© 2006-2007 Bob Hackett, Sander Kingsepp and Peter Cundall
Revision 1
27 February 1942:
Tokyo. Laid down at the Uraga Dockyard as kaibokan No. 313.
20 August 1942:
No. 313 is named OKI.
20 October 1942:
Launched.
28 March 1943:
Completed and registered in the Sasebo Naval District. LtCdr Osamu Hisashi is the Commanding Officer.
14 May 1943:
At 1300, OKI departs Yokosuka escorting convoy No. 3514 consisting of HAKOZAKI, KAMIKAWA, and TONEI MARUs.
21 May 1943:
Destroyer ASANAGI meets the convoy N of Truk.
22 May 1943:
At 1400, arrives at Truk. OKI is detached from convoy No. 3514 and joins convoy No. 3415 that departed Yokosuka for Rabaul on 14 May consisting of KAMIKAWA, HAKOZAKI and TONEI MARUs.
23 May 1943:
At about 1400 (JST), convoy No. 3415 arrives at Truk. OKI is detached and replaced by subchasers CH-12 and CH-37.
26 May 1943:
OKI departs Truk for Yokosuka with minelayer TOKIWA and an unidentified auxiliary gunboat escorting convoy No. 4526 consisting of fleet oiler NOTORO. Enroute, the ships are joined by aircraft transport MOGAMIGAWA MARU.
3 June 1943:
In the late afternoon, LtCdr Nicholas J. Nicholas' USS SALMON (SS-182) attacks the convoy. He fires seven torpedoes and claims hits on MOGAMIGAWA MARU and the auxiliary gunboat, but in actuality his attacks are unsuccessful.
5 June 1943:
Arrives at Yokosuka.
July 1943:
LtCdr Kobayashi Hinomoto assumes command.
3 August 1943:
OKI departs Yokosuka for Truk escorting convoy No. 3803A consisting of
TATSUURA, TAIAN and SHIGANOURA MARUs.
14 August 1943:
The convoy arrives at Truk. Later that same day, convoy No. 3803A departs Truk for Saipan now escorted by OKI and kaibokans CH-25, CH-33 and auxiliary patrol boat TOSHI MARU No. 3.
19 August 1943:
Convoy No. 3803A arrives at Truk.
27 August 1943:
OKI departs Truk for Yokosuka escorting convoy No. 4827 consisting of TAGONOURA and NICHII MARUs.
September 1943:
LtCdr Sugiyama Tadayoshi assumes command.
3 September 1943:
At 1955, LtCdr (later Rear Admiral-Ret) Bafford E. Lewellen's old USS POLLACK (SS-180) torpedoes and sinks
TAGONOURA MARU at 33-43N, 143-00E. OKI counterattacks POLLACK and drops 17 depth charges unsuccessfully. Later, OKI rescues 149 survivors. Probably arrives at Yokosuka that same day or the next.
21 September 1943:
At 1300, OKI, departs Tokyo Bay for Truk with kaibokan FUKUE escorting convoy No. 3921 consisting of KIKUKAWA, MATSUYO, HARUNA, KAIKO and TAIAN MARUs and NANKAI MARU No. 2.
28 September 1943:
SW of Anatahan Island, Marianas. At 0715, TAIAN MARU is detached for Saipan escorted by auxiliary minesweeper FUMI MARU No. 2 and auxiliary subchaser KYO MARU No. 10 that steamed out to meet her. At 1422, LtCdr (later Rear Admiral) William S. Post's USS GUDGEON (SS-211) torpedoes and sinks TAIAN MARU. The two escorts drop 17 depth charges unsuccessfully.
1 October 1943:
Convoy No. 3921 arrives at Truk.
3 October 1943:
Departs Truk in convoy 4003 consisting of CHIHAYA, HAKOZAKI, ASAHISAN and SHIGANOURA MARUs escorted by Oki.
11 October 1943:
the convoy arrives at Yokosuka.
20 October 1943:
departs Yokosuka in convoy 3020 consisting of KEMBU, UYO and AKIBASAN MARUs escorted by OKI.
31 October 1943:
The convoy arrives at Truk.
14 November 1943:
At 1400, OKI departs Yokosuka with destroyer YUKIKAZE escorting fleet convoy 3115 consisting of transport (ex-sub tender) HEIAN MARU, food supply ship IRAKO and aircraft transport KEIYO MARU.
15 November 1943:
OKI is reassigned to the General Escort Command's Second Surface Escort Division.
16 November 1943:
Lookouts on HEIAN MARU sight a submarine (probably USS DACE (SS-247) travelling in the opposite direction.
19 November 1943:
The convoy is attacked by LtCdr Joseph Enright's DACE on her first patrol. Enright targets HEIAN MARU. A torpedo barely misses the bow of OKI. She counter-attacks with three depth-charges. At 0724, a periscope is sighted 800 meters off the port beam. OKI attacks the submarine and drops four DCs; then contact is lost. After 1130, she detects a submarine and drops two DCs. Even HEIAN MARU drops a DC, but DACE escapes undamaged.
23 November 1943:
Arrives at Truk at 1550.
25 November 1943:
At 1400, departs Truk escorting TAMASHIMA MARU.
11 December 1943:
At 1000, departs Yokosuka in convoy 3211A consisting of MITAKESAN and HAKOZAKI MARUs escorted by OKI, patrol boat No. 46 and submarine chaser CH-31.
14 December 1943:
HAKOZAKI MARU is detached for Chichijima with engine trouble.
20 December 1943:
At 0800, the convoy arrives at Truk.
8 January 1944:
LtCdr Ouchi Yoshibumi assumes command.
20 January 1944:
OKI departs Yokosuka for Truk escorting convoy No. 4120 consisting of HOKI, SAN FRANCISCO and KOWA MARUs and UNKAI MARU No. 6.
4 February 1944:
Arrives at Truk.
13 February 1944:
OKI departs Truk for Yokosuka with kaibokan MANJU
and subchaser CH-31 escorting convoy 4212 consisting of fleet oiler NOTORO, stores supply ship IRAKO and TATSUURA and HIBI MARUs.
27 February 1944:
Arrives at Yokosuka.
5 March 1944:
At 0800, departs Chichijima with kaibokan MANJU and auxiliary submarine chaser TAKUNAN MARU No. 8 escorting "Higashi Matsu 1A" convoy consisting of TATSUHARU, BINGO and KEIYO MARUs.
12 March 1944:
At 1400, the convoy arrives at Truk.
17 March 1944:
OKI departs Truk escorting a convoy consisting of sub
tender TSUKUSHI MARU and KAZUURA, IMIZU MARUs and minelayer YURISHIMA.
24 March 1944:
Arrives at Saipan. Departs later that day.
27 March 1944:
Arrives at Yokosuka.
1 April 1944:
At 1100, OKI, departs Tokyo Bay as part of the escort of convoy Higashi-Matsu No. 4. The ships and their destinations are: Saipan: SHOUN, TOKO, TAKASAN, AKIKAWA KOKO, SHIRAMINE, TAIKAI, KAKOGAWA and MAKASSAR MARUS. Guam: MIMIASAKA, TOAN, AZUCHISAN and NISSU MARU s and UNYO MARU No. 8 Truk: Fleet supply ship KINESAKI, SHOZUI, TATBEI, SHIMA, SHINYO and HARVRE MARU s. Palau: Fleet supply ship MAMIYA, TENRYUGAWA, TAIAN and TOSEI MARU s and SHINSEI MARU No. 5 Yap: SHINSEI MARU. The convoy commander is Rear Admiral Kiyota Takahiko (former CO of NACHI) in
destroyer SAMIDARE. The other escorts include destroyer ASANAGI, torpedo-boat HIYODORI, kaibokans AMAKUSA, MIKURA, FUKUE, CD-2, CD-3 and subchaser CH-50.
3 April 1944:
5 miles S of Tori-Shima. At about 1457, LtCdr
Lewellen's USS POLLACK torpedoes and sinks TOSEI MARU at 30-14N,
139-45E. The escorts counterattack POLLACK and drop 55 depth charges
unsuccessfully.
8 April 1944:
N of Saipan. At 0228 (JST), LtCdr (later Vice Admiral)
Frederick J. Harlfinger's USS TRIGGER (SS-237) fires four torpedoes at the
convoy, but fails to get any hits. While the troopships are diverted to the
west, OKI and SAMIDARE counter-attack with depth-charges. Harlfinger runs at 300
feet or more for 17 hours as six escorts dog his trail and rain down numerous
depth charges. Six DCs explode extremely close by and damage TRIGGER.
9 April 1944:
62 miles WNW of Saipan. At 1625, LtCdr (later Captain)
Slade D. Cutter's USS SEAHORSE (SS-304) torpedoes and hits MIMASAKA MARU at
15-30N, 145-00E. MIMASAKA MARU is taken in tow by TOAN MARU. The escorts counterattack
SEAHORSE unsuccessfully.
10 April 1944:
At about 0100 (JST), MIMASAKA MARU founders. She is
carrying over 1,000 Naval personnel, most of whom are rescued. The convoy
arrives at Saipan, then is split into separate groups that continue on to their
respective destinations.
15 April 1944:
At 1400, OKI departs Saipan with destroyer ASANAGI, torpedo-boat
HIYODORI, and subchaser CH-50 escorting the return of convoy "Higashi-Matsu No. 4" consisting of MAKASSAR, SHIRAMINE, TAKASAN, TOKO, KAKOGAWA, NISSHU and TAIKAI MARUs and UNYO MARU No. 8.
23 April 1944:
Arrives at Tokyo.
4 May 1944:
At 1400, OKI departs Tateyama, Tokyo Bay for Saipan with
destroyers ASANAGI, MINAZUKI, torpedo boat OTORI, kaibokan CD-24, subchasers
CH-31, CH-32 and CH-52 and auxiliary subchaser SHONAN MARU No. 8 escorting
convoy No. 3503 consisting of KEIYO, HAKOZAKI, HIYORI, ENOSHIMA, MINO, OSAKA,
TAIKOKU, FUKKO, TATSUTAGAWA. SHINFUKU, FUKOKU, KOHO, KOJUN and SHUNSEN MARUs.
10 May 1944:
WSW of Iwo Jima. At 1743, LtCdr Russell Kefauver’s USS
TAMBOR (SS-198) torpedoes and damages KEIYO MARU, but she is able to continue.
The escorts drop 57 depth charges on TAMBOR, but she evades and escapes.
14 May 1944:
W of Tinian. At 0515, OKI, torpedo boat OTORI, and
auxiliary subchaser SHONAN MARU No. 8 are detached to escort KOHO and SHUNSEN
MARUs to Guam.
SW of Apra harbor, Guam. At 1431, LtCdr Malcolm E. Garrison’s USS SAND
LANCE (SS-381) torpedoes and sinks KOHO MARU at 13-43N, 144-42E. The escorts
depth charge SAND LANCE, but she survives and escapes. Later that day, the
escorts and SHUNSEN MARU arrive at Guam.
20 May 1944:
At 1800, OKI departs Saipan with kaibokan NOMI and
subchaser CH-30 escorting convoy Higashi Matsu No. 8 consisting of MANJU, TOSAN
and NOTO MARUs,
26 May 1944:
Arrives at Tokyo.
June 1944:
Yokosuka. A Type 13 air search radar is installed.
6 June 1944:
OKI departs Yokosuka for Saipan with kaibokan AMAKUSA and NOMI, destroyer MATSUKAZE and subchasers CH-16 and CH-18 escorting convoy No. 3606 consisting of SUGIYAMA, SHINROKU, KANSEISHI, KAIKO and HAKUYO MARUs. Soon after leaving SUGIYAMA MARU is attacked and damaged by LtCdr (later Captain) James B. Grady's USS WHALE (SS-239) at 31-06N, 142-24E, but the ship is taken in tow.
9 June 1944:
NE of Chichi-Jima. LtCdr Edmund K. Montross' USS SWORDFISH (SS-193) torpedoes and sinks MATSUKAZE at 26-59N, 143-13E. The convoy steams to Chichi-Jima arriving later that day. It is decided to unload the convoy and return to Yokosuka.
14 June 1944:
At 0100, OKI departs Chichi-Jima with destroyer SATSUKI, kaibokan AMAKUSA and auxiliary minesweepers SHOWA MARU Nos.7 and No. 8 escorting the "Miho Maru" convoy consisting of MIHO, KANSEISHI, TOYOKAWA and AWAJI MARUs.
15 June 1944:
About 150 km SE of Tori Shima. At 0103, LtCdr Montross' SWORDFISH torpedoes and sinks KANSEISHI MARU at 29-30N, 141-14E. The convoy puts into Yaene Wan, Hachijo Jima for safety departing later that day at 1800.
17 June 1944:
At 1400, arrives Yokosuka.
2 July 1944:
At 1800, OKI departs Yokosuka for Chichi-Jima with light-cruiser YASOJIMA, kaibokan AMAKUSA, minesweeper W-20, auxiliary minesweeper SHOWA MARU No.7, auxiliary subchaser CHa-9 and an unknown warship escorting convoy No. 3702 consisting of SHIBAZONO, EIKO, DAIJI, RYUKO and YAEI MARUs, UNKAI MARU No.7 and Oil Tanker No. 3995.
4 July 1944:
After receiving reports of an enemy carrier task force conducting raids on Chichi-Jima, the convoy reverses course for the homeland and later is dissolved.
18 July 1944:
Reassigned to the Yokosuka Naval District.
1 September 1944:
OKI departs Yokohama for Chichi-Jima with torpedo-boat CHIDORI and subchaser CH-51 escorting convoy No. 3901 consisting of KYUSHU MARU and TOKAI MARU No. 4.
10 September 1944:
Arrives at Chichi-Jima.
11 September 1944:
Departs Chichi-Jima for Yokosuka with torpedo-boat CHIDORI escorting convoy No. 4910B consisting of HASSHO MARU. At 1030, that same day, the convoy is attacked by three B-24 "Liberator" heavy bombers . Near-misses by bombs damage HASSHO MARU so severely that she has to be abandoned and scuttled by gunfire.
13 September 1944:
At 1150, arrives at Yokosuka .
11 October 1944:
At 0800, OKI departs Yokosuka for Iwo Jima with subchaser CH-51 escorting convoy No. 3009 consisting of MUTSUKI MARU.
16 October 1944:
The convoy arrives at Chichi-Jima and embarks 120 troops.
18 October 1944:
At 0800, the convoy departs Chichi-Jima. At 0930, the convoy
arrives at Haha-Jima, but while waiting to unlaod troops, is attacked by a force of B-24 "Liberators".
MUTSUKI MARU suffers several near-misses by 500-lb bombs. She floods and, at 1200, has to be beached, a total loss.
13 November 1944:
At 0700, departs Tateyama in convoy 3112 consisting of Kisaragi and Hokkai Maru's escorted by Oki, auxiliary submarine chaser Takunan Maru No.6 and Takunan Maru No.8.
16 November 1944:
At 0300, LtCdr Frederick A. Gunn’s USS SCABBARDFISH (SS-397) torpedoes and sinks KISARAGI MARU at 29-03N, 142-12E.
17 November 1944:
At 0700, arrives at Chichijima.
18 November 1944:
Chichi-Jima for Yokosuka with auxiliary subchasers TAKUNAN MARU No. 6 and TAKUNAN MARU No. 8 escorting convoy No. 4118 consisting of HOKKAI and KYUSHU MARUs.
21 November 1944:
At 2120, LtCdr Gunn’s SCABBARDFISH torpedoes and sinks HOKKAI MARU at 33-20N, 142-00E. LtCdr Gunn also torpedoes and blows the bow off OKI at 33-20N, 142-01E. Engineering officer LtCdr Okabe Zempachi and 34 sailors are killed in the explosion and four wounded.
23 November 1944:
At 0930, the convoy arrives at Yokosuka. Later, OKI
also arrives under tow by another unidentified kaibokan.
November 1944:
Tokyo. Undergoes repairs, probably at Uraga Dock yard.
February 1945:
LtCdr Ishikawa Mutsuo assumes command.
5 March 1945:
Reassigned to the General Escort Command's First Escort Fleet's 103rd Escort Squadron.
5 May 1945:
Off Inchon, Korea. OKI is damaged by Consolidated PB4Y "Liberator" heavy bombers and Martin PBM "Mariner" patrol bombers of Fleet Air Wing 1 at 37-36N, 126-00E.
2 June 1945:
At 1700, departs Pusan, Korea for Tsingtao, China with kaibokan CD-13 escorting convoy FUTA-01 consisting of YAHIKO MARU.
3 June 1945:
At 1015, the convoy is attacked by aircraft, but does not sustain damage. At 1355, the convoy anchors at Kai Island, SW Korea. OKI is detached and returns to Pusan.
20 June 1945:
OKI departs Tsingtao with kaibokan CD-72 and an unidentified minesweeper escorting convoy TAFU consisting of TAIUN MARU No. 1, KONRI GO, SHINNEISHO GO, CHOKO MARU and an unidentified ship.
1 July 1945:
Yellow Sea, near Changshan Got. At 1100, in dense fog, the convoy is ambushed by LtCdr Frank C. Lynch's USS HADDO (SS-255) on the surface in very shallow water. Lynch torpedoes and sinks TAIUN MARU No. 1, KONRI GO and SHINNEISHO GO. The fog lifts somewhat and one of the kaibokan charges HADDO . The kaibokan passes HADDO on a reciprocal course firing all its guns. Lynch orders flank speed and dives when the water reaches a depth of only 80 feet. The two kaibokan follow. Lynch stops his engines and fires two new Mark-27 acoustic "Cutie" homing torpedoes. One hits CD-72 aft and sinks her. OKI breaks off her attack to rescue survivors.
10 July 1945:
OKI and the 103rd Squadron is reassigned to Vice Admiral Kishi Fukuji's (40)(former CO of FUSO) Seventh Fleet.
July 1945:
LtCdr Okami Kazuo assumes command.
19 August 1945:
Off Pusan harbor. OKI is damaged by a mine.
20 November 1945:
Removed from the Navy List.
1 December 1945:
Assigned to the Allied Repatriation Service.
8 April 1946:
Departs Sasebo
19 April 1946:
Arrives at Rabaul.
21 April 1946:
Departs Rabaul.
25 April 1946:
Arrives at Guam and departs later that day.
30 April 1946 :
Arrives at Uraga.
3 May 1946:
Departs Uraga.
10 May 1946:
Arrives at Saigon.
13 May 1946:
Departs Saigon.
15 May 1946:
Arrives at Bangkok.
16 May 1946:
Departs Bangkok.
22 May 1946:
Arrives at Takao.
23 May 1946:
Departs Takao.
25 May 1946:
Arrives at Sasebo.
6 June 1946-20 June 1946:
Under repair at Sasebo.
2 July 1946:
Departs Sasebo.
5 July 1946:
Arrives at Korojima near Tsientsin.
6 July 1946:
Departs Korojima.
9 July 1946:
Arrives at Hakata.
14 July 1946:
Departs Hakata.
17 July 1946:
Arrives at Koniya.
21 July 1946:
Departs Koniya.
24 July 1946:
Arrives at Hakata.
7 August-19 August 1946:
Under repairs at Sasebo.
21 August 1946:
Departs Sasebo.
25 August 1946:
Arrives at Korojima.
29 August 1946:
Departs Korojima.
1 September 1946:
Arrives at Hakata.
8 September 1946:
Departs Hakata.
11 September 1946:
Arrives at Korojima.
14 September 1946:
Arrives at Korojima.
18 September 1946:
Arrives at Hakata.
24 September 1946:
Departs Hakata.
27 September 1946:
Arrives at Korojima.
29 September 1946:
Departs Korojima.
2 October 1946:
Arrives at Hakata.
12 October 1946:
DepartsHakata.
15 October 1946:
Arrives at Korojima.
20 October 1946:
Departs Korojima.
23 October 1946:
Arrives at Hakata.
28 October 1946:
Departs Hakata.
30 October 1946:
Arrives at Kagoshima.
31 October 1946:
Departs Kagoshima.
1 November 1946:
Arrives at Okinawa and departs later that day.
3 November 1946:
Arrives atKagoshima.
7 November 1946:
Departs Kagoshima.
9 November 1946:
Arrives at Okinawa and departs later that day.
12 November 1946:
Arrives at Kagoshima.
21 November 1946:
Departs Kagoshima.
23 November 1946:
Arrives at Okinawa and departs later that day.
25 November 1946:
Arrives at Kagoshima.
28 November 1946:
Departs Kagoshima.
1 December 1946:
Arrives at Okinawa.
2 December 1946:
Departs Okinawa.
4 December 1946:
Arrives at Kagoshima.
29 August 1947:
Handed over to Nationalist China at Tsingtao and renamed KU AN.
1949:
Taken over by the People's Republic of China (PRC) and renamed CH' ANG PAI.
1955:
Rearmed by the PRC Navy.
1976:
Rearmed and refitted by the PRC Navy.
Authors' Notes:
Thanks for assistance go to Dr. Higuchi Tatsuhiro of Japan. Thanks also go to Mr. Aki of Japan and Matthew Jones of Ohio for help in identifying kaibokan COs.
-Bob Hackett, Sander Kingsepp and Peter Cundall.
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