Template:Leveling5-3

Overview : Good place to level submarines, especially low level like Maruyu.

Suggested Composition : 1 SS

Guide: B. As submarines cannot other subs, your subs won't be damaged, this will result in Rank D Defeat. D Rank gives 840 XP to flagship and 280 to other ships. Night battle between two submarine fleets finishes very quickly. Pros: Cons:
 * retreat after first battle.
 * Slow fleet has 80% chance to go to submarine node
 * If sent to node C, submarine will need to be repaired (low level submarines are very cheap and quick to repair)
 * very fast leveling for submarines
 * will increase sortie losses