KUSENTEI!

IJN Subchaser CH-47:
Tabular Record of Movement

© 2005-2015 Bob Hackett, Sander Kingsepp and Peter Cundall

Revision 6


15 January 1943:
Laid down at Koyagi Island.

15 June 1943:
Launched at the Kawaminami shipyard and numbered CH-47

12 August 1943:
Completed. Registered in the Yokosuka Naval District and assigned to the Yokosuka Guard Force.

19 August 1943:
Departs Inland Sea escorting KOJUN MARU to Tokyo Bay.

27 August 1943:
Departs Yokosuka for Truk escorting convoy 3827B consisting of supply ship SHINSEI and SHONAN MARUs and Oil Tanker No. 6010.

28 August 1943:
10 miles W of Mikura Shima. The convoy is attacked by LtCdr (later Cdr) Thomas L. Wogan's (USNA ’30) old USS TARPON (SS-175). At 0445, SHINSEI MARU is damaged by a torpedo at 33-52N, 139-29E. The convoy turns back to Japan.

29 August 1943:
Arrives at Tateyama.

10 September 1943:
Departs Tokyo Bat escorting convoy 1910 bound for Hokkaido.

29 November 1943:
Departs Hokkaido with auxiliary patrol boat KONGO MARU No. 2 escorting convoy 2129.

8 December 1943:
Off Kinkasan meets up with convoy 2207 and heads south.

9 December 1943:
Meets up with convoy 1208 headed north and escorts the convoy to off Kinkasan.

17 December 1943:
At 0100 east of Kinkasan lightbuoy meets up with convoy 2215 headed south consisting of two unidentified merchant ships.

26 December 1943:
At 1315 off Onagawa takes over from patrol boat KONGO MARU No. 2 escort of convoy No. 1225A consisting of HAKOZAKI MARU heading north. At 1915 assumes escort of a southbound convoy number unknown consisting of three unidentified merchant ships.

15 May 1944:
CH-47 and CH-45 and minelayer YAEYAMA depart Manila for Halmahera Island escorting convoy H-26 consisting of the ETAJIMA, KENWA, TEMPEI, AKAGISAN, DAIJUN, TAIYU, TOUN and SHIRAHAMA MARUs and possibly SHINSEI MARU.

22 May 1944:
Off Davao, Philippines. At about 0100, LtCdr (later Rear Admiral-Ret) Brooks J. Harral's (USNA ’32) USS RAY (SS-271) makes a radar-assisted night attack on the surface on the convoy. In a series of attacks, Harral torpedoes TEMPEI MARU. The ship is carrying a cargo of gasoline and rice and the gasoline erupts in flames. She sinks at 05-16S, 127-42E. 11 passengers, five gunners and 19 crewmen are KIA.

23 May 1944:
At about 0500, the USS RAY makes a radar-assisted attack on the surface and torpedoes DAIJUN MARU, loaded with 16 passengers, 4022 M3 war supplies and 2 Daihatsu barges. She sinks at 02-42N, 128-08E. Two gunners and three crewmen are killed. CH-47 and the remainder of H-26 arrive at Kau Bay, Halmahera late that day.

1 June 1944:
Arrives at Onagawa.

7 June 1944:
Departs Onagawa and later meets up with convoy No. 2607, then convoy No. 1608.

12 June 1944:
Arrives at Onagawa.

14 June 1944:
Departs Onagawa but later that day returns to port.

18 June 1944:
Departs Onagawa.

21 June 1944:
Arrives at Onagawa.

24 June 1944:
Departs Onagawa.

28 June 1944:
Arrives at Onagawa.

30 June 1944:
Departs Onagawa and meets up with convoy No. 1629 and then AWA MARU.

3 July 1944:
Arrives at Onagawa.

8 July 1944:
Departs Onagawa.

9 July 1944:
At 34 degrees and 4 miles off Kobezaki spots a persicope. At 1710 off the coast off Kobezaki joins minesweeper W-27.

13 July 1944:
Arrives at Onagawa.

18 July 1944:
Departs Onagawa.

23 July 1944:
Undergoes repairs at an unspecified location, probably near Onagawa.

Early- mid August 1944:
Undergoes repairs.

17 August 1944:
Repairs completed and arrives at Onagawa.

18 August 1944:
Departs Onagawa for Yokosuka.

September 1944:
Conducts patrols off Chichi-Jima, Ogasawara Gunto (Bonin Islands).

18 September 1944:
Departs Tateyama with destroyer HATAKAZE escorting convoy No. 3913A consisting of JUZAN MARU I GO. En route to Chichi-Jima the convoy stops at Hachijo Jima where JUZAN MARU I GO commences towing the midget submarine HA-71.

24 September 1944:
The convoy arrives at Chichi-Jima.

December 1944:
Tokyo. Undergoes repairs at Ishikawajima.

16 January 1945:
At 1200, CH-47, CH-42, kaibokan CD-12, CD-56 and minesweeper W-29 depart Tateyama escorting convoy 3115 consisting of KURETAKE, YONEYAMA MARUs and NANYO MARU No. 1 and UNYO MARU No. 6.

19 January 1945:
Arrives at Futami, Chichijima.

17 February 1945:
CH-47 is damaged by aircraft at 32-45N, 111-56E.

27 February 1945:
Shiono-Misaki, Honshu. Carrier aircraft from Vice Admiral (later Admiral) Marc A. Mitscher's (USNA ’10) (former CO of USS HORNET) Task Force 58 attack CH-47, but inflict only minor damage. The ship is docked for repairs and maintenance

18 March 1945:
The ship is undocked and departs Tokyo arriving at Tateyama later that day. For the rest of the month operates in the Izu Peninsula. Escorts convoys in the Shimoda area. [1]

19 March 1945:
Departs Tateyama escorting convoy No. 3318 consisting of NIKKO MARU No. 2. Later that day arrives at Hachijo Jima.

22 March 1945:
Departs Hachijo Jima escorting convoy No. 4322 consisting of NIKKO MARU No. 2 and later that day arrives at Shimoda.

23 March 1945:
Departs Shimoda and later that day arrives at Yokohama.

25 March 1945:
Departs Tokyo Bay escorting the ammunition ship SOYA as far north as Inubo Zaki.

2 April 1945:
Departs Yokosuka.

3 April 1945:
Arrives at Shimoda.

4 April 1945:
Departs Shimoda escorting NIKKO MARU No. 2 and later that day arrives at Hachijo Jima.

5 April 1945:
Departs Hachijo Jima and later that day arrives at Shimoda.

6 April 1945:
Departs Shimoda escorting NANKO MARU.

7 April 1945:
Arrives at Hachijo Jima.

8 April 1945:
Departs Hachijo Jima escorting TOKO MARU.

9 April 1945:
Arrives at Shimoda and departs later that day escorting TOKO MARU.

10 April 1945:
Arrives at Hachijo Jima and later that day departs escorting TOKO MARU.

11 April 1945:
Arrives at Shimoda.

12 April 1945:
At 0430 departs Shimoda escorting TOKO MARU and later that day arrives at Hachijo Jima.

13 April 1945:
At 1630 departs Hachijo Jima escorting TOKO MARU.

14 April 1945:
Arrives at Shimoda.

15 April 1945:
Departs Shimoda.

16 April 1945:
Arrives at Yokosuka and remains there for the rest of the month and much of May.

26 May 1945:
Arrives at Shimoda escorting cable ship HARUSHIMA MARU.

27 May 1945:
Departs Shimoda.

28 May 1945:
Arrives at Yokosuka.

10 July 1945:
Off Yamada Bay, northern Honshu. At about 1100, LtCdr Raymond H. Bass’ (USNA ’31) USS RUNNER II (SS-476) torpedoes and sinks minesweeper W-27 at 39-20N, 142-07E. W-27 is escorting SHINYO MARU with W-33 and submarine chaser CH-47 when attacked. (UNYO MARU No. 10 was also in the same area). She receives two hits to starboard and sinks in 90 seconds.

15 July 1945:
Yokosuka. Assigned to the 1st Special Attack Squadron.

15 August 1945:
The crew of CH-47 is notified of the termination of hostilities with the Allied powers.

15 September 1945:
Removed from the Navy List,

1 December 1945:
Assigned to the Repatriation Service. Designated a special cargo ship.

20 April 1946:
Departs Shanghai on her first repatriation voyage.

22 April 1946:
Arrives at Hakata.

26 April 1946:
Departs Hakata.

28 April 1946:
Arrives at Shanghai.

2 May 1946:
Departs Shanghai on her second and final repatriation voyage.

4 May 1946:
Arrives at Hakata.

1 October 1947:
Delivered to the United States as war compensation.

7 October 1947:
Scuttled as gunnery target in 35-44N, 123-72E.


Authors' Notes:
[1] In 1854, Commodore Oliver Hazard Perry landed at Shimoda. It was the site of the signing of the Japan-American treaty of trade and amity.

Thanks to Mr. Gilbert Casse of France.

-Bob Hackett, Sander Kingsepp and Peter Cundall.


Back to Subchaser Page