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Norway-based marine solutions and services provider Wärtsilä will design six new oil field vessels for China Oilfield Services (COSL), as part of a contract signed this month.

Out of the six, two are platform supply vessels (PSVs), while the remaining four are anchor handling tug supply (AHTS) vessels.

Once the order is complete, COSL will initially deploy the vessels to support its offshore exploration work in the South China Sea and Bohai Bay.

Based on Wärtsilä Ship Design’s VS 485 PSV MKIII design, the two PSVs are expected to offer high levels of energy as well as being eco-friendly.

Equipped with an optimised hull design, Wärtsilä say the PSVs are able to provide greater efficiency and significantly reduce emissions into air.

The VS 485 PSV MKIII designed PSVs have the necessary tank capacities, a flexible cargo system and are easy to operate in rough seas in challenging weather conditions.

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By GlobalData
“COSL will initially deploy the vessels to support its offshore exploration work in the South China Sea and Bohai Bay.”

With propulsion as well as power and automation system arranged with a four-split, the design helps in improving the vessels’ redundancy.

Wärtsilä will use its VS 4612 AHTS design for developing four AHTS vessels, which will be primarily used to set anchors for drilling rigs and tow mobile drilling rigs from one position to another as part of subsea operations.

The company has partnered with both COSL and its parent company, China National Offshore Oil Corporation (CNOOC), for many years on various projects.

Wärtsilä Ship Design VP Riku-Pekka Hägg said that both COSL and CNOOC are completely familiar with Wärtsilä’s broad range of solutions, which include ship designs, propulsion machinery, automation and control systems and environmental compliance solutions.

“Our values are also very much aligned, with both companies emphasising total lifecycle costs, energy efficiency and environmental sustainability,” Hägg added.

Image: Wärtsilä will supply designs for six new oil field vessels to China Oilfield Services (COSL). Photo courtesy of GeorgHH.