NGC Marine-Supplied CPP System for Firefighting and Oil Spill Recovery Vessel After Successfully Sea Truaks

On April 21, 2025, the Controllable Pitch Propeller (CPP) system supplied by Nanjing High Accurate Marine Equipment Co., Ltd. (NGC Marine) for MV. QIHANG 19 firefighting and oil spill recovery vessel was delivered officially after successful completion of sea trials.
MV. QIHANG is multi-functional fully welded steel vessel equipped with two sets of ducted CPP System, powered by two marine diesel engines (2400kW each). With an overall length of 65.80m, a width of 16.00m, a depth of 6.00m, and a design draft of 4.50m, the vessel features world-wide voyage, firefighting, oil spill recovery, oil containment booms deployment and towing (assist large ships in berthing and unberthing operations in offshore areas). As a firefighting and oil spill recovery vessel, MV. QIHANG performs well in stability, seaworthiness and maneuverability. In any wind direction below Beaufort Force 7, it can carry out towing, pushing and traversing safely, and even in the wind of Beaufort Force 9, it can still sail safely.

 The vessel adopts a twin-engine, twin-propeller configuration to supply the features of firefighting, oil spill recovery and towing, equipped with two sets of Azimuth Thruster and Tunnel Thruster system with China Classification Society (CCS) classification. NGC Marine supplied the CPP system, gearboxes, shaft generators, fire pumps, flexible couplings, hydraulic system, tunnel thrusters, and the main propulsion control system. Despite the complexity and high integration challenges, NGC Marine efficiently completed installation and commissioning, including propeller alignment, thruster integration, and hydraulic system tuning, ensuring seamless readiness for sea trials.

 During sea trials, the vessel demonstrated exceptional performance. The hydrodynamic efficiency met design specifications. Speed and towing force exceeded targets. The integrated CPP pitch adjustment pressure remained low. Additionally, the 25-meter propulsion shaft system maintained balanced bearing loads with stable temperatures. The gearbox operated with low noise and temperature, surpassing both design and operational requirements. The expertise from NGC Marine in CPP system, Tunnel Thruster design, manufacturing, and integrated solutions earned high praise from the shipowner, shipyard, and design bureau.
Looking ahead, NGC Marine will continue to expand our mid-to-high-end marine power system integration business, delivering tailored solutions to global clients. By leveraging the strengths in marine engineering, the company aims to enhance the competitiveness of China's high-end vessel and offshore equipment sectors, driving industry advancement, and supporting China to become a maritime powerhouse.