Worlds largest drilling rigs

Two of the world’s largest semi-submersible drilling rigs were delivered from Yantai CIMC Raffles Shipyard in 2017.
Here is a video and some facts and figures about those two:

This is a Frigstad D90 design:

The Blue Whale II has also been completed and working in China, drilling for “Flaming Ice” (Gas hydrates):

Blue Whale Offshore Pte. Ltd. is a subsidiary of CIMC Raffles:

The two rigs were supposed to be owned by Frigstad Group as Frigstad Shekou and Frigsad Kristiansand, but changed ownership and names Dec. 2016: