Safety Flash
Loss of position of DP DSV
Loss of position of DP DSV
- IMCA
- Safety Flash
- IMCA SF 10/04
- DivingEmergency ResponseHuman FactorsMarine Operations
- Loss of station keepingRespiratory hazards
- Diving operationsDynamic positioning
- Diver umbilicalNavigation and positioning equipment
- Operating and work proceduresRisk assessmentSafety communication
- Marine industry
- Subsea
Summary
A DP diving support vessel moved some 107 metres off its worksite, leaving a diver unable to return unaided to the bell. He suffered carbon dioxide toxicity from overbreathing. The investigation attributed the movement to a soliton; recommendations address seasonal scheduling, vessel heading, radar watch, quick-release arrangements and diver communication.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Respiratory hazards; respirable dust; inhalation hazards.
Classifications: Diving operations; diving; commercial diving.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Diver umbilical; diving umbilical.
Classifications: Navigation and positioning equipment; ECDIS; AIS; chart plotters.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Summary
A dynamically positioned diving vessel lost position during subsea wave activity, leaving a diver unable to return to the bell and suffering carbon dioxide toxicity.
IMCA SF 10/04. Themes: diving, emergency response, human factors, marine operations.