Method of exploitation of a nodule deposit on a sea floor...

Details Method of exploitation of a nodule deposit on a sea floor... Method of exploitation of a nodule deposit on a sea floor...

E - Fixed Constructions

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E21C 45/00 (2006.01) B63B 35/40 (2006.01) B63C 11/40 (2006.01) B63H 19/08 (2006.01) E02F 7/00 (2006.01) E02F 9/02 (2006.01) E02F 9/06 (2006.01)

Patent

CA 1089500

A METHOD OF EXPLOITATION OF A NODULE DEPOSIT ON A SEA FLOOR AND A DEVICE FOR CARRYING OUT SAID METHOD Abstract of the Disclosure Polymetallic nodules are collected by means of a plurality of self-propelled vehicles which move upwards and downwards between the sea floor and a surface platform under the action of excess ballast which is partially and progressively released as the vehicle approaches the bottom. The vehicles are propelled along the sea floor by means of at least two supporting units each having at least one helical propulsion fin, the remainder of the ballast being released in order to return the vehicles upwards for docking, unloading and energy-recharging in the surface platform. -1-

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