It is reported that the 8000HP deep-water three-purpose working vessel (ship type shipyard sale) (Offshore Oil 641 vessel) designed and manufactured by Nanjing Gaojing Marine Equipment Co., LTD., a subsidiary of Nangaodon Marine Group, recently began sea trials. After several days of sea trials, the performance and speed of the main propulsion system meet the requirements of ship design. In the bollard pull test conducted at Nansha Yellow Boat Wharf, the bollard pull of the ship at 100% MCR power is greater than the design requirements of the ship. During the sea trial, the propeller of the propulsion system (purchased and supplied by the product warehouse) and shafting operated stably, and the pitch adjustment accuracy reached the international advanced level. The sea trial was a complete success, and the ship was highly praised by the owner. The ship was successfully delivered on June 19, 2015.
The 8000HP Deep-water three-purpose working vessel (ship type shipyard sale) is a type 1 of the Type 5 14-ship construction project of China Oilfield Services (Stock). In 2014, two ships were built simultaneously by Guangdong COSCO Shipping (Location Review News), and the CNOOC ship type adopted the domestic propulsion system for the first time. The main propulsion system uses four medium-speed diesel engines (product supply) to drive two pitch paddles (product supply) with a fairing structure to ensure that the ship can better meet the needs of various ocean missions in the future.
The 8000HP deep-water three-purpose working vessel is designed by Shanghai Ship Research and Design Institute, with long shafting and long stern tube. The propulsion system is four engines (two engines combined), with high speed and bollard pull requirements. According to the performance requirements of the ship, Nanjing high precision Marine achieves the match of the ship engine paddle through the theoretical design of the propeller, and meets the requirements of speed and bollard pull; Select the appropriate disk ratio, pitch value and tip design to reduce propeller vibration and cavitation; At the same time, for 32 meters long shafting, comprehensive consideration of all aspects of shafting, to achieve the purpose of stable operation of shafting. The main propulsion system provided by Nanjing High Precision Marine follows the European standard production, through the corresponding tooling before the equipment factory joint test, effectively reduce the failure rate of equipment, improve the reliability of product quality.
Nanjing Gaojing Marine Equipment Co., Ltd. for the offshore oil 641 ship supporting the main propulsion system has been recognized and praised by the owner, marking the domestic propulsion system into the high-end of the ship supporting, breaking the foreign monopoly on high-end equipment sales of ships.