KAIBOKAN!

(Type C Escort by Takeshi Yuki scanned from "Color Paintings of Japanese Warships")

IJN Escort CD-46:
Tabular Record of Movement

© 2007-2015 Bob Hackett and Peter Cundall

Revision 2


1 May 1944:
Kobe. Laid down at Kawasaki Shipbuilding.

30 June 1944:
Launched and numbered CD-46.

31 July 1944:
Reserve LtCdr Ando Keizo (former navigating officer of HAYATOMO) is appointed Chief Equipping Officer.

29 August 1944:
Completed and registered in the IJN. Reserve LtCdr Ando Keizo is the Commanding Officer.

2 September 1944:
At 0700 departs Kobe.

3 September 1944:
At 1000 arrives at Kure.

7 September 1944:
At 0800 departs Kure and at 1850 arrives at Saiki. Participates in anti-submarine and anti-air training with CD-38 for about a month.

21 September 1944:
At 0800 departs Saiki with CD-38 but at 1850 returns to port.

22 September 1944:
At 0500 departs Saiki with CD-38 but at 1630 arrives back at Saiki.

24 September 1944:
At 0700 departs Saiki with CD-38 but at 1740 returns to Saiki.

25 September 1944:
At 0700 departs Saiki with CD-38 but at 1730 returns to Saiki.

26 September 1944:
At 0700 departs Saiki with CD-38 but at 1130 returns to Saiki.

27 September 1944:
At 0700 departs Saiki apparently alone, and returns at 1615.

30 September 1944:
At 0700 departs Saiki with CD-38 but at 1830 returns to Saiki.

1 October 1944:
At 0540 departs Saiki with CD-38 and at 2150 arrives at Kure.

2 October 1944:
At 0645 departs Saiki but at 1425 returns to port.

3 October 1944:
At 0300 departs Saiki and at 2330 arrives at Kure.

9 October 1944:
At 1000 departs Kure.

11 October 1944:
At 1140 arrives at Moji.

14 October 1944:
At 1120 departs Moji.

15 October 1944:
At 0720 arrives at Miike.

16 October 1944:
At 0250 departs Miike and at 1130 arrives at Sasebo.

18 October 1944:
At 0700, CD-46 departs Imari Bay near Sasebo via Cape St. Jacques, Indochina for Miri, Borneo with kaibokan CD-14, CD-20, CD-34, CD-38, CD-39, and patrol boats PB-102 (ex-USS STEWART, DD-224) and PB-38 escorting convoy MI-23 consisting of EBARA, MUNAKATA, HIKACHI (NISSHO), MATSUMOTO, KOSHIN, EININ, RITSUEI, YAMASONO, ENRYAKU (ENREKI), SHOEI, HIROTA, UNZEN, YOKAI and SHIROTAE MARUs and YUZAN MARU No. 2 and survey ship HAKUSA.

20 October 1944:
Anchors in Raro Wan, Chosen (Korea). Reassigned to 12th Surface Escort Division.

22 October 1944:
At 1640 arrives at the Shushan anchorage, E of Shanghai.

24 October 1944:
75 miles ENE of Foochow, China. At 1000, HIROTA, UNZEN and YOKAI MARUs are detached for Takao escorted by PB-102 and PB-38.

25 October 1944:
Formosa Strait. Cdr (later Rear Admiral-Ret) Richard H. O’Kane’s (USNA ’34) USS TANG (SS-306), running on the surface,is spotted by the lookouts from CD-46. Alerted by a signal flare, the entire convoy commences an emergency turn to starboard.

At 0208, USS TANG torpedoes and sinks EBARA MARU at 25-04N, 119-35E. Eleven crewmen are KIA. MATSUMOTO MARU, following behind EBARA MARU, alters course intent on ramming USS TANG, but one of the torpedoes fired at EBARA MARU strikes onrushing MATSUMOTO MARU’s No. 1 hold. Her bow plunges under and she comes to a halt. Two machine guns on her bridge open fire and drive the submarine under where the water depth is a mere 131 feet.

Aboard HAKUSA, the convoy commodore orders the convoy dissolved. CD-34 is tasked with the rescue of survivors and conducting anti-submarine operations in the area. One cutter and a 6-meter motor boat are lowered to pick up the survivors of MATSUMOTO and EBARA MARUs. USS TANG commences another attack, but one of her remaining torpedoes commences a circular run. The lookouts on CD-34 first spot the torpedo and then witness an explosion, which sinks the submarine.

The convoy speeds onward. Nine American submariners are found drifting on the surface including Captain O’Kane. CD-34 rescues the survivors and later claims to have sunk USS TANG, but, in fact, the submarine was sunk by a defective Mark-18 torpedo that happened to be USS TANG's very last torpedo. CD-34 is detached with the POWs for Takao, Formosa. At 2000, convoy MI-23 arrives at Chuanchow Bay where MATSUMOTO MARU is successfully grounded; however, she lists heavily.

26 October 1944:
MATSUMOTO MARU capsizes and becomes a total loss. There are no casualties. At 0600, the convoy anchors outside Amoy Harbor, and departs the same day at 1800.

27 October 1944:
At 0900 arrives at Mako.

29 October 1944:
At 0700, the convoy departs Mako for Cape St. Jacques.

30-31 October 1944:
Aircraft attack the convoy, but no damage is sustained.

4 November 1944:
At 1803, arrives at Cape St. Jacques.

5 November 1944:
At 1414 CD-14, CD-16, CD-38 and CD-46 depart St Jacques and at 1753 arrives at Saigon. Engages in anti-air combat against Boeing B-29 "Super Fortress" heavy bombers.

8 November 1944:
At 0945 departs Saigon with CD-14, CD-16 and CD-38 and at 1315 arrives at St Jacques.

9 November 1944:
At 0235, departs Cape St. Jacques still escorting MI-23.

12 November 1944:
At 1200 arrives at Singapore.

16 November 1944:
At 0947 departs Singapore for Saigon via St. Jacques with CD-14, CD-16 and CD-46. Enroute, the kaibokan engages in ASW operations.

18 November 1944:
At 1605 arrives at Saigon.

20 November 1944:
CD-46 and CD-14 depart Saigon for Takao, Formosa via Manila escorting convoy SAMA-14A consisting only of MAMIYA escorted by kaibokan CD-16 and CD-38. At 2012 the convoy arrives at St Jacques.

21 November 1944:
At 0356 the convoy departs St Jacques.

25 November 1944:
Manila Bay, off Corregidor. About 2120, LtCdr (later Cdr) Francis A. Greenup's (USNA ’36) USS HARDHEAD (SS-365) torpedoes and sinks kaibokan CD-38 escorting convoy SAMA-14A's store ship MAMIYA. The forward part of the kaibokan sinks immediately at 14-22N, 119-57E, but 93 survivors from the aft part abandon ship and later are rescued by CD-46 and other unidentified ships and taken to Manila.

27 November 1944:
At 0705 arrives at Manila and CD-14, CD-16, CD-38 and CD-46 depart at 1734.

30 November 1944:
At 0026 the four escorts arrive at Takao. At 2104, CD-46 departs Takao for Manila with kaibokan TSUSHIMA, DAITO, CD-14. CD-16 and CD-134 and minesweeper W-101 escorting convoy TAMA-33 consisting of IJA landing craft depot ships SHINSHU and KIBITSU MARUs.

1 December 1944:
As a result of air raids on Manila, convoy TAMA-33 is directed to puts its troops ashore at San Fernando, Luzon. At 2205, the convoy anchors at Pamocctan.

2 December 1944:
At 0630, the convoy departs Pamocctan for San Fernando where it arrives at 2240.

4 December 1944:
At 0830 CD-14, CD-16 and CD-46 depart San Fernando. At 1550 the ships arrive at Lapoc Bay.

5 December 1944:
At 0615 the ships depart Lapoc Bay. At 1830 the ships arrive at Camiguin and depart there at 2330.

6 December 1944:
At 2040 the ships arrive at Fangliao, Formosa.

7 December 1944:
At 0730 the ships departs Fangliao and at 1030 arrive at Saei. At 1700 the warships depart Saei and at 1900 arrive at Takao.

9 December 1944:
At 1500 CD-46 departs Takao with kaibokan CD-14, CD-16, and minesweeper W-101 escorting convoy TASA-18 consisting of tankers AMATO, ENKI, DAIETSU, RYOEI MARUs and TAMON MARU No. 15.

10 December 1944:
TAMON MARU No. 15 has an engine breakdown and is detached with minesweeper W-101 for Hong Kong.

13 December 1944:
At 1500 arrives at Yulin.

14 December 1944:
At 0300 departs Yulin.

15 December 1944:
At 1825 arrives at Van Phong Bay.

16 December 1944:
At 0730 departs Van Phong Bay.

17 December 1944:
At 1530, arrives at St Jacques.

18 December 1944:
At 0725 CD-14, CD-16 and CD-46 depart St Jacques and at 0845 arrive at Saigon.

19 December 1944:
At 1700 CD-14, CD-16 and CD-46 depart Saigon and at 2200 arrive at St Jacques.

20 December 1944:
At 1000, CD-46 departs Cape St. Jacques, Indochina for Takao and Moji with kaibokan CD-14 and CD-16 escorting convoy SATA-04 consisting of YAMAMURA, DAITO, OJIKASAN, DAIRETSU and DAIEI and DAIIKU MARUs.

21 December 1944:
At 2300 arrives at Nha Trang Bay.

22 December 1944:
At 0700 departs Nha Trang Bay. At 2200 arrives at Qui Sande anchorage.

23 December 1944:
At 0700 departs Qui Sande anchorage.

24 December 1944:
At 0100, the convoy arrives at Batangan Bay. CD-14 remains outside on patrol. CD-9 and CD-32 join the escort's ranks. At 0700 the convoy departs.

30 December 1944:
Arrives in the Takao area, but at 0633 a radio message is received warning of possible air raids on the port. The convoy makes for Kirun (Keelung), northern Formosa.

31 December 1944:
At 2230, arrives at Keelung.

2 January 1945:
At 0100, the convoy, now called TAMO-34, departs Keelung for Moji with destroyer KIRI, minesweeper W-17 and subchaser CH-37 as additional escorts.

4 January 1945:
Aircraft strafe the convoy, but only OJIKASAN MARU suffers some minor damage and a number of casualties.

8 January 1945:
At 2250 the convoy arrives at Fukuoka Wan.

9 January 1945:
At 0700, departs Fukuoka Wan, and at 1200, arrives safely at Moji. At 1700 CD-14, CD-16 and CD-46 depart Moji.

10 January 1945:
At 0840 arrives at Kure.

13 January 1945:
At 0945 all three kaibokan are docked for repairs.

18 January 1945:
At 0915 the kaibokan are undocked.

19 January 1945:
At 1710 repairs are completed and CD-46 transfers to Kure Naval port.

20 January 1945:
At 0715 departs Kure, and at 1900 arrives at Moji.

22 January 1945:
At 0600, CD-46 departs Mutsure for Keelung with destroyer KIRI and kaibokan CD-14 and CD-16 escorting convoy MOTA-33. The convoy consists of TEIKA (ex French CAP VARELLA), CLYDE, NIKKO, NANKING, TAKUSAN, SANJIN, MIYAJIMA and SHOKA MARUs.

29 January 1945:
40 miles N of Keelung. LtCdr (later Cdr) Evan T. Shepard’s (USNA ’35) USS PICUDA (SS-382) torpedoes and sinks CLYDE MARU at 25-20N, 121-06E. 972 troops on board, 66 gunners and 61 crewmen are KIA.

30 January 1945:
At 0930 arrives at Keelung.

31 January 1945:
At 0600, CD-46 departs Keelung for Moji with kaibokan CD-14, CD-16 and subchaser CH-19 escorting convoy TAMO-39. The convoy consists of AIZAN, SHUNSHO, DAISHUN, SAMARANG, TETSUYO and TATSUHARU MARUs.

6 February 1945:
At 1820 the convoy anchors off Kyokin To, Chosen.

7 February 1945:
At 0700 departs Kyokin To.

8 February 1945:
Arrives at Moji.

12 February 1945:
At 2200, CD-46 departs Moji for Keelung with light cruiser KASHIMA, destroyer SAKURA, kaibokan CD-14 and CD-16 escorting convoy MOTA-36. The convoy consists of MELBOURNE and NISSHO MARUs. At 1830 the convoy anchors off Mutsure.

13 February 1945:
At 0205 the convoy departs Mutsure.

16 February 1945:
KASHIMA and destroyer SAKURA are detached for Shanghai, China.

18 February 1945:
At 2300 arrives at Keelung.

22 February 1945:
At 2200, CD-46 departs Moji for Keelung with kaibokan CD-14 and CD-16 escorting convoy TAMO-44. The convoy consists of MELBOURNE, NISSHO and KIYOKAWA MARUs. That same day, MELBOURNE MARU hits a mine. She is detached back to Keelung escorted by CD-46.

23 February 1945:
At 0300 CD-46 rejoins the convoy.

24 February 1945:
At 0800 the convoy arrives at Ssu Chiao Shan.

25 February 1945:
At 2200 the departs Ssu Chiao Shan.

28 February 1945:
At 1430 arrives at Mutsure.

1 March 1945:
At 0800 CD-14, CD-16 and CD-46 depart Mutsure and at 0900 arrive at Moji.

3 March 1945:
At 0800 departs Moji and at 0845 arrives at Hikoshima where the ship is docked for repairs.

8 March 1945:
At 1700 CD-14 and CD-46 depart Hikoshima and at 1725 arrive at Moji.

11 March 1945:
At 0830 CD-14 and CD-46 depart Moji briefly, but both return to Moji at 1200.

17 March 1945:
At 0705 CD-14, CD-16 and CD-46 depart Moji, and at 0850 arrive at Mutsure.

18 March 1945:
At 1400 CD-14, CD-16 and CD-46 depart Mutsure on an anti submarine sweep.

19 March 1945:
At 0740 the ships arrive at Tsutsu Wan, Tsushima and depart at 1800.

20 March 1945:
At 1005 the ships arrive at Kobun Island, Chosen.

23 March 1945:
At 1830 CD-46 departs Kobun Islsand.

24 March 1945:
At 0815 CD-46 arrives back at Kobun Island.

27 March 1945:
At 1830 CD-16 and CD-46 depart Kobun Island.

29 March 1945:
At 0912 CD-16 and CD-46 depart Kobun Island.

31 March 1945:
At 0730 CD-16 and CD-46 arrive back at Kobun Island.

2 April 1945:
At 1830 CD-16 and CD-46 depart Kobun Island.

3 April 1945:
At 0830 CD-46 arrives back at Kobun Island.

7 April 1945:
At 1200 CD-14, CD-16, CD-46, CD-112 and CD-132 all depart Kobun Island on an anti submarine sweep.

8 April 1945:
At 1400 CD-16 and CD-46 arrive back at Kobun Island.

16 April 1945:
At 1830 departs Kobun island.

17 April 1945:
At 0715 arrives back at Kobun Island.

18 April 1945:
At 1030 CD-16 and CD-46 depart Komun Island.

20 April 1945:
At 1300 CD-16 and CD-46 arrive at Komun Island.

29 April 1945:
At 1530 CD-14, CD-46 and CD-132 depart Kobun Island.

30 April 1945:
At 1900 the ships arrive at an unknown location.

17 August 1945:
Yellow Sea, off Mokpo, Korea. CD-46 hits a mine laid by USAAF B-29 “Superfortresses” and sinks at 34-51N, 126-02E.

15 September 1946:
Removed from the Navy List.


-Bob Hackett and Peter Cundall

Special thanks to Mr. Gilbert Casse of France and Mr. Sander Kingsepp of Estonia.

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