Low-cost off-shore Gas Processing (cost analysis, capital and operating parameters, key benefits of using an FSRU-attach Oxford paper) - It must be noted that the cost of the offshore infrastructure is totally location specific and almost dependent on the length of the offshore and onshore pipeline required to connect to the gas network. Subsea export gas pipelines are typically 24-30” in diameters and might cost the order of $3-4m per km while onshore pipelines may typically cost $2-3m per km. For an offshore (open water) terminal, the vessel would be fastened and connected to the gas export system using either a submerged buoy system or a surface system.