Diesel ships bring almost unlimited possibilities for improving ship performance, including improving ship performance and energy efficiency, reducing ship cost, and so on. In improving ship performance, diesel ships can provide higher sound speed and kinetic energy performance, larger passenger and cargo capacity, faster sailing speed, quieter ship sound level and better dynamic performance. At the same time, diesel engine can also reduce the cost of ships, save energy consumption by using less combustible materials, reduce the frequency of supplier replacement and reduce the maintenance cost of ships.