児島G2モーターボート大賞 準優勝戦！ ベスト6が出揃った！│BOATCAST NEWS 2026年7月4日│

Boat Race Kojima "GII Motorboat Grand Prix National Regional Representative Race" Day 5 The semi-final race has finally arrived! The top 18 racers clash! Will top rookie Ren Tsunemi, who topped the preliminaries, secure a victory and achieve his first GII championship?! Or will the local Okayama racers show their determination and stage a dramatic comeback? Watch the nail-biting battle for a ticket to the final race from Race 10 to Race 12! Watch the live races of the final day of the Kojima GII Motorboat Grand Prix here: https://boatcast.jp/live/018930.html #BOATCASTNEWS #BoatRace #BoatRaceKojima #RyuseiUeda #HitoshiShinozaki #RenTsunemi