Exmar designed the OPTI-11000 deep-draft semisubmersible for Delta House around several criteria, one of which was easy riser installation. The floating production unit installed in 1372-metre water depths at Mississippi Canyon Block 254 has space allocated for 18 risers, so efficient and safe riser installation was crucial.
To date, six production risers and two export risers have been installed at the Gulf of Mexico facility using what Exmar dubbed the Fully Aligned Stress-joint Trimming (FAST) Riser Pull-in method.
