Although there were, in fact, several cases where the bakufu ordered Saigoku-gokenin to guard Tosen running along domestic coasts, the government did not guard the ships after they ran out into the open sea and basically left the guard to the merchants..
実際、幕府が国内沿岸を運行する唐船の警固を西国の御家人に命じた例がいくつか見られるものの、外洋に出た後の航海は護衛せず、基本的には商人たちに放任されていた。