. . . "The Submarine is a unit added to Beyond Earth in the game's expansion Rising Tide. Meant for naval raiding, harassing, and ambushing, submarines are slow relative to Patrol Boats and Gunboats and rely on their stealth and range to pick off vulnerable targets. With the submarine comes the introduction of the concepts of stealth units in Beyond Earth gameplay, namely that they are invisible until attacking or unless adjacent to an enemy unit or city."@en . . "Submarine (CivBE)"@en . . . . "The Submarine is a unit added to Beyond Earth in the game's expansion Rising Tide. Meant for naval raiding, harassing, and ambushing, submarines are slow relative to Patrol Boats and Gunboats and rely on their stealth and range to pick off vulnerable targets. With the submarine comes the introduction of the concepts of stealth units in Beyond Earth gameplay, namely that they are invisible until attacking or unless adjacent to an enemy unit or city. By comparing combat and ranged strengths of Submarines to Patrol Boats and Gunboats, the Submarine has a middle-ground Combat Strength - higher than both the Gunboat and Patrol Boat - but has a lower Ranged Strength than Gunboats. They are also much slower than both ships, but have Invisibility. This makes then difficult to deal with by Patrol Boats, as well as being difficult to target with Gunboats due to the one-tile visibility. It is usually best to deal with Submarines then with other Submarines, or in the late game, Levitating Cavalry and Nanohives due to their poor Movement and thus high susceptibility to ZOC."@en . . . . . .