The high-specification ultra-deepwater drillship Tidal Action, owned by Hanwha Ocean, has started its maiden contract with Petrobras at Roncador field, offshore Brazil. Tidal Action, built on Hanwha Ocean’s proprietary design, is capable of drilling at depths of up to 12 kilometers in waters as deep as 3.6 kilometers. In April 2025, the drillship was handed over by its owner Hanwha Ocean to its subsidiary Hanwha Drilling, established in 2024 as its drillship fleet operator. "I am also grateful for the manner in which the Constellation Rig Crew has represented the Tidal Action. Constellation has done an excellent job of assigning a team of highly competent and motivated individuals to the Tidal Action.