Scaffolding Over Water — The Safety Risks and How to Plan for Rescue
Scaffolding over water is one of the higher-risk activities on any marine or port construction project. Workers are exposed to fall hazards at height, and if something goes wrong, the recovery challenge is compounded by the fact that the casualty may be in the water — conscious or not.
Sadly, there have been drowning-related deaths in the mining and industrial workplace in Australia. These incidents serve as a sobering reminder that working over water requires the same level of planning and preparation as any other high-risk activity — and that the consequences of inadequate rescue arrangements can be fatal.
The specific risks of scaffolding over water
Scaffold erection and use over water introduces a set of hazards that don't exist on land-based projects:
A scaffold collapse can send multiple workers into the water simultaneously
Workers who fall from height into water may be unconscious or incapacitated on entry
Standard fall arrest systems do not prevent drowning — they may actually increase the risk if a worker is suspended above water and unable to self-rescue
Tidal movement, current, and vessel wash can carry a casualty away from the work site quickly
Retrieval of an unconscious casualty from the water requires specialised equipment and trained personnel
What a rescue plan for scaffolding over water must include
Under WA work health and safety legislation, PCBUs have a duty to manage the risks of working over water. For scaffolding projects, this means having a documented rescue plan that addresses the specific hazards of the site. A compliant rescue plan should cover:
Identification of fall-into-water hazards specific to the scaffold configuration
Control measures including personal flotation devices, throw lines, and rescue vessel standby
Rescue procedures for both conscious and unconscious casualties
Crew qualifications and vessel specifications for the standby rescue operator
Communication protocols between the scaffold crew and the rescue vessel operator
Emergency response procedures including contact with emergency services
Why a standby rescue vessel is the most practical control measure
For scaffolding projects over water, a standby rescue vessel is the most effective control measure for a fall-into-water emergency. A PWC rescue vessel is particularly well suited to this environment — it can manoeuvre quickly in confined spaces around scaffold structures and jetty pilings, reach a casualty in the water within seconds of an incident, and deploy a rescue sled to extract an unconscious or incapacitated casualty safely without requiring the rescuer to enter the water.
Hardy Seas provides standby rescue vessel services for scaffolding projects across Western Australia — from jetty and wharf maintenance to port infrastructure and bridge works. Our crews are trained in water rescue and work alongside scaffold teams to ensure a compliant, site-specific rescue capability is in place for the duration of the project.
If you are planning a scaffolding project over water, get in touch with Hardy Seas to discuss your rescue vessel requirements.
