Boat racing競艇[ Kyotei ]

The Kyōtei (競艇), literally "boat racing" and referred to as BOAT RACE, is a hydroplane racing event primary held in Japan. It is one of Japan's four "Public Sports" (公営競技, kōei kyōgi), which are sports events where parimutuel betting is legal.

from Kyōtei (Wikipedia) CC BY SA 3.0