Japanese submarine I-23
Type B1 submarine
I-23 was a Type B1 submarine of the Imperial Japanese Navy during World War II. After a raid on the West Coast of California she participated in an attempt at a second attack upon Pearl Harbor. Wikipedia
Launched: November 24, 1939
Builder: Kure Naval Arsenal
Aircraft carried: 1 x Watanabe E9W1 Type 96 "Slim" floatplane