Oficialūs aprašymai pateikiami originalo kalba (anglų).
This class includes: - construction and reconstruction of, e.g.: • waterways, harbour basins, rivers, marinas • hydromechanical structures (e.g. locks, lifts, sluices, slipways) • dams and dykes - dredging of waterways (e.g. harbour basins, rivers)
This class excludes: - construction of underwater pipelines, see 42.21 - laying of underwater cables, see 42.22 - project management activities related to civil engineering works, see 71.12