The 400-foot “Sen-Toku” class submarine found off the coast of Oahu in August had been missing since 1946. The ship, which was one of the largest pre-nuclear submarines ever, was supposed to attack the Panama Canal but was sunk by the U.S. The sub, along with its sister ship found in 2005, could travel around the globe one and a half times without needing to refuel, and held up to three bombers that could take off shortly after the ship reached the surface.
“While describing how they stumbled upon the vessel, researcher Jim Delgado said, “we came upon this as we were looking for other targets … It is like watching a shark at rest.”
For a long time, the U.S. pleaded ignorant of the submarines they sank, supposedly to keep them from falling into the hands of the USSR. Read more at CBS News.
{Andy Heller-Matzav.com Newscenter}
Japan while very different from the germans BUT they where both very innovative
i guess today we would call this SUB a Hybrid
between a SUB & a Carrier
it was able to take a small amount of plains under water & within minutes surface and launch small bombers and carry out a land attack
and if memory serves they did this during/or before the war on the US mainland to scare the US but it had the opposite it helped enrage the US sleeping GIANT