I-17 was a large I-15-class submarine, displacing 3,713 tons submerged and measuring 111.4 meters long. It carried six 21-inch torpedo tubes, a 5.5-inch deck gun, and a Yokosuka E14Y seaplane. It appears to have carried 17 torpedoes, against a theoretical capacity of 18. A popular story makes Kozo Nishino a merchant captain who fell into a cactus and later returned to avenge oil workers' laughter. That identification conflicts with his career as a submarine officer, although another Japanese merchant mariner could have suffered the accident. Nishino was one of Japan's most accomplished submarine commanders.
Notable Point ยท 31:15-35:24
I-17 and Kozo Nishino
I-17 combined torpedoes, a deck gun, and a seaplane under a career submarine commander whose background contradicts the popular revenge story.