Walfisch

The Walfisch is a submarine previously owned by Major Aohi, but "given" to Makina when she threatened to expose his cooperation with Tamaki.

Makina used this to infiltrate Deadman Wonderland.

Technical aspects

 * Weight: 3,200 tons
 * Maximum submerged speed: 34 knots (aprox. 39mph, 63km/h)
 * Equipped with acoustic wave absorbing polymer which can maximize stealth efficiency

Trivia

 * Walfisch is German for whale.