To prevent the occurrence of sudden tension in mooring lines during the descent of the container,

Attatch Floaters on each GRIPs, and load ballast water in the hull until Semi-Submersible condition.

• In Towing condition, waterplane area is large. And the platform has a big motion by waves.
• In Semi-Submersible condition, waterplane area is relatively small. And the platform has a small motion.