Bombardment of Ellwood

The Bombardment of Ellwood during World War II was a naval attack by a Japanese submarine against United States coastal targets near Santa Barbara, California. Though damage was minimal, the event was key in triggering the West Coast invasion scare and influenced the decision to intern Japanese-Americans. The event also marked the first shelling of the North American mainland during the conflict.

Following the surprise attack on Pearl Harbor in Hawaii, seven Japanese submarines patrolled the American West Coast. They sank two merchant ships and damaged six more, skirmishing twice with U.S. Navy air or sea forces. By the end of December, the submarines had all returned to friendly waters to resupply. However, several had gone to Kwajalein, and would pay a return visit to American waters. One of these was the Imperial Japanese Navy submarine I-17. The I-17 displaced 3,654 long tons when submerged and was 365 ft 6 in long. Her armament included six 20 in torpedo tubes and 17 torpedoes, plus a 14-cm deck gun. She carried 101 officers and men, captained by Commander Kozo Nishino.

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