Suction dredger with central power units - providing hydraulic or electric power for propulsion as well as suction dredging

摘要

The dredger (1) has e.g. screws for propulsion and a suction dredger assembly (18-21), also a number of central power units (6, 7) which serve both propulsion and the dredger assembly. The units which also provide power for the auxiliary equipment may comprise a Diesel-hydraulic or a Diesel-electric power unit. Propulsion may be by hydraulic motors. The dredger assembly may have hydraulically or electrically powered pumps (19). The dredger may have one or more suction drag tubes (20, 21) for outboard drag operation stowable on deck when in transit. The pump unit (18, 19) may be submerged during dredging.