COMPLEMENTARY LOCKING SYSTEM FOR LOCKING LEGS TO THE DECK OF AN OFFSHORE DRILLING PLATFORM AND METHODS OF INSTALLING ONE SUCH LOCKING SYSTEM

摘要

The invention relates to a complementary locking system for locking legs to the deck of a jack-up offshore drilling platform. The inventive system comprises the following elements at each leg, namely: at least one assembly (30) comprising plates (32) forming two counter-racks (31) which are intended to be engaged with a leg rack and, on one side of the plates (32), at least one internal element (40) for connecting the internal edges (32a) of the plates (32), at least one external element (45) for connecting the external edges (32b) of the plates (32) and at least one intermediate member (50) for connecting said at least one internal element (40) to said at least one external element (45). The invention also relates to methods of installing said complementary locking system on the legs of a jack-up offshore drilling platform.