Guangzhou Shipyard links up with DNV for heavy lift job

Yard News - November 29, 2007

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Guangzhou Shipyard International (GSI) has selected DNV to class a pair of innovative large semi-submersible heavy lift newbuildings. The 50,000 dwt vessels are purpose-designed and built for the leading Chinese shipowner COSCO's newbuilding programme.

Based on a close and constructive corporation between DNV and the Chinese class society, the vessels are dual class – DNV and CCS.

"Several years ago, we worked with DNV on two smaller 18,000 dwt vessels for Cosco Shipping Ltd (COSL). These new vessels are much larger and more complex. The owner worked with DNV on the earlier vessels, which have done very well in the market since delivery, so the owner specifically requested to work with DNV again on this project," said Su Wei, the general manager of GSI’s Marine Research Institute.

Ms Su explained that the ships have a redundant propulsion system (DNV RPS notation) and have also been built in accordance with very specific stability calculations, particularly relating to submersion for loading.

Mr Ying Hui, the head of the DNV Hull Section in Shanghai said: "The submersion system works to a depth of 26m, which is extremely deep, so the submersion concept using compressed air is like a submarine."

Mr Ying added that he was pleased to be working with GSI on a second set of vessels following the delivery of the open-deck sister vessels Tai An Kou and Kang Sheng Kou to DNV class in 2002 and 2003.

The two 50,000 dwt vessels will be delivered in the second half of 2010. These purpose-built heavy lift vessels have a large open cargo deck measuring 177m x 43m and are capable of transporting the largest semi-submersible and jack-up rigs currently in the market.

The vessels are highly versatile and can handle a wide range of cargoes such as offshore structures, drilling rigs, topsides, jackets, FPUs, FPSOs, barges and other floating and non-floating structures.

In addition to these two vessels, DNV is responsible for classing another sixty ships, all MR tankers, in the GSI order book.

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