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Technological Information

Dredging technology

Overview

The harbor construction of Rinkai Construction Co., Ltd. started with dredging seabed soil and using it for reclamation. Building and operating good dredger vessels were the key for successful works in the coastal construction. Rinkai Construction's technology in dredger vessels, which introduced large-pump dredgers, supported the Japan's high economic growth period. The company's dredging technology has developed with the times, currently being at a stage of performing clean dredging to contribute to produce bountiful sea.

Features

■ Environmental-responsive wide-grab bucket "SARA" ■
In recent years, dredging has been performed mainly for increasing or maintaining the depth of navigation channels or anchorages, or for removing the bottom mud to improve the sea environment. Dredging works face challenges on handling dredged material and on its impact to the surrounding environment. Our company, responding to the challenges, introduced and has been operating an environmental-responsive wide-grab bucket "SARA", enabling efficient and environment-friendly dredging works.

Note

  • Vessel name Kamo Go
    Principal dimensionsLength 21.5m
    Breadth 6.5m
    Depth 2.4m
    Draft1.8m
    Drive systemD
    Spec. designation180 PS type
    Nominal capacitypumping
    rate
    50m3/h
    pumping
    range
    1,000m
    pump output220 kw /
    300 PS
  • Vessel nameIsahaya Go 1
    Principal dimensionsLength25.0m
    Breadth15.0m
    Depth1.8m
    Draft1.0m
    Drive systemD
    Spec. designationT2-200 type
    Nominal capacitypumping
    rate
    250m3/h
    pumping
    range
    1,500m
    pump output720 kw /
    973 PS
  • Vassel name Taihei Go
    Principal dimensionsLength18.0m
    Breadth 13.0m
    Depth 2.0m
    Draft1.2m
    Drive systemD
    Spec. designationT2-70type
    Nominal capacitypumping
    rate
    55m3/h
    pumping
    range
    1,200m
    pump output290 kw /
    390 PS
  • Vassel name Kongou Go
    Principal dimensionsLength10.0m
    Breadth 9.3m
    Depth 1.5m
    Draft0.8m
    Drive systemDE
    Spec. designationSteel D
    2.5 m3 type
    Nominal capacitybackhoe
    volume
    0.5m3
    pumping
    rate
    40m3/h
    pumping
    range
    1000m
    pump output470 kW /
    640 ps
  • Vassel name Eitoku
    Principal dimensionsLength 22.5m
    Breadth 7.5m
    Depth 1.8m
    Draft1.0m
    Drive systemD
    Spec. designationSteel D
    2.5 m3 type
    Nominal capacitygrab
    volume
    1.5m3
    soil-lift
    rate
    120m3/h
    dredge
    depth
    25m
    pump output210 kW /
    285 ps
  • Vessel name Mud-ground excavator
    Principal dimensionsLength 12.2m
    Breadth 6.6m
    Height 4.3m
    Drive system D
    Spec. designationSK-200-3,6
    Nominal capacitybackhoe
    volume
    0.6m3
    excavation depth9.0m
    pump output104 kW /
    140 ps