March 14: TSB Identifies Fatigue as Contributing to Tanker Incident

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A TSB investigation report indicates that the tanker Nanny made bottom contact in Chesterfield Inlet because fatigue contributed to helm orders being incorrectly applied. No pollution or injuries were reported, but there was damage to the vessel’s ballast tanks. The master had ordered the helmsman to apply port rudder several times. But the helmsman turned to starboard instead. Investigators determined that the master and helmsman were fatigued at the time and that ineffective fatigue management aboard the vessel contributed to their being fatigued while on duty. For example, none of the bridge team members had taken training on fatigue awareness, fatigue management or alertness strategies nor were they required to do so.