Patent ID: 9254894
Filing Date: 2016-02-09
CPC Classification: B63B,E21B

Claim Text:
1. A method of installing a floatable subsea platform on a sea floor, comprising: providing a subplatform base, a plurality of connectable modules with subsea equipment positioned on each module, and a buoyancy system with at least one buoyancy tank operably connected to a buoyancy control assembly; latching the plurality of connectable modules to the subplatform base; towing the subplatform base with the plurality of connectable modules by a barge to a sea bottom oil site, wherein the buoyancy system floats the subplatform in water during the towing after the latching; wherein the subplatform base is placed in a moon pool of the barge and is hence disposed in water and surrounded by the barge while being towed; mooring a template to the sea floor at the sea bottom oil site; lowering the subplatform base to the template using the buoyancy system; and latching the subplatform base to the template.