China plans giant 11,000-ton ship to drill into seabed at depths of 16,400 feet

Engineers at the China Communications Construction Company (CCCC) have completed the design research for a 10,000-tonne deep-sea engineering survey ship. It will also feature a 16,404-foot (5,000 m) deepwater drilling kit, marking an important milestone on its journey toward construction.

Deep-sea research vessels are specially designed floating laboratories that carry out multiple oceanographic activities from a single platform. Several countries operate these vessels to explore local marine environments, track environmental change, and study its impact on human civilization.

China operates one of the largest marine and deep-sea research fleets, surpassing the US, the UK, European countries, and island nations such as Australia and Japan. A team of engineers, academics, and specialist researchers at CCCC spent the last two years completing the technical research that culminated in the final design of the vessel.

Features of the vessel

According to the design blueprint, the vessel will feature a Beidou time and space reference system for navigation and positioning. This will be a highly precise system necessary for offshore surveying and mapping.

In addition to these capabilities, the vessel will also feature in-situ testing and ocean observation onboard. The centerpiece of its capabilities is the 16,404 feet (5,000 m) deepwater drilling kit. The large-bore top drive supports multiple coring methods with a 150-tonne load rating.

A traveling block heave compensation system facilitates both active and passive drilling modes. The heave compensation is designed to keep the drill string steady even when the ship rises and falls on the swells.

To test the seabed, the blueprint features an integrated downhole cone penetration system and uses a bottom-hold sampling method that can work at depths of nearly 5,000 feet (1,500 m) and a penetration force of 100kN.

The design uses advanced geophysical survey approaches, including a mother ship plus crewed and uncrewed boats, and features some of the most advanced hydrological and meteorological survey equipment.

The vessel design boasts an integrated system that not only runs operations from the deck but also provides a platform for data fusion and tiered warnings.

39 patent applications

Although it is still a blueprint, it has already produced 31 technical plans, 22 papers, 14 software copyrights, and 39 invention patent applications. The team also developed two pieces of hardware and tested them as prototypes.

The work was assessed after the technical research was completed and found to be advanced at international levels overall, while some of the work was marked as world-leading, a local media report said.

The team explored ideas on how the vessel should be designed, built, and operated. While the design incorporates functions for offshore engineering, resource exploration, and scientific research onto one platform, the cost of such a construction, along with its timeline, has not been revealed.

Given China’s strength in maritime technologies, it is only a matter of when they build this research vessel, rather than if they ever build it.