Class I 168 Kadai Submarine sitting upright with severely damaged bow and conning tower. Depth: 27-43m The I-169 Submarine was a 337ft/102m, 1,400 ton Cruiser-Submarine launched on February 15th, 1934, and one of a class of six known as Kaidai Type 6A that had been developed from large British submarine technology. Originally known as ‘I-69’, her class of submarine was built under the 1931 Fleet First Replenishment Law by the Mitsubishi Zosensho shipyard in Kobe, Japan. It was much faster than prior Japanese submarines with a surface speed of 23.9 knots, a submerged speed of 8.8 knots (electric) and a safe diving depth of 70m. However, the submarines of this class did little to distinguish themselves during World War II with the exception of the I-168 that sank the carrier USS Yorktown and the destroyer USS Hamman at the Battle of Midway. Images were captured by Marcus Blatchford and processed with Agisoft Metashape pro to create the 3d model as part of the Truk Wreck Baseline Project.