ULSTEINVIK, Norway – Ulstein Verft has delivered the fourth of six new PX121 mid-size platform supply vessels (PSVs) to Blue Ship Invest. The latter is a subsidiary of Ulstein Group, but the PSV will be managed by Atlantic Offshore.
Blue Thunder will soon begin a four-month contract for Statoil in the North Sea, with four monthly extension options.
The PX121’s X-BOW hull line is designed for efficiency over a wide draught range. This is important for PSVs, Ulstein says, as they frequently operate with varying loads. X-BOW provides additional benefits in motion and propulsion efficiency in heavy seas, and is therefore suited to operate in the North Sea and North Atlantic.
Blue Thunder is 83.4 m (273.6 ft) long with a beam of 18 m (59 ft), and a maximum speed of about 16 knots. It has a load capacity of 4,200 metric tons (4,630 tons) dwt, and its 850-sq m (9,149-sq ft) cargo deck can support a deck load of 2,200 metric tons (2,425 tons).
The vessel has tanks for oil, water and drilling fluids, and four stainless steel tanks for flammable liquids. There is accommodation onboard for 23 personnel.
Other features include an IMO class II DP system which meets the requirements of DNV’s Clean Design notation. Ulstein Power & Control delivered the vessel’s electrical systems, comprising power distribution and electrical propulsion, an information and communication system, modular consoles and integrated navigation systems and the integrated automation system ULSTEIN IAS.