FMC Technologies has combined two industry proven technologies to create the safest and most reliable tandem LNG loading/offloading system available to the offshore industry. The LNG Tandem Offloading System, which is capable of transferring LNG at a rate of 15,000 m³/hr, is comprised of two totally independent systems, the LNG transfer system and the mechanical mooring system.

The LNG transfer system utilizes industry proven LNG transfer technology from FMC Technologies Loading Systems in France. It provides simple LNG connection by vertically suspending the LNG Chiksan loading arms system, a double pantograph comprised of four sixteen-inch product lines, from a fixed outboard boom.

The mechanical mooring system uses a robust duplex yoke that minimizes the sway motions between vessels to maximize the FPSO's ability to offload in harsh weather conditions. This new concept in mooring yoke technology decouples lateral stiffness from fore and aft stiffness resulting in a dual, or duplex action. This duplex yoke, made by SOFEC, Inc., moors the vessels using a combination of industry proven yoke and high load connector technology. The mechanical mooring system is connected using a simple and safe procedure that minimizes assistance from auxiliary vessels. The duplex yoke has been very successful in wave basin model testing as well as extensive computer simulation. Fully integrated, these two systems have resulted in an excellent combination of proven technologies.