1. economy: electric propulsion has better economy, because the number of generators can be selected according to the power load when generating electricity with a medium-speed diesel engine, so that the unit can always run in an efficient working area and achieve maximum economy. Compared with ships with the same power, electric propulsion can reduce fuel consumption by about 10%, hull resistance by 5- 10, transport efficiency by 15% and speed by 0.5 knots.

2. Load and reliability: The electric propulsion system can control the integration of mechanical and electrical equipment of the whole ship more conveniently, including improving the integration of equipment, which is beneficial to the application of digital and intelligent technology. In addition, the electric propulsion system has obvious advantages in terms of load, maintenance, comfort and flexibility, and is more suitable for modern ships.

3. Environmental protection: Electric boats have the advantages of low energy consumption, zero pollution and low operating cost, which is in line with the current policy direction of energy conservation and emission reduction. Therefore, electric ship enterprises have the property of "low carbon".

4. Development potential: At present, ship electrification is in the primary development stage all over the world. For leading enterprises in boat manufacturing and battery manufacturing, this is a blue ocean market with great development potential.

To sum up, compared with mechanical propulsion of internal combustion engine, marine electric propulsion has better economy, load reliability, environmental protection and development potential.