Japan land is small.
But Japan is very large if the sea(EEZ※) is included.
※EEZ:Exclusive economic zone

1. Sea water is  800 times heavier than the air, so units can be much smaller than wind turbines.
2.Tidal flow is cyclic and predictable.

3.Not affected by the weather like sunshine or wind.

Copyright (C) 2015 Blue Ocean., Ltd. All Right Reserved.