C2351 Continuous Shooting

In the era of Naval Gun, the bombardment of heavy artillery was the most powerful. For example, the super 460mm Naval Gun. A cannonball fell down. It could blow up a basketball court. The entire basketball court would not exist. It would turn into a huge crater, even if it was just a few Excavating Machinery. It would take one or two days to dig it out. It could be done with just one shot