Profession construction commercial diver

Commercial divers work below the surface of the water to install equipment, such as hydraulic structures, waterways and marine facilities. They also inspect, remove and repair the structures.

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Personality Type

  • Realistic / Investigative


  • Diving operation requirements

    The operational plan and the contingency plan for the diving operation, the diving equipment to be used in the diving operation, the diving signals to be used in the diving operation, the in-water decompression procedures to be used in the diving operation, and any emergency procedures that might have to be used in the diving operation.

  • Diving equipment

    Equipment used for a dive, including wetsuits and drysuits, helmets, scuba equipment and any umbilical equipment which provides the connection with the surface.


  • Implement dive plans

    Implement dive plans, working with the client, vessel teams and marine superintendents.

  • Use lift bags

    Use bags filled with air to help carry objects underwater, or send them to the surface. Choose the right capacity lift bag for the object to be carried and attach it securely to the object. If multiple bags are used, make sure the lifting capacity is distributed evenly.

  • Follow health and safety procedures in construction

    Apply the relevant health and safety procedures in construction in order to prevent accidents, pollution and other risks.

  • Cope with decompression

    Ascend from a dive in stages or slowly according to a decompression plan in order to give the body time to adapt to the lowered pressure. Prevent the buildup of dissolved gases in living tissue, as well as other symptoms linked to rapid ascent, collectively known as decompression sickness or "the bends".

  • Comply with the planned time for the depth of the dive

    Ensure that a diver returns from a given depth after the planned time limit has expired.

  • Weld underwater

    Use underwater arc welding equipment to make welds beneath the water surface. Protect yourself from electric shocks by shielding the weld from the water.

  • Weld in hyperbaric conditions

    Use arc welding techniques to make welds in conditions of very high pressure, usually in an underwater dry chamber such as a diving bell. Compensate for the negative consequences of high pressure on a weld, such as the shorter and less steady welding arc.

  • Work ergonomically

    Apply ergonomy principles in the organisation of the workplace while manually handling equipment and materials.

  • Interrupt diving operations when necessary

    Terminate or interrupt the diving operation if you judge that continuing the operation is likely to endanger the health or safety of any person involved.

  • Inspect construction supplies

    Check construction supplies for damage, moisture, loss or other problems before using the material.

  • Maintain diving equipment

    Perform maintenance actions, including small repairs, on diving equipment.

  • Check diving equipment

    Check diving equipment for valid certification to ensure its suitability. Ensure that any diving equipment is examined by a competent person before use, at least once on each day on which it is to be used. Ensure that it is adequately tested and repaired.

  • Use safety equipment in construction

    Use elements of protective clothing such as steel-tipped shoes, and gear such as protective goggles, in order to minimise risk of accidents in construction and to mitigate any injury if an accident does occur.

  • Use rigging equipment

    Set up rolling and lifting equipment required to lift and move objects e.g. with a crane or block and tackle system.

  • Comply with legal requirements for diving operations

    Ensure that diving operations comply with legal requirements.

Optional knowledge and skills

inspect concrete structures dive with scuba equipment operate drilling equipment use wrenches inspect offshore constructions inspect pipelines operate hand drill process incoming construction supplies manage explosives in accordance with legislation cut metal products ensure health and safety of dive teams recognise signs of corrosion work in underwater chamber install metal gas piping work in a construction team dispose of sewage sludge ensure diving operations conform with plan examine prospective blast area display warnings around dive site perform underwater bridge inspection diving vessels systems pour concrete underwater critique the dive with the dive team insert charges into drill holes repair pipelines keep personal administration