Underwater construction

[2][3] Some underwater work can be done by divers, but they are limited by depth and site conditions, and it is hazardous work, with expensive risk reduction and mitigation, and a limited range of suitable equipment.

Remotely operated underwater vehicles are an alternative for some classes of work, but are also limited and expensive.

Harbours, docks, breakwaters, jetties, piers, wharfs and similar structures are all immediately adjacent to, or project into coastal waters, and are supported in part by seabed.

[11] Underwater work by divers on construction sites is generally within the scope of Diving regulations.

[12][13] The work may also come within the scope of other occupational heath and safety related regulations.