Exploring Japanese Submarines I-201 & 1-401

On November 3 and 4th, Ocean Exploration Trust explored the wrecks of Imperial Japanese Navy submarines I-201 and I-401. At the end of WWII, these vessels were surrendered to the US Navy and intentionally scuttled off the coast of Oʻahu in 1946. Discovered by the Hawaiʻi Undersea Research Laboratory in the early 2000s, the team returned as part of a technology testing expedition to examine changes in these sites since their last survey over a decade before. 

Every Ocean Exploration Trust expedition brings together experts from many disciplines, including scientists, technology specialists, students, professional mariners, and educators. This archaeological investigation was made possible by the expertise, support, and collaboration of many partners, including Hawaiʻi Undersea Research Lab, the University of Hawaiʻi, NOAA Ocean Exploration, NOAA Office of National Marine Sanctuaries, the Office of Naval Research, and SEARCH Inc. 

Learn more about this expedition funded by the Office of Naval Research.