The discussion of this topic is the utilization of splash damage from weapons to attack targets that are submersible. Within the game engine splash damage is calculated as a sphere with the center of the sphere residing at the point of the weapon impact. Therefore damage inflicted can be at, above, below and next to the point of the weapon impact, say at the water surface. The range of splash damage varies according to weapon types, so it is best to consult Unit Roles in Various Combat Theaters & Abilities to know which units can perform these abilities and then refer to the Complete Unit List to gain the specifics. This tactic is especially useful when it is difficult to advance, defend against, or gain a foot hold in water due to the presence of submersibles (submarines, torpedo launcher