C605 Horrifying Ships and Cannons

The black cannon was a dozen meters long.

Compared to the other cannons that were used in the Marine Headquarter, there was a difference of more than ten times.

Of course, it wasn't that Marine Headquarter couldn't make it.

However, the larger the cannonballs were, the more power they needed to drive them. At the same time, the accuracy of the cannonballs became worse