Challenge
A container vessel requiring frequent port maneuvers struggled with slow speed response and inadequate astern thrust, limiting operational flexibility in congested waterways.
Solution
Jinye delivered a complete Controllable Pitch Propeller (CPP) system. Both hub and blades were cast from Cu3 Ni-Al Bronze, meeting dual-class certification from DNV and ABS.
Result
Low-speed maneuvering response time shortened by approximately 35%, with smooth and reliable astern thrust. The CPP system's efficient utilization of main engine power significantly improved fuel consumption at equivalent speeds, greatly enhancing the owner's operational agility.
Challenge
A coastal patrol boat required seamless transition between high-speed interception and low-speed loitering, demanding exceptional propeller efficiency across the full speed range and structural resilience under repeated rapid acceleration.
Solution
Jinye developed a five-blade CPP system, using CFD simulation to optimize blade load distribution across pitch settings — ensuring robust thrust reserves at high speed and steady, quiet performance at low speed.
Result
The vessel achieved its contract speed at full load, with low-speed cruising fuel economy improving by approximately 8%. The Cu3 Ni-Al Bronze blades exhibited zero fatigue cracks after multiple emergency acceleration missions, earning high recognition from the owner for overall system reliability.
ZHENJIANG JINYE PROPELLER CO.,LTD.