Trailing Suction Hopper Dredger
| Name | Hopper Capacity |
| KAISHUU | 16,500 m³ |
Cutter Suction Dredger
|
| Name | Total Installed Power |
ASIA MARU No.3 | 11,560 kw |
Pile Driving Vessel
| Name | Leader Length | Lifting Capacity |
| KAKURYU | 80 m | 600 ton |
Deep Cement Mixing Vessel
| Name | Unit Improve Area | Capacity |
| KOUKAKU | 5.47 m² | more than 90 m³/h | |
DECOM No.7 | 5.74 m² | 80-150 m³/h | |
DECOM S-7 | 2.23 m² | 30 m³/h |
Self Elevating Platform
| Name | Crane Lifting Capacity | Load Capacity |
| HAKKAKU | 1,250 ton x 18.5m | 4,800 ton |
Anchor Boat
Name | Propulsion Power | Lifting Capacity | |
YOBYO No.203 | 404 kw x 2 | 45 ton | |
YOBYO No.205 | 404 kw x 2 | 30 ton | |
YOBYO No.206 | 324 kw x 2 | 30 ton |
Other Vessels
| Name | Type of Vessel | Capacity |
| TOTRA-Ⅲ | Pneumatic Soil Transfer Vessel | 1000 m³/h |