Caisson worker

Underwater divers work under water to inspect, install, repair and remove various structures and equipment, conduct tests or experiments, photograph marine structures or organisms, gather various marine organisms for commercial or research purposes, and locate and recover lost objects or people.

• taking safety precautions such as monitoring descent depths and organising underwater expeditions;
• checking and maintaining underwater breathing equipment such as helmets, masks, oxygen cylinders, diving suits, weight belts and control gauges;
• descending under water with the assistance of other divers using scuba equipment or diving suits;
• working under water to install and repair bridges, breakwaters and foundations of harbour walls;
• inspecting for suspected damage and making minor repairs to the underwater parts of ships and underwater installations;
• gathering information on sunken ships;
• removing underwater obstructions;
• drilling holes for underwater blasting;
• performing various underwater tasks related to salvage work or the recovery of dead bodies;
• gathering crustaceans, molluscs and other marine organisms;
• communicating using signal lines and telephones;
• obtaining information on underwater tasks to be performed and environmental conditions.
• Examples of occupations in this unit group:
• Diver
• Diver, salvage of sunken vessels
• Caisson worker
• Deep-sea diver