The resistance of the sea was so great that even a bullet that could break gold and stone would become soft and powerless in the water.
It would be very difficult to deal with the underwater monsters with guns and cannons alone. Once the monsters got close in groups, no matter how strong the hull was, it would not be able to withstand their damage.
In this case, special weapons were needed to eliminate the sea monsters.
Tang Zhen would arrange a device similar to a rocket launch nest at the bottom of the warship. It could launch a cross-shaped spear with a length of about five meters. It could attack the underwater sea monster with extremely high speed.
At the same time, there would be runic magic circles on the weapons to enhance their penetration and destructive power, achieving the effect of large-scale killing.
After the weapon is fired, all the monsters in the direction of the spear will be attacked until the momentum of the spear is gone.