HONOLULU (HawaiiNewsNow) - A bronze bell from a World War II-era Japanese Navy mega-submarine that was sunk off Kalaeloa in the 1940s has been recovered.
The Hawaii Undersea Research Laboratory brought the bell up during a test dive last week.
It will be restored and put on display at the USS Bowfin Submarine Museum.
The mega-submarine was intentionally sunk off Kaleloa in 1946 so that it wouldn't fall into the wrong hands.
It was forgotten about until recently, when HURL researchers found it as part of their efforts to catalog historic wreck sites.
The mega-submarine is 400 feet long, and is now federally protected.
Terry Kerby, HURL operations direct and chief submarine pilot, led the recovery effort. A team used two submersibles to get the bell and bring it back up.
At the end of World War II, the Navy captured five Japanese submarines, including the mega-sub. The Navy sank them off Oahu in 1946 to keep the technology out of Soviet Union hands.
HURL has found four of the five lost submarines.