Subsea rock installation vessel, suitable for installation of a wide range of rock sizes through a fall pipe at the side of the vessel. With a deadweight of 14,000t, a length of 154 metres and a beam of 28 metres, the vessel can operate in water depths of more than 600 metres. There is accommodation for 60 people.

Built by

Zhejiang Shipbuilding Co.



Owned by

Van Oord

Designed by

Ulstein Design & Solutions BV

Operated by

Van Oord

Principal dimensions

154.4 m
28.0 m
Draught (max):
8.0 m
Speed (max):
13 kn
60 POB

Note: Subject to selected variant configuration


Design type:
Subsea rock installation vessel (SRI)
Bureau Veritas


  • Green passport
  • ICE-1A

Featured solutions

Ship history

Working in close cooperation with Van Oord, this is the first fully integrated design where the Dutch Ulstein companies have been responsible for the development and integration of both the mission equipment and vessel design. The DP-3 vessel is a unique design featuring the distinct X-BOW® hull line and meets the requirements for Clean Design Notation, Green Passport and Ice Class 1A – PC7. The vessel and its equipment are designed for year-round operability in harsh weather and high-sea states.
Ulstein will also supply the main Fall Pipe Deployment system and the majority of the ancillary systems of the rock installation tower. Ulstein puts a strong focus on simplicity, by mechanizing the systems as much as possible, enabling higher levels of safety and control and as such minimising human interaction during the deployment and recovery of the fall pipe.

September 2015: First steel was cut. 
December 2016: Launch
End 2017: In her final stages of construction: The inclining tests have been successfully concluded and sea trials are completed. The next step is to set sail to Xiamen for installation of the innovative Fall Pipe Deployment system. Final outfitting/commissioning will be conducted in Europe.

IMO Number: 9756200

Film from launch

Introductory film: How does the vessel work? (CR: Van Oord)

Image below from the launch of the ship.


Please contact us for more information

Ulstein Design & Solutions B.V.

Cornerstone Building (6th floor)
Rotterdam Airportplein 32
3045 AP Rotterdam
The Netherlands

Tel: +31 10 475 00 11