According to the "Heike monogatari," Tomomori hid soldiers on the large Chinese ship that was normally the Taira flagship, and where Emperor Antoku usually was, as part of a stratagem to lure the Kamakura warships in and surround them.
『平家物語』によれば知盛は通常は安徳天皇や平氏本営が置かれる大型の唐船に兵を潜ませて鎌倉方の兵船を引き寄せたところを包囲する作戦を立てていた。