Dredger
Grab dredger

The world's largest grab dredger
GOSHO

Counter weight balanced hydraulic system
361 RYOSEI MARU

Counter weight balanced hydraulic system
661 RYOSEI MARU

Next generation grab dredger hybrid vessel
Hybrid vessel
381 RYOSEI MARU

Anchorless grab system
CHUKO MARU
Backhoe dredger

Spud system backhoe dredger
26 RYOSEI MARU
Reclamation
Air pressure vessel

Air pressure vessel
KOKUSHO

Air pressure vessel
AP-2100 RYOSEI MARU

Air pressure vessel
AP-1660 RYOSEI MARU

Air pressure vessel
AP-1000 RYOSEI MARU
Barge unloader

The largest barge unloader in Japan
P-8160
RYOSEI MARU

Barge unloader
P-3000 RYOSEI MARU

Barge unloader