COSL newbuild AHTS sinks at shipyard | Airbag ship launching technology Water has leaked into the hold of an offshore oil vessel which is currently under construction at a major Chinese shipyard. The leak has led to the ship being grounded, according to an announcement made by the owner, China Oilfield Services Limited (COSL) on Tuesday. The incident involving the vessel â€œHYSY 682â€³ occurred around 2:00 pm on January 14 at the Nantong Wharf of the shipyard, Wuchang Shipbuilding Industry Company Ltd., in east Chinaâ€™s Jiangsu province, the announcement on COSLâ€™s official website stated. Wuchang shipbuilding industry co., ltd. ,subordinated to china shipbuilding industry corporation (csic), was founded in 1934. It is a large-scale modernized and integrated enterprise which is committed to shipbuilding and an important military product manufacturing base in china. COSL says it is actively assisting the shipyard in taking remedial action and claims that the incident has not led to any form of environmental pollution. COSL, a subsidiary of the state-owned CNOOC Group, has initiated insurance claim procedures for the Anchor Handling Tug Supply (AHTS) vessel which cost 740 million yuan (117.2 million U.S. dollars) to build. In line with the construction contract, the shipyard will be held responsible for the safe keeping of the vessel prior to its delivery, the announcement says, noting that in case of losses or damages to the vessel, the shipyard will be held liable. COSL contracted the shipyard to build the UT788CD utility vessels in April 2009 in Beijing, the financial website caixin.com reports. The first vessel, HYSY 681, was successfully launched at the shipyard in May last year, the report says, adding that the ship was designed by Rolls Royce.