DOP150 with cutter unit A submersible dredge pump type DOP150 has been flown out to Indonesia to help out in a harbour maintenance project. The mooring depth along quay wall is deepened to -16 m using a DOP150 with cutter unit attached to a local excavator. The delivery included beside the pump the hydraulic hoses for the drive and pressure hoses for the discharge side, as well as dredging instrumentation for monitoring the process. See all deliveries