Mountain Lake PBS Productions

The Japanese I-400 Class Submarine was an underwater aircraft carrier — a top-secret weapon so potent that it very nearly changed the course of the war. JAPANESE SUPER SUB answers many questions that still surround this unusual weapon: How did the Japanese create this technological marvel? How dangerous was it? Could it really have changed the outcome of the war?

Produced and directed by Eric Stange – the writer/supervising producer on Forgotten War: The Struggle for North America