SUBMERSIBLE DREDGE

摘要

A dredging system including a submersible, occupant-operated vehicle having an excavating tool carried thereby; a conduit extending from said tool to a location where said excavated material is to be deposited; a shore installation; and power and air conduits connecting said installations with the vehicle. The system is applicable to the excavation of large areas such as submerged deposits of sand and silt; the formation of narrow, deep trenches such as those utilized for various pipelines and cables; and the grading of level or specifically contoured areas for preparing the bottom for prefabricated structures.