The CX103 designs, Ocean Odyssey and Sylvia Earle, have been delivered from the CMHI shipyard in Haimen, China to SunStone. The final documents were signed on 21 October 2022, completing the delivery. This series of vessels is the first expedition cruise vessels to implement the X-BOW feature for increased comfort.

The ULSTEIN CX103 design, SunStone Ships’ ‘Sylvia Earle’ newbuild, has successfully completed sea trials in end October 2021. Ulstein has delivered the ship design and a comprehensive equipment package and has also been represented with a site team at the CMHI yard during the shipbuilding period.

The U.S. based ship owner SunStone Ships has contracted six expedition cruise vessels of the ULSTEIN CX103 design for construction at the shipyard CMHI , China. In July 2020 the keel laying ceremony was held for the 'Sylvia Earle', vessel number 2 in this series of X-BOW vessels.

A steel cutting ceremony was held for the CX103 expedition cruise design, the ‘Sylvia Earle’, on 16 March 2020 at the CMHI Haimen yard, China. She has been designed by Ulstein Design & Solutions AS for SunStone Ships.

The operator Aurora Expeditions’ next X-BOW® expedition cruise ship will be named ‘Sylvia Earle’, to honour the renowned marine biologist, oceanographer and explorer. The ship is one of the vessels in owner, SunStone Ships’, INFINITY class. Constructed at CMHI, they have been designed by Ulstein Design & Solutions AS.

In 2017, Ulstein Design & Solutions AS announced their first design and equipment contract on an X-BOW expedition cruise vessel for ship owner SunStone Ships. The contract included nine options, and the first option has now been declared.