| 摘要 |
<p>A system for the exploration for or extraction of raw materials, minerals or the like in a soft underwater bottom near land (4) consists of at least one fixed head (8a, 8b; 8c) placed in the water (6). A first cable (12a, 12b) runs from a first winch (16a; 16c; 16e) set up on the land (4) or on the head to a second winch (16b; 16d; 16f) set at a distance on the land (4) or on the head. Between a fixed point (14) on the first cable (12a, 12b) and a point of a vehicle (25) which can be propelled on the land (4), a second cable (22) is stretched by means of which exploration (28) or extraction means can be moved, between the last mentioned two points, along or across the underwater bottom.</p> |
