SSCV Sleipnir

The world’s biggest Semi-submersible Crane Vessel (SSCV) Sleipnir has arrived off Gibraltar for refueling of LNG, crew change and stories after delivery voyage from Singapore, where she was built, via Cape of Good Hope:


She is now off Israel to commence her first job on the LEVIATHAN OIL FIELD

Impressive specs on this vessel:
https://hmc.heerema.com/fleet/sleipnir/

Sleipnir set new world record for heaviest offshore lift by cranes on her first assignment:
https://www.offshoreenergytoday.com/gallery-heeremas-crane-vessel-sleipnir-in-record-breaking-leviathan-lift/
But it is not likely to stay very long since more and heavier jos are on the cards.

It is not the heaviest lift ever performed offshore though. That record belongs to Pioneering Spirit and was set last year:
https://www.offshoreenergytoday.com/video-pioneering-spirit-performs-heaviest-lift-ever-offshore-on-johan-sverdrup/