Name: No. 661 Ryosei Maru
Type: Grab dredger
Owner: Kojimagumi Co.
Built by: SKK Corporation
Year: 1989
Total installed power: 4.120 kW
Length o.a.: 70,0 m
Breadth: 26,0 m
Draught: 2,7 m
Bucket capacity: 38 / 56 m3
Dredging depth: 30,0 m