Watch LIVE: NOAA live dive on historic Japanese mini submarines near Pearl Harbor
To prepare for 2017 expeditions, the Okeanos team will conduct two at-sea “shakedown” cruises, when all of the ship’s mission systems undergo rigorous tests to ensure everything is performing properly and that the ship is fully ready for the field season and will collect the highest-quality data possible. The first cruise, from December 1 – 8, 2016, is focused primarily on testing remotely operated vehicle and telepresence systems. The second cruise, running from December 10 – 16, is dedicated to mapping and continued telepresence shakedown.
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Okeanos Explorer Shakedown: Camera 1
Okeanos Explorer Shakedown: Camera 2
Okeanos Explorer Shakedown: Camera 3
As part of the attack on Pearl Harbor on December 7, 1941, the Imperial Japanese Navy sent an attack group of submarines to surround Oahu and sink ships attempting to flee. Five of the submarines carried top-secret “mini submarines.” These submarines, each armed with two torpedoes and carrying two crew members, were to penetrate inside the harbor under cover of darkness before the attack began. They were to surface and fire their torpedoes during the aerial attack. Then, they would dive and escape the harbor, and rendezvous with their “mother submarines,” again under cover of darkness the night of December 7.
Media resources available here.