Thunderbolt

A highly charged, long-range cannonball that causes a lightning bolt to stike where it lands. Very effective against ships masts and sails, but can also cause considerable hull damage.

The ability to use these round becomes available at Cannon Skill 12. Increasing the Thunderbolt ability will increase the overall damage caused.

They can be purchased at any gunsmith. Cost - 12 coins (per 25 Thunderbolt rounds)