Safety Flash
Wire break in wind sensor caused DP drive-off
Wire break in wind sensor caused DP drive-off
- IMCA
- Safety Flash
- IMCA SF 12/06
- Inspection and MaintenanceMachinery and EquipmentMarine Operations
- Loss of station keepingMechanical failure
- Dynamic positioning
- Operator displays and control interfaces
- Alarm managementFunctional testing
- Marine industry
- Marine watersVessel
Summary
A vessel suffered a DP drive-off during open-water valve monitoring after water ingress through a failed junction-box seal led to a wind-sensor wire break. Erroneous wind readings affected positioning; the vessel stabilised 17 m from its set-point. Actions included wiring changes, a discrepancy alarm and fleet-wide wire-break tests.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Mechanical failure; equipment failure.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Operator displays and control interfaces.
Classifications: Alarm management.
Classifications: Functional testing; function test.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Marine waters.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A failed wind sensor caused erroneous readings and a dynamically positioned vessel to move significantly from its set point.
IMCA SF 12/06. Themes: inspection and maintenance, machinery and equipment, marine operations.