Semi-submersible propeller is designed simply and stably. It has little obstruction because of its structure.
The small size propeller is used for the the built of the small boats, like yachts and fishing boats. The propeller can also be designed as various types according to the specific water area.
| Material List for Propeller | |
| International Mark | National Mark |
| Cu1 (Manganeses Bronze) | ZCUZn40Mn3Fe1 |
| Cu2 (Mn-Fe Brone) | ZCUZn21Al5Fe2Mn2 |
| Cu3 (Ni-Al Bronze) | ZCUA9Fe4Ni4Mn2 |
| Cu4 (Mn-Al Bronze) | ZCUAl8Mn12Fe3Ni2 |