Smaller or larger construction projects that involve work under water. Examples of underwater construction work can be the development of quay facilities, foundations for bridges, sailing marks, anchoring blocks, lowering boxes, etc.

See refrence projects here.
About underwater construction work
The same as ordinary construction work, such as formwork, concrete work, steel work, etc. The only difference is that it is performed underwater ny professional divers.

Inspection, drilling, blasting, thruster and dredging are often used as preparation before the construction work starts.
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