I-19 was a Japanese B1 type submarine which saw service during World War II. On February 23, 1942, I-19's floatplane made a night reconnaissance over Pearl Harbor, Hawaii in support of Operation K-1, a second attack on Pearl Harbor by the Japanese Navy. On March 4, she arrived at the French Frigate Shoals to serve as a radio beacon for the 'Emily' floatplanes that were to attack Pearl Harbor. The 'Emily' attack was canceled.
On September 15, 1942, while patrolling south of the Solomon Islands during the Guadalcanal campaign, I-19 sighted and attacked the U.S. carrier Wasp, firing six torpedoes. Three of the torpedoes hit Wasp, causing heavy damage. With power knocked out due to damage from the torpedo explosions, Wasp’s damage-control teams were unable to contain the ensuing large fires, and she was abandoned and scuttled. U.S. battleship North Carolina and destroyer O'Brien were hit by the remaining three torpedoes during the same attack (often incorrectly attributed to a second Japanese submarine). O'Brien later sank as a result of the torpedo damage and North Carolina was under repair at Pearl Harbor until November 16, 1942.
From November, 1942, until February, 1943, I-19 assisted with the nocturnal supply and reinforcement deliveries, and later, evacuations for Japanese forces on Guadalcanal. These missions were labeled 'Tokyo Express' by Allied forces.
Between April and September, 1943, I-19 was stationed off of Fiji. During this time, the submarine sank two and heavily damaged one Allied cargo ships. After sinking one of the ships, I-19 surfaced and machine-gunned the surviving crew members in their lifeboats, killing one of them.On November 25, 1943, at 20:49, 50 nautical miles (93 km) west of Makin Island, destroyer USS Radford detected I-19 on the surface with radar. After I-19 submerged, Radford attacked her with depth charges. I-19 was lost with all hands in this attack.