The chart shown on these pages was pulled from one of the midget submarines that participated in the Pearl Harbor attack. It is generally assumed to have come from the captured I-24tou and is therefore often referred to as the "Sakamaki map." However, the provenance of the chart is not yet proven and research continues on the meaning of the markings on the chart.
Click here to see the obverse side of the chart.
Image scans by Midori Yanagihara. The map is held in NARA II, RG80-Box 42.