| 摘要 |
<p>Hydraulic dredging system and method, more particularly for great depths, constituted by a first ship carrying the vertical material removing tube, by connection devices giving possibilities for inclining the tube about its fixing point on the ship, a collecting unit which collects the materials from the bottom of the sea and inserts them in the vertical material removing tube and a second ship providing the towing of the collecting device by use of a cable fitted with a device for lifting that device.</p> |
