Corresponding to this situation, the post of Kaiganbogyo-goyogakari was established, centered on Masahiro ABE, the head of Roju (the second-highest post in the bakufu government), to investigate how the bakufu should defense the nation on the sea.
これに伴い、老中首座の阿部正弘らが中心となって幕府として海防のあり方を検討するために設けられた。