ULSTEINVIK, Norway -- Abu Dhabi-based National Petroleum Construction Co. (NPCC) has awarded Ulstein Sea of Solutions the basic design contract of a large derrick pipelay vessel DLS-4200. The new vessel will be one of the biggest vessels of its kind, combining S-lay double joints pipelay operations with 4,200-short ton lifting capacity, the company says.
The vessel's design will be a modified version of the SOC 3000, the company says. The vessel will be equipped with an Amclyde Model 80 crane.
DLS-4200 is designed to operate worldwide, but will initially be equipped with a mooring system to operate in the Arabian Gulf and India. However, a future DP2 upgrade is envisioned and catered for in the design to minimize the technical impact in the future, the company says.
The vessel features two fixed pitch shaft driven main propellers of 5,500 kW each, which will allow for a sailing speed of 12-13 knots. For future DP upgrade five retractable azimuth thrusters of 3,500 kW each are required.