It is first Sailing in Mikawa bay Japan at 13 years old.
The dinghy, and it is happy and Sailing in summer up to 18 years old.
The race activity of 470 begins in 1981
SobstadSailJapan(now QuantumJapan)joining a company in 1986
It acts based on the Sagami bay of the race boat
It leaves QuantumJapan in 2007. The activity base is returned to Mikawa bay.
MizukoshiYacht establishment in 2007