Seatools
Tailor-made subsea solutionsGrab Excavation System
The GES underwater tool weighs approximately 75 tons and can be operated down to a water depth of 1000 metres. It is positioned using a combination of hoist winches and thrusters compensatingfor vessel motions. A positioning accuracy of around 20 cm has been proven, allowing for highly efficient dredging. Extensive simulations were carried out as part of the design process, enabling the correct operation of the motion compensation system to be demonstrated in-house at the Seatools factory before the grab ever touched ground. These elaborate preparations paid off handsomely, accelerating the progress of the sea trials and facilitating offline optimisation of the system’s performance at a later stage of the project.
