In further sorties a red gauge meter may shows up when starting a sortie, it's called a '''HP bar'''. It indicates how many times the flagship of the boss fleet need to be sunk to clear the map. The HP bar does not regenerate. | In further sorties a red gauge meter may shows up when starting a sortie, it's called a '''HP bar'''. It indicates how many times the flagship of the boss fleet need to be sunk to clear the map. The HP bar does not regenerate. |