| 摘要 |
The invention relates to an apparatus for driving an object by vibration or impact, in particular a pile or sheet to be driven into the ground or to be removed therefrom, at an underwater target position, comprising drive means, such as an eccentrically rotatable weight, and means for activating said drive means, characterized in that, the apparatus comprises a beacon to transmit acoustic rays and plurality of thrusters to control the position of said apparatus with respect to the underwater target position. |
