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21 Aug 1937

Pacific Ocean
  • Nachi transferred the headquarters company and 1st company of 6th Infantry Regiment of Japanese Army 3rd Division to cruiser Jintsu and eight destroyers off Zhoushan, Zhejiang Province, China. ww2dbase [Second Battle of Shanghai | Nachi | East China Sea | CPC]
11 Mar 1942

Pacific Ocean
  • USS Pollack (SS-180; Lieutenant Commander Stanley Moseley) fired six torpedoes at 1,454-ton Japanese cargo ship Fukushu Maru (none hit) and four torpedoes at 5,266-ton passenger ship Baikal Maru (1 hit, resulting in sinking) in the East China Sea. ww2dbase [Pollack | East China Sea | CPC, HM]
30 Jun 1942

Pacific Ocean
  • USS Plunger sank Japanese ship Unkai Maru No. 5 70 miles southeast of Shanghai, China. ww2dbase [Plunger | East China Sea | CPC]
2 Jul 1942

Pacific Ocean
  • USS Plunger sank Japanese transport ship Unyo Maru No. 3 80 miles east of Shanghai, China. ww2dbase [Plunger | East China Sea | CPC]
22 Aug 1942

Pacific Ocean
  • USS Haddock fired 4 torpedoes at a convoy, sinking Japanese transport ship Tatsuho Maru with 2 hits in the East China Sea 50 miles north of Taiwan at 1310 hours; 36 were killed and the cargo of 10,000 gallons of aviation fuel was lost. ww2dbase [Haddock | East China Sea | CPC]
21 Sep 1942

Pacific Ocean
  • USS Grouper sank Japanese merchant ship Tone Maru 85 miles east of Shanghai, China. ww2dbase [Grouper | East China Sea | CPC]
3 Nov 1942

Pacific Ocean
  • USS Haddock fired 3 torpedoes at oiler Tekkai Maru, sinking her with 1 hit in the East China Sea. ww2dbase [Haddock | East China Sea | CPC]
4 Mar 1943

Pacific Ocean
6 Mar 1943

Pacific Ocean
  • USS Sunfish hit a Japanese ship in the East China Sea with 3 of 7 torpedoes fired; she was lightly damaged by the subsequent depth charging.27,122.5 ww2dbase [Sunfish (Gato-class) | East China Sea | CPC]
9 Mar 1943

Pacific Ocean
13 Mar 1943

Pacific Ocean
  • USS Sunfish sank Japanese cargo ship Kosei Maru off Tokara Islands, Japan in the East China Sea, hitting her with 3 torpedoes. ww2dbase [Sunfish (Gato-class) | East China Sea | CPC]
  • USS Wahoo attacked a Japanese ship in the East China Sea; the torpedo missed. ww2dbase [Wahoo | East China Sea | CPC]
28 Mar 1943

Pacific Ocean
  • USS Wahoo sank two small fishing vessels with her deck gun in the East China Sea. ww2dbase [Wahoo | East China Sea | CPC]
29 Mar 1943

Pacific Ocean
  • USS Wahoo sank freighter Yamabato Maru in the East China Sea, hitting her with 1 of 2 torpedoes. She then transited the Collnett Strait (Tokara Kaiky) between Yakushima island and Kuchinoshima island in southern Japan, eastward into the Pacific Ocean. ww2dbase [Wahoo | East China Sea | CPC]
13 May 1943

Pacific Ocean
  • USS Snook sank a Japanese freighter with 1 of 2 torpedoes fired about 90 miles southeast of Jeju island, Korea in the East China Sea. ww2dbase [Snook | East China Sea | CPC]
15 Jun 1943

Pacific Ocean
  • USS Gunnel sank Japanese cargo ship Kayo Maru in the East China Sea, hitting her with 2 of 7 torpedoes fired. ww2dbase [Gunnel | East China Sea | CPC]
19 Jun 1943

Pacific Ocean
  • USS Gunnel sank Japanese cargo ship Tokiwa Maru in the East China Sea, hitting her with 1 of 6 torpedoes fired She also claimed 1 torpedo hit (of 2 fired) on a Japanese destroyer, but the sinking was not confirmed. ww2dbase [Gunnel | East China Sea | CPC]
20 Aug 1943

Pacific Ocean
  • USS Whale suffered some damage in the East China Sea during a typhoon. ww2dbase [Whale | East China Sea | CPC]
24 Aug 1943

Pacific Ocean
  • USS Whale damaged an oiler and a freighter in a Japanese convoy 37 kilometers west of Kusagaki Islands, Japan in the East China Sea, hitting them with 2 of 4 torpedoes fired. ww2dbase [Whale | East China Sea | CPC]
13 Sep 1943

Pacific Ocean
  • USS Snook sank Japanese transport Yamato Maru in the East China Sea with 1 of 6 torpedoes fired. ww2dbase [Snook | East China Sea | CPC]
14 Oct 1943

Pacific Ocean
  • USS Grayback sank a Japanese passenger-cargo ship in the East China Sea, hitting her with 1 of 4 torpedoes. ww2dbase [Grayback | East China Sea | CPC]
22 Oct 1943

Pacific Ocean
  • USS Grayback sank converted light cruiser Awata Maru in the East China Sea, hitting her with 4 of 6 torpedoes. ww2dbase [Grayback | East China Sea | CPC]
23 Oct 1943

Pacific Ocean
  • USS Grayback fired her deck gun at a small boat in the East China Sea, causing no damage. ww2dbase [Grayback | East China Sea | CPC]
27 Oct 1943

Pacific Ocean
  • USS Grayback fired six torpedoes at a Japanese convoy in the East China Sea, sharing credit for one transport sinking. ww2dbase [Grayback | East China Sea | CPC]
1 Jan 1944

Pacific Ocean
  • USS Finback sank a Japanese tanker in the East China Sea, hitting her with 5 of 6 torpedoes fired. ww2dbase [Finback | East China Sea | CPC]
5 Jan 1944

Pacific Ocean
  • USS Scorpion made rendezvous with USS Herring in the East China Sea, but the planned transfer of an injured sailor from Scorpion to Herring did not take place due to heavy seas. Some time after this date, she was lost, presumed mined in the Yellow Sea. ww2dbase [Scorpion | East China Sea | CPC]
18 Jan 1944

Pacific Ocean
  • USS Archerfish fired four torpedoes at a Japanese patrol craft in the East China Sea; all torpedoes missed. ww2dbase [Archerfish | East China Sea | CPC]
22 Jan 1944

Pacific Ocean
  • USS Archerfish made a radar contact with a 7-ship convoy in the East China Sea north of Taiwan. She fired four torpedoes and struck a freighter, possibly sinking her. ww2dbase [Archerfish | East China Sea | CPC]
30 Jan 1944

Pacific Ocean
  • USS Finback damaged a fishing trawler with gunfire in the East China Sea. ww2dbase [Finback | East China Sea | CPC]
31 Jan 1944

Pacific Ocean
  • USS Finback sank a fishing trawler with gunfire in the East China Sea. ww2dbase [Finback | East China Sea | CPC]
8 Feb 1944

Pacific Ocean
  • USS Snook attacked a Japanese convoy with four torpedoes in the East China Sea. Three of them hit, sinking Lima Maru and damaging freighter Shiranesan Maru. ww2dbase [Snook | East China Sea | CPC]
14 Feb 1944

Pacific Ocean
  • USS Snook sank Japanese freighter Nittoku Maru in the East China Sea, hitting with 1 of 3 torpedoes fired. ww2dbase [Snook | East China Sea | CPC]
15 Feb 1944

Pacific Ocean
  • USS Snook sank Japanese cargo ship Hoshi Maru Number 2 in the East China Sea, hitting with 1 of 2 torpedoes fired. ww2dbase [Snook | East China Sea | CPC]
24 Feb 1944

Pacific Ocean
  • USS Grayback sank cargo ship Taikei Maru, sank cargo ship Toshin Maru, and damaged two others of Japanese convoy Hi-40 in the East China Sea. ww2dbase [Grayback | East China Sea | CPC]
16 Mar 1944

Pacific Ocean
  • USS Flying Fish sank a Japanese transport and damaged a tanker in the East China Sea, hitting them with 3 of 10 torpedoes fired. ww2dbase [Flying Fish | East China Sea | CPC]
29 Mar 1944

Pacific Ocean
17 Apr 1944

Pacific Ocean
  • USS Whale spotted two small Japanese vessels in the East China Sea but failed to achieve attacking position. ww2dbase [Whale | East China Sea | CPC]
23 Apr 1944

Pacific Ocean
  • USS Whale was detected by a Japanese patrol boat 22 kilometers east of Akuseki Shima, Japan, but she was able to escape before the Japanese attacked. ww2dbase [Whale | East China Sea | CPC]
6 Aug 1944

Pacific Ocean
  • USS Pintado sank Japanese cargo ship Shonan Maru and damaged another in the East China Sea; six torpedoes were expended and four of them made contact (two on each target). ww2dbase [Pintado | East China Sea | CPC]
15 Nov 1944

Pacific Ocean
  • USS Kete reached her patrol area in the East China Sea. ww2dbase [Kete | East China Sea | CPC]
17 Nov 1944

Pacific Ocean
18 Nov 1944

Pacific Ocean
  • USS Sunfish sank Japanese transport Seisho Maru in the East China Sea at 0317 hours. ww2dbase [Seisho Maru | East China Sea | CPC]
19 Nov 1944

Pacific Ocean
  • USS Kete departed East China Sea due to heavy weather and malfunctioning bow planes. ww2dbase [Kete | East China Sea | CPC]
19 Dec 1944

Pacific Ocean
  • Unryu was hit by a torpedo from USS Redfish about 200 kilometers southeast of Shanghai, China, which rendered her dead in the water and afire. At 1650 hours, just as some power was restored, USS Redfish hit her again at 1650 hours, igniting aviation gas and sank within seven minutes. 1,241 were killed (including commanding officer Captain Konishi Kaname); 147 survived and were rescued by destroyer Shigure. ww2dbase [Unryu | East China Sea | CPC]
Photo(s) dated 19 Dec 1944
Sinking of carrier Unryu in the East China Sea, as observed by USS Redfish, 19 Dec 1944
11 Jan 1945

Pacific Ocean
  • USS Spot sank a small Japanese freighter with her deck gun in the East China Sea 150 kilometers southeast of Shanghai, China. ww2dbase [Spot | East China Sea | CPC]
13 Jan 1945

Pacific Ocean
  • USS Spot sank two Japanese trawlers with her deck gun in the East China Sea 150 kilometers southeast of Shanghai, China. ww2dbase [Spot | East China Sea | CPC]
14 Jan 1945

Pacific Ocean
  • USS Spot sank two Japanese trawlers with her deck gun in the East China Sea 150 kilometers southeast of Shanghai, China. ww2dbase [Spot | East China Sea | CPC]
20 Jan 1945

Pacific Ocean
  • USS Finback departed for her twelfth and final war patrol in the East China Sea. ww2dbase [Finback | East China Sea | CPC]
6 Mar 1945

Pacific Ocean
  • USS Segundo fired 4 torpedoes at a small Japanese ship in the East China Sea off Korea; all torpedoes missed. ww2dbase [Segundo | East China Sea | CPC]
7 Mar 1945

Pacific Ocean
  • USS Segundo sank Japanese freighter Shori Maru in the East China Sea, hitting her with 2 of 4 torpedoes fired. ww2dbase [Segundo | East China Sea | CPC]
8 Mar 1945

Pacific Ocean
  • USS Segundo pursued a Japanese convoy consisted of 2 freighters and 2 escort vessels in the East China Sea; she was chased away by the escorts before she could attack. ww2dbase [Segundo | East China Sea | CPC]
11 Mar 1945

Pacific Ocean
  • USS Segundo sank Japanese cargo ship Shori Maru in the East China Sea off Korea with 2 of 4 torpedoes fired. ww2dbase [Segundo | East China Sea | CPC]
14 Mar 1945

Pacific Ocean
  • USS Springer attacked a Japanese patrol boat in the East China Sea, but the torpedo missed. ww2dbase [Springer | East China Sea | CPC]
16 Mar 1945

Pacific Ocean
  • USS Spot sank a Japanese cargo ship in the East China Sea, hitting her with 1 of 8 torpedoes fired. ww2dbase [Spot | East China Sea | CPC]
17 Mar 1945

Pacific Ocean
  • USS Spot attacked a Japanese convoy in the East China Sea, sinking one ship and damaging another; 16 torpedoes were expended in this attack. ww2dbase [Spot | East China Sea | CPC]
18 Mar 1945

Pacific Ocean
  • USS Springer sank Japanese Transport No. 18 in the East China Sea, hitting her with 3 of 8 torpedoes fired. ww2dbase [Springer | East China Sea | CPC]
28 Mar 1945

Pacific Ocean
  • The US submarine Trigger was depth charged and sunk by Japanese vessels whilst on patrol in the East China Sea. ww2dbase [Trigger | East China Sea | AC]
7 Apr 1945

Pacific Ocean
  • Kosaku Ariga, commanding officer of battleship Yamato, went down with the ship as the battleship sank. ww2dbase [Okinawa Campaign | Kosaku Ariga | East China Sea | CPC]
  • While enroute to attack the US fleets off Okinawa, Japan, battleship Yamato was attacked by US carrier aircraft resulting in her loss, along with several of her escorts. ww2dbase [Yamato | Okinawa Campaign | East China Sea | TH]
  • Destroyer Yukikaze rescued survivors of battleship Yamato and destroyer Isokaze; she suffered minor damage from American air attacks during the action (3 were killed, 15 were wounded). ww2dbase [Yukikaze | Okinawa Campaign | East China Sea | CPC]
Photo(s) dated 7 Apr 1945
Yahagi being straddled by near misses, East China Sea, 7 April 1945Yamato maneuvering, 7 Apr 1945Yamato and a destroyer in action, 7 Apr 1945Yamato listing but still underway, 7 Apr 1945
See all photos dated 7 Apr 1945
14 Apr 1945

Pacific Ocean
  • USS Spot sank two Japanese trawlers with her deck gun in the East China Sea. ww2dbase [Spot | East China Sea | CPC]
17 Apr 1945

Pacific Ocean
  • USS Cod sank a Japanese tug and its tow in the East China Sea with the deck gun and went on to rescue three of the survivors. ww2dbase [Cod | East China Sea | CPC]
28 Apr 1945

Pacific Ocean
  • USS Trepang sank landing ship No. 146 in the East China Sea about 20 miles southwest of Goto Islands, Nagasaki Prefecture, Japan, hitting her with 1 of 8 torpedoes fired. ww2dbase [Trepang | East China Sea | CPC]
18 May 1945

Pacific Ocean
  • USS Segundo encountered two bodies floating in the water in the East China Sea; her crew identified them to be one American and one Japanese. ww2dbase [Segundo | East China Sea | CPC]
29 May 1945

Pacific Ocean
  • USS Segundo encountered several vessels in the East China Sea; she seven two-masted schooners her crew identified as Japanese with the deck gun. ww2dbase [Segundo | East China Sea | CPC]
3 Jun 1945

Pacific Ocean
  • USS Segundo sank a Japanese sail in the East China Sea with her deck gun. ww2dbase [Segundo | East China Sea | CPC]
9 Jun 1945

Pacific Ocean
  • USS Segundo fired three torpedoes at a tug and her tow; all three missed. She then proceeded to sink them with her deck gun. Seeing that the targets fired back, Segundo's officers determined that the tug was likely a Q-ship. ww2dbase [Segundo | East China Sea | CPC]
10 Jun 1945

Pacific Ocean
  • In the East China Sea about 40 miles northwest of Okinawa, Japan at 0815 hours, a Japanese D3A dive bomber dropped out of the clouds above destroyer USS William D. Porter. Making a sharp turn, the destroyer avoided impact and the plane hit the sea close by. Somehow the dive bomber ended up under Porter's keel and exploded, lifting the ship out of the water. She lost all power and the steam lines fractured. A number of fires broke out and after three hours it was realised that the ship could not be saved. The abandon ship order was given and the destroyer rolled over and sank. Fortune was with the ship though as no fatalities were recorded. ww2dbase [Okinawa Campaign | East China Sea | AC, HM]
9 Jul 1945

Pacific Ocean
  • USS Sea Robin sank a small Japanese patrol craft with one torpedo in the East China Sea and took on one survivor. ww2dbase [Sea Robin | East China Sea | CPC]
10 Jul 1945

Pacific Ocean
  • USS Sea Robin sank Japanese cargo ship Sakishima Maru in the East China Sea, hitting her with all four torpedoes fired. ww2dbase [Sea Robin | East China Sea | CPC]
19 Jul 1945

Pacific Ocean
  • USS Sea Robin fired eight torpedoes at a Japanese tanker in the East China Sea, but all torpedoes missed. ww2dbase [Sea Robin | East China Sea | CPC]
20 Jul 1945

Pacific Ocean
  • USS Sea Robin fired a torpedo at a Japanese ship in the East China Sea; the torpedo missed. ww2dbase [Sea Robin | East China Sea | CPC]
21 Jul 1945

Pacific Ocean
  • USS Sea Robin fired a torpedo at a Japanese patrol boat in the East China Sea; the torpedo missed. Later in the same day, she sank two small tankers with her deck gun. ww2dbase [Sea Robin | East China Sea | CPC]
22 Jul 1945

Pacific Ocean
  • USS Sea Robin sank a small Japanese vessel with her deck gun in the East China Sea. ww2dbase [Sea Robin | East China Sea | CPC]
23 Jul 1945

Pacific Ocean
  • USS Sea Robin sank a small Japanese vessel with her deck gun in the East China Sea. ww2dbase [Sea Robin | East China Sea | CPC]
24 Jul 1945

Pacific Ocean
  • USS Sea Robin fired three torpedoes at a Japanese oiler in the East China Sea; all torpedoes missed. ww2dbase [Sea Robin | East China Sea | CPC]

Timeline Section Founder: Thomas Houlihan
Contributors: Alan Chanter, C. Peter Chen, Thomas Houlihan, Hugh Martyr, David Stubblebine
Special Thanks: Rory Curtis




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A Mogami-class cruiser underway, circa late 1930s


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