Using Gunboat Weaponry or Hero Abilities in Boom Beach costs Energy. The amount of Energy available depends on the player’s Gunboat level, total number and bonus amount of Gunboat Energy Statues, and the number of buildings destroyed in the attack. Each Gunboat Weapon and Hero Ability has an initial Energy cost to use, and the cost of usage increases each time the weapon or ability is used.. I think It would be great to have a gunboat weapon the gives extra damage point to our troops. for example: for five or ten seconds extra 50 damage point or extra % 5 . Check out Tips and Upgrade Costs for the Gunboat in Boom Beach. Weapon Lab; Gunboat. By Play Boom Upgrade your Headquarters to acces new Gunboat abilities, .