Gentle and thoughtful Egawa seemed to dislike Shozan, but Shozan managed to learn military science from Egawa and wrote and submitted 'Kaibo Hassaku' (eight measures for naval defense) to the lord Yukitsura and was highly estimated.
温厚で思慮深い江川は象山のことを嫌っていたようだが、ともかくも象山は江川の下で兵学の素養を身につけることに成功し、藩主・幸貫に「海防八策」を献上し高い評価を受けた。