Investigation Report
Dry Tortugas Allision with Offshore Platform During Autopilot Navigation
08-16-2025 0530 G09743 VK 817 Collision >$25K - Incident >$25K - Structural Damage - Allision
- BSEE
- Investigation Report
- Unknown
- FatigueHuman factorsStructural and asset integrityVessel collision
- Navigation
- Navigation and positioning equipment
- Alarm managementCompetence and trainingFatigue management
- Marine industryUpstream oil and gas
- Offshore installationVessel
Summary
BSEE investigates the Dry Tortugas allision with Viosca Knoll 817 A on 16 August 2025. The captain fell asleep while navigating on autopilot. Excessive workload may have contributed; missing watch alarms and inadequate fatigue training were identified. Platform damage prompted emergency shutdown and de-manning, with minor first-aid injuries and no pollution reported.
Classifications: Fatigue; worker fatigue; alertness impairment.
Classifications: Human factors; human performance; ergonomics.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Vessel collision; ship collision; marine allision.
Classifications: Navigation; vessel navigation; passage planning.
Classifications: Navigation and positioning equipment; ECDIS; AIS; chart plotters.
Classifications: Alarm management.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Fatigue management.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Classifications: Vessel; aboard ship; onboard vessel.