Welcome to Marine Ecosystem Engineering Laboratory!
- Ocean surface occupies about 70% of the Earth's surface. Utilizing the vast ocean, we research and develop sustainable marine food and renewable energy production systems in harmony with marine ecosystem .
Open laboratoryIf you want to know our activities or to visit our laboratory, please contact to here.
Overview of the laboratory
Application to study in our laboratoryOur laboratory accepts the students from Department of Systems Innovation, Graduate School of Engineering, The University of Tokyo. If you have a plan to study in our labratory, look at the homepage of Department of Systems Innovation. Also, please contact to here in advance.
Examples of field tests
Controllable Depth Cage (CDC)
A controllable depth cage was developed using a general cage and floats. The vertical position of the cage was controlled remotely by adjusting the buoyancy of the floats based on the real-time vertical water quality profile. The feasibility of a controllable depth cage was tested in Onagawa Bay, Miyagi Prefecture.
Submergible cage using flexible hoses
A general cage made of polyethylene pipes could be submerged successfully by injection and ejection of air in flexible hoses in the pipes. We could prolong the aquaculture period and adjust the shipment time by culturing silver salmon at 10 to 20 m below sea surface, where water temperature is lower by 2 or 3 degrees than that at sea surface.
Motion controlled ship with wave energy harvester
Motion controlled ship with wave energy harvester was developed and its sub-scale model was tested in the real sea. The ratio of harvest of wave energy to improvement of comfort can be varied as necessary. The developed ship will be widely applied to fishing vessels for reduction in energy consumption, to working boats for acculate operation, and to pleasure boats for leisure. Visit the web site which introduces this project.
Submergible cage using step by step exchanging air and water
A large cage could be floated and submerged securely by exchanging air and water in the polyethylene pipe step by step. This submergible cage can be submerged during typhoon attacks to escape from high waves. This cage was also installed in the coastal sea of the Phillipines.