Maxing

Maxing, to max, or to max out refers to the action of causing maximum damage to a ship being attacked. Each ship class has a two types of maximum damage in sea battle. Maxing swordfight damage (this is a historical name which predates the Rumble puzzle) will cause opponents to have the maximum amount of black unbreakable blocks on the Swordfight board (for brigands or players) or lock out a large portion of the Rumble board (for barbarians). If the ships are at war, or in a sinking blockade, reaching full damage will cause a ship to sink.

Examples
A captain of a ship will often yell out the score during sea battle. For example 3 - 1.5 means that the enemies ship has a damage of three, and your own ship a damage of one and a half. And m - 0 means the enemies ship is maxed, and your own ship hasn't taken any damage at all.