1. Optimized combination of diameter-rotate speed of propeller, that improve propulsion efficiency; in the same thrust force we have smaller diameter, improve the ratio of utilization of cabin;
2. Skew blade and large disk ratio, reduce vibration and improve cavitation performance;
3. Gear and bearing have high strength and long longevity, and dipped into oil to got better lubrication and cooling effect, which improving the reliability of TP;
4. Underwater structure are optimized so that it have rational construction, which convenient for maintenance and repairing.

Tail shaft sealing are enough reliable sealing, meet the strict requirements of anti-pollution law of sea and ocean environment.