The DO Improvement Ship MIZUSUMASHI
The MIZUSUMASHI was developed by Mitsubishi Heavy Industries, Ltd. (MHI) in joint cooperation with the Chubu Regional Construction Bureau of the Ministry of Construction and delivered to the Bureau in June 1995. The ship is equipped with a water flow generating plant which promotes circulation of flow both on the water surface and in water and contributes to the preservation and improvement of water quality (especially DO, dissolved oxygen) by preventing the stagnation of water at the bottom of the river.
Features
1. Three water jet type water flow generating cylinders developed by MHI having a total output of 36,000m3/h are suspended by a retractable arm.
2. The operating depth and the jet angle of the water flow generating plant are adjustable, and it is possible to mix pressurized air to increase the amount of dissolved oxygen in the river water.
3. The ship can be operated while moored and is capable of working to improve water quality over a wide area of water with mobility by using a propulsive drives.
PRINCIPAL PARTICULARS
Length(o.a.)……………18.0m
Length of hull……………14.0m
Breadth(mld.)……………9.0m
Depth(mld.)……………2.0m
Draft(mld.)……………1.3m
Gross tonnage……………17
Main engine……………Mitsubishi 4-Cycle Diesel, 105PS×2
Speed……………4knots
Complement……………2
Classification……………JCI(Japan Craft Inspection Organization)
Working device……………12,000m3×3 Water Flow Generator×3 (at 4.5m behind the device)
