[WernherVonTrapp]

I wouldn't say the 16" shells were underpowered. Especially since you say you were firing on a Yamato Class BB. The Yamato had hardened steel armor plate that took up about 30% of the ship's weight. In fact, it was the heaviest armor ever mounted on a battleship, able to withstand a projectile from one of it's own 18" guns (or a 3000 pound projectile). It's armor plate was 25 inches thick against surface targets. It was actually more vulnerable below the waterline where 7 torpedoes finally took their toll on her during operation Ten-Go. In all, I think it took something along the lines of 12 (1000 pound) bombs and 7 torpedoes to finish her off.