normal or larger than normal support footings for the legs of an offshore jack up rig with the support footings now to be known as spud cans and an improved hull design to accommodate legs with attachable spud cans along with a method of mounting said spud cans by submerging them lowering each jack up leg down on the designated spud can and locking the two units in together application_number US 201414335352 A description fig1 shows an embodiment of a jack up rig 100 and its main features a buoyant main hull 101 in which vertical shafts known as leg wells 102 run from the upper deck to the underside of the hull through the leg wells jack up legs 103 are installed and connected to a jacking drive system 104 allowing the legs to move up and down vertically to allow the main hull to be lifted out of the water and stand fixedly on the legs resting on the seabed at the end of each jack up leg is installed a spud can 105 the purpose of which is to distribute the load of the jack up rig across a larger area to reduce penetration depth into the seabed when the legs are lowered into the seabed furthermore one embodiment of the jack up rig may comprise a derrick area an accommodation.