C386 I Feel so Good about Being in the Stronghold!

In history, an armor-piercing shell used on the pier could reach up to two hundred and sixty centimeters in length and weigh about one and a half tons. The barrel of the shell was close to eight hundred meters per second, and its penetrating ability was terrifying.

However, even the strongest battleship, the pier, only had three sets of 460 cannons in total