The waterways and rivers around old Gotham can be dangerous but beneath the waves can be just as deadly!
With this in mind, Batman has developed the BAT Mini-Sub, a single person miniature submersible that is powered by Hydromagneto propulsion meaning that the sub runs almost silently.
This fact, coupled with the armorments including twin ^Harpedo^ launchers, electrostatic field coils and mini mine deployer.
The Bat Mini-Sub can now patrol the waters and costal areas of Gotham to protect the fair city from any would-be aquatic aggressors!
The Min-Sub may be small but it can certainly pack a punch!