# Tasks & work activities — underwater construction supervisor

Source: O*NET 30.3, occupation 49-9092.00 (Commercial Divers).

## Task statements

- **[Core]** Communicate with workers on the surface while underwater, using signal lines or telephones.
- **[Core]** Take appropriate safety precautions, such as monitoring dive lengths and depths and registering with authorities before diving expeditions begin.
- **[Core]** Check and maintain diving equipment, such as helmets, masks, air tanks, harnesses, or gauges.
- **[Core]** Descend into water with the aid of diver helpers, using scuba gear or diving suits.
- **[Core]** Obtain information about diving tasks and environmental conditions.
- **[Core]** Inspect and test docks, ships, buoyage systems, plant intakes or outflows, or underwater pipelines, cables, or sewers, using closed circuit television, still photography, and testing equipment.
- **[Core]** Repair ships, bridge foundations, or other structures below the water line, using caulk, bolts, and hand tools.
- **[Core]** Cut and weld steel, using underwater welding equipment, jigs, and supports.
- **[Core]** Recover objects by placing rigging around sunken objects, hooking rigging to crane lines, and operating winches, derricks, or cranes to raise objects.
- **[Core]** Install pilings or footings for piers or bridges.
- **[Core]** Take test samples or photographs to assess the condition of vessels or structures.
- **[Core]** Install, inspect, clean, or repair piping or valves.
- **[Core]** Operate underwater video, sonar, recording, or related equipment to investigate underwater structures or marine life.
- **[Core]** Remove obstructions from strainers or marine railway or launching ways, using pneumatic or power hand tools.
- **[Core]** Salvage wrecked ships or their cargo, using pneumatic power velocity and hydraulic tools and explosive charges, when necessary.
- **[Core]** Set or guide placement of pilings or sandbags to provide support for structures, such as docks, bridges, cofferdams, or platforms.
- **[Core]** Perform activities related to underwater search and rescue, salvage, recovery, or cleanup operations.
- **[Core]** Supervise or train other divers, including hobby divers.
- **[Core]** Carry out non-destructive testing, such as tests for cracks on the legs of oil rigs at sea.
- **[Core]** Inspect the condition of underwater steel or wood structures.
- **[Supplemental]** Drill holes in rock and rig explosives for underwater demolitions.
- **[Supplemental]** Remove rubbish or pollution from the sea.
- **[Supplemental]** Perform offshore oil or gas exploration or extraction duties, such as conducting underwater surveys or repairing and maintaining drilling rigs or platforms.

## Detailed work activities

- Attach rigging to objects so they can be moved.
- Clean equipment, parts, or tools to repair or maintain them in good working order.
- Communicate with coworkers to coordinate installations or repairs.
- Decontaminate equipment or sites to remove hazardous or toxic substances.
- Drill holes in parts, equipment, or materials.
- Gather information about work conditions or locations.
- Inspect systems to determine if they are operating properly.
- Install piping for installation or maintenance activities.
- Install structural foundations.
- Maintain work equipment or machinery.
- Monitor work areas or procedures to ensure compliance with safety procedures.
- Operate cranes, hoists, or other moving or lifting equipment.
- Operate welding equipment.
- Record images needed to address work issues.
- Repair non-engine automotive or vehicle components.
- Repair pipes to stop leaking.
- Repair production equipment or tools.
- Repair structural components.
- Respond to emergencies to provide assistance.
- Supervise employees.
- Survey land or bodies of water to measure or determine features.
- Test mechanical equipment to ensure proper functioning.
- Train others in operational procedures.
- Travel to work sites to perform installation, repair or maintenance work.