A SYSTEM AND METHOD FOR THE INSTALLATION OF UNDERWATER FOUNDATIONS

摘要

The present invention provides a system and a method for the installation of a subsea foundation frame to the seabed to which a wide variety of structures can be attached. The system preferably uses tension anchors which are drilled into the seabed. A single tension anchor or multiple tension anchors can be used to secure the subsea structure in accordance with the method of the present invention. To achieve the accurate positioning of the tension anchors, the prefabricated foundation frame structure itself is used as the locating template for the drilling equipment. Furthermore in accordance with the method of the present invention, these tension anchors are installed using robotic underwater installation equipment connected to a small support vessel with an umbilical cable.