Cutter ladder of a dredger
A cutter dredger is a type of vessel used for removing sediment or soil from the bottom of waterways, harbors, and other bodies of water. Its main component is the ladder, which is a vertical steel structure that can be raised or lowered hydraulically. The ladder supports the cutting and dredging equipment, including the cutter head at the bottom of the ladder, which is a rotating drum with teeth or blades that cut into the sediment.
Above the cutter head is a suction pipe or dredge pump that draws the loosened sediment and water mixture up through the ladder and into the dredger's hopper or holding tank. The sediment is then transported to a disposal site or reclamation area.
Other essential components of a ladder cutter dredger are the propulsion system, which enables the vessel to move to different locations, and the control system, which operates the dredging equipment and monitors the dredging process. Some cutter dredgers also have positioning systems that use GPS or other technologies to precisely locate the dredger's position and track its movement.
Overall, ladder cutter dredgers play a significant role in maintaining navigable waterways, keeping ports and harbors clear of sediment and debris, and ensuring safe and efficient shipping.