WW2 Visual Archive on Instagram: "Balao‑Class Submarine — America’s Deep‑Diving Fleet Boat WW2 Visual Archive The Balao‑class was the definitive late‑war U.S. Navy fleet submarine design—built to fight across the huge distances of the Pacific and survive increasingly dangerous anti‑submarine warfare. It followed the earlier Gato‑class with a key improvement that matters in every submarine story: a stronger pressure hull. Wikipedia describes the Balao class as the largest U.S. submarine class, wi