Introduction

A documentary about Japan’s I-400 class of submarines.

Outline

The I-400 was one of the Imperial Japanese Navy’s Sen Toku-class submarines, which were the largest submarines ever built before the age of nuclear-powered subs.

These massive vessels were longer than a football field and were used as submarine aircraft carriers.

Production & Filming Details

• Original Network: CuriosityStream.
• Release Date: 05 December 2013.
• Running Time: 50 minutes.
• Country: US.
• Language: English.