| 摘要 |
A remotely operated submersible vehicle for preparing a trench in a subsea bottom is disclosed. The vehicle comprises a frame, hoisting and control cables for suspending the vehicle from a surface vessel, thrusters for manoeuvring the vehicle, and an elongated mechanical excavating tool extending across the width of the trench and connected to conveying means for carrying excavated seabed material to a position outside the trench. The excavating tool comprises an elongated support member that extends across the width of the trench and is provided with a number of cutter devices that are actively driven in a rotation direction around an axis extending substantially perpendicular to the longitudinal direction of the support member in the direction of the trench. A method of preparing a trench using the vehicle is also described. |
