure
Related incidents
Accidents linked to this concept are grouped by vessel type.
- 2025-02-12: USS Harry S. Truman / BESIKTAS-M collision (2025)
- 2020-10-17: Atina contact with platform SP-57B (2020)
- 2020-03-23: Kaami grounding at Sgeir Graidach
- 2017-07-01: Huayang Endeavour (2017)
- 2017-06-17: USS Fitzgerald (2017)
- 2016-10-13: Nathan E. Stewart (2016)
- 2014-09-23: Key Largo and Sea Shepherd collision (2014)
- 2012-12-12: Beaumont grounding at Cabo Negro
- 2012-11-28: Tundra grounding at Sainte-Anne-de-Sorel
- 2010-01-23: Collision of Eagle Otome with Gull Arrow and Dixie Vengeance tow
- 1999-11-07: Dole America (1999)
- 1995-06-23: Star Princess (1995)
- 1989-03-24: EXXON VALDEZ (1989)