SWS delivers first two Ulstein PSVs

Malcolm Latarche

Malcolm Latarche · 12 May 2020


Friday 8 May saw the delivery of the first two platform supply vessels of the ULSTEIN PX121 design built at Shanghai Waigaoqiao Shipbuilding (SWS), China, the Guo Hai Min Xing and the Guo Hai Min Sheng.

Two more vessels of the same design at SWS have completed their sea trial and will also be delivered to COSL shortly, according to schedule. Owner of all four vessels is Sino Ocean. They are operating for COSL – China Oilfield Services Limited, for whom they have a long-term charter.


The vessels are 83.4m loa and 18.6m beam. They have a gross tonnage of 3,800 and are powered by four Caterpillar engines.

The ships were ordered, by a then unnamed Singapore-based company, in June 2013 when SWS was being developed to make inroads into what was then a growing offshore sector. The order was later linked to Pacific Radiance but a dispute with the yard lead to the two vessels being delayed and subsequent legal action by Pacific Radiance in 2016 to recover funds paid. The matter was finally resolved last year, and the vessels taken over by the new owner.

The ULSTEIN PX121 is a flexible platform supply vessel design featuring the X-BOW hull line design. In total, 30 vessels of this design have so far been contracted.

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