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:
https://dms.licdn.com/playback/C4D05AQFiGyykDo0XVQ/23c5a45d76734e95a8544ba42be7e5a0/feedshare-mp4_3300-captions-thumbnails/1507940147251-drlcss?e=1554886800&v=beta&t=99e2If1bfJVCDrxChWKTudy98BGnOOsFupfJN2Cj1b4
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:
http://www.bluewhaleoffshore.com/
The two rigs were supposed to be owned by Frigstad Group as Frigstad Shekou and Frigsad Kristiansand, but changed ownership and names Dec. 2016:
http://www.cimc-raffles.com/en/enterprise/raffles/company/news/news/201612/t20161206_24780.shtml