Coastal Defences • Construction and maintenance of grazing, supporting and raised reefs; • Construction and maintenance of coastal groynes; • Construction of raised and submerged nourishments; • Restoration and rebalancing of sandy shores Dredging and excavation of canals • Port and coast dredging; • Canal excavation and profiling; • Disposal/confinement of dredged sediments; • Delivery of dredged sediments; • Excavations by means of booms forturbidity monitoring; • Transport of contaminated sludge Port works • Construction and maintenance of breakwaters; • Construction and maintenance of quays and piers; • Construction and maintenance of structures for vessels’ mooring; • Laying of floating jetties; • Construction, transport and laying of rocks Environmental morphology • Environmental naturalisation and redevelopment of morphological structures; • Coastal and lagoon environmental protection/restoration works. Specialized activities • Installation and extraction of metal sheet piling, centrifugally cast concrete, steel, wooden posts; • Assistance to off-shore works; • Positioning and recovery of buoys; • Marine salvages; • Maritime and rivertransports. Additional and complementary services • Execution oftopographic and bathymetric surveys; • Assistance to geotechnical surveys; • Seabed levelling; • Environmental controls; • Hire of operating and non-operating equipment.