Type C I-16 Class
358' 7" x 29' 10" x 17' 6"
2,184 Tons (surfaced)
3,561 Tons (submerged)
6 × 21" Torpedo tubes with 20 Type 95 Torpedoes
1 × 140mm deck gun
2 x 25mm Type 96 AA guns
Built at Sasebo Navy Yard as boat number 45. Laid down on August 25, 1937. Launched November 12, 1938. Completed on January 31, 1941 and registered in the Yokosuka Naval District in SubRon 1's SubDiv 2, Sixth Fleet. Assigned to Cdr Otani Kiyonori.
On November 17, 1941 officers of the Special Attack Unit are briefed on the Hawaii Operation. The I-24 is assigned to Captain Sasaki Hankyu's Special Attack Unit with the I-16, I-18, I-20 and the flagship, the I-22.
On February 11, 1943 in the Coral Sea roughly 200 miles south of San Cristobal. I-18 reports sighting an American Task Force. An OS2U "Kingfisher" from VCS-9 of light cruiser USS Helena (CL-50) spots a submarine about nine miles from the task force. The floatplane drops a smoke marker and calls the nearby USS FLETCHER (DD-445) in to attack. FLETCHER gains sonar contact at 2,900 yards on the bow. At 3:27pm, she drops a pattern of depth charges At 1539, large oil and air bubble breaks the surface. Four minutes later a heavy explosion follows. Three additional depth charges are dropped in center of the diesel oil area. After 3:46pm wreckage, cork, wood and other gear surface in very large oil slick. I-18 sinks at Lat 14-15S, Long 161-53E with all 102 hands. Officially, I-18 was declared Missing In Action (MIA). On April 1, 1943 officially removed form the Navy list.
Combined Fleet - HIJMS Submarine I-18: Tabular Record of Movement
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January 10, 2018