Actually, it is flood the tubes, then open outer doors. You wouldn't know if you hadn't ever been aboard and participated in the drills. Bring her to periscope depth. Periscope up! Bearing! Range! Down scope! Prepare tubes one and two! Come to heading 072. Fire tubes 1 and 2! Dive! Come to bearing 162! Level bubble at 600 feet! Bob - N0DGN