Yari Mini Sub (Designation: VTF-90)
Armament: Single torpedo tube
Equipment: Advanced sonar sensor system
Armor: Light
Cost: $700
Prerequisite: Naval Shipyard
Roles: Scout, Anti-ship, Anti-submersible

The scout of the seas, Yari Mini Subs are vital for naval warfare. They are like jet fighters with their amazing speed and agility but only underwater. Their advanced sensors and radar devices allows them to reveal large portions of unrevealed sea and also detect apposing submersibles from a longer range than the Naginata.

For some offense, they fire single light photon torpedoes at enemy ships. These torpedoes are not as strong as their larger, more powerful counter parts used by the Naginata but they can be fired at a higher rate. They don't carry much armor though. It is advisable not to utilize them against the more powerful vessels unless used in large squadrons or supported by stronger ships. Also, beware of aircrafts which specialize in destroying submersibles.