SENSUIKAN!

(RO-63 - Scanned from "Submarines of World War II" by E. Bagnasco)

IJN Submarine RO-64:
Tabular Record of Movement

© 2001-2011 Bob Hackett & Sander Kingsepp:
Revision 1


15 October 1923:
Kobe. Laid down Mitsubishi Shipbuilding as a 990-ton L4 submarine.

19 August 1924:
Launched and designated RO-64.

1 November 1924:
LtCdr (later Vice Admiral) Hiraoka Kumeichi (39)(former CO of RO-60) is posted Chief Equipping Officer.

15 January 1925:
LtCdr (later Vice Admiral) Marquis Daigo Tadashige (40) is posted Chief Equipping Officer.

30 April 1925:
Completed and commissioned in the IJN. Her Equipping Officer, LtCdr Daigo is the Commanding Officer.

1 December 1925:
Lt (later Rear Admiral) Koda Takero (41) is posted CO. LtCdr Daigo is posted to the staff of Yokosuka Naval District.

1 December 1926:
LtCdr (later Rear Admiral) Matsuzaki Akira (43) is posted CO. Lt Koda is promoted LtCdr and is later posted CO of I-56.

10 December 1928:
Vessel placed in Reserve. LtCdr Matsuzaki is later posted to the Naval General Staff.

1 November 1929:
Lt (later Rear Admiral, posthumously) Tamaki Tomejiro (45) (former XO/Chief Torpedo Officer, I-54) is posted CO.

30 November 1929:
Lt Tamaki is promoted LtCdr.

1 December 1930:
LtCdr (later Rear Admiral) Sasaki Hankyu (45) (former CO of RO-64) is posted CO. In a change-of-command swap, LtCdr Tamaki is posted CO of RO-62.

1 December 1931:
Lt (later Cdr) Nagai Hiroaki (48) is posted CO. LtCdr Sasaki is posted Chief Equipping Officer of I-65.

1 December 1932:
LtCdr (later Rear Admiral, posthumously) Shimizu Taro (48) (current CO of RO-63) is posted CO as an additional duty. Lt Nagai is promoted LtCdr and later posted CO of I-71.

24 March 1933:
Lt (later Cdr) Hatanaka Sumihiko (49) is posted CO. LtCdr Shimizu resumes full-time command of RO-63.

15 November 1933:
Lt Hatanaka is promoted LtCdr.

15 November 1935:
LtCdr Hatanaka is posted CO of I-61 as an additional duty.

27 January 1936:
LtCdr Hatanaka resumes full-time command of RO-64.

15 February 1936:
LtCdr (later Captain, posthumously) Izu Juichi (51) is posted CO. LtCdr Hatanaka is later posted CO of I-73.

30 March 1937:
LtCdr (later Captain, posthumously) Hanabusa Hiroshi (51) is posted CO. LtCdr Izu is later posted CO of I-65.

15 November 1937:
LtCdr (later Captain) Ikezawa Masayuki (52) is posted CO. LtCdr Hanabusa is posted CO of RO-63.

19 March 1938:
LtCdr (later Captain) Yoshitomi Zenji (52) is posted CO. LtCdr Ikezawa is later posted CO of I-74.

20 March 1939:
LtCdr Yoshitomi is posted CO of I-122 as an additional duty.

1 April 1939:
LtCdr (later Captain, posthumously) Ogawa Tsunayoshi (50) (former CO of KURI) is posted CO. LtCdr Yoshitomi assumes full-time command of I-122.

20 March 1940:
Vessel placed in Reserve. LtCdr Ogawa is later posted CO of I-64.

26 July 1940:
LtCdr (later Captain, posthumously) Uno Kameo (53) is posted CO.

2 December 1941: Operation "Z":
The coded signal "Niitakayama nobore (Climb Mt. Niitaka) 1208" is received from the Combined Fleet.* It signifies that hostilities will commence on 8 December (Japan time).

4 December 1941:
Kwajalein, Marshall Islands. RO-64 is in Captain Nagai Takeo's (47)SubDiv 33, in Rear Admiral Onishi Shinzo's (42)SubRon 7 in Vice Admiral (later Admiral) Inoue Shigeyoshi's (37)(former CO of HIEI) Fourth Fleet with RO-63 and RO-68. Cdr LtCdr Uno Kameo is the Commanding Officer.

Departs Kwajalein with RO-68 to reconnoiter the Phoenix islands and to destroy the "seaplane base” located on Howland.

5 December 1941:
Reconnoiters Majuro.

7 December 1941:
Arrives off Phoenix islands.

10 December 1941:
Arrives off Howland and commences a periscopic reconnaissance. Considering the sea state and that his boat may have been spotted, LtCdr Uno decides against sending a landing party to destroy the shore facilities.

11 December 1941:
At 0200 (JST), RO-64 closes to within 2,200 yards, then opens fire with her deck gun, She targets the wireless and weather station, runways, depots, barracks and the lighthouse. As a result of her one-hour shelling, a number of buildings are set ablaze and there are several casualties among the locals. Between 1500 and 1520 (JST), RO-64 shells Baker Island that is also bombarded by RO-68.

15 December 1941:
Returns to Kwajalein with RO-68.

24 December 1941:
Departs Kwajalein for Wake.

27 December 1941:
Arrives off Wake.

28 to 30 December 1941:
Patrols E of Wake, then arrives at Wake.

1 January 1942:
Departs Wake for Truk.

6 January 1942:
Arrives at Truk.

15 January 1942:
Departs Truk with RO-63 and RO-68 to reconnoiter Rabaul, New Britain. Patrols S of Cape St. George.

29 January 1942:
Returns to Truk.

10 February 1942:
Lt (later Cdr, posthumously) Tabata Naoshi (58) is posted CO. LtCdr Uno is later posted CO of I-75 and later perishes in I-52.

18 February 1942:
Departs Truk for the Marshalls area in company of RO-63 and RO-68.

23 February 1942:
Arrives at Ponape.

24 February 1942:
Departs Ponape with RO-63 and RO-68 for the Marshalls area.

27 February 1942:
Following an accident with RO-63, heads for Bikini.

28 February 1942:
Arrives at Bikini; departs the next day.

12 March 1942:
Arrives at Kwajalein.

16 March 1942:
Departs Kwajalein for Ponape.

19 March 1942:
Arrives at Ponape.

20 March 1942:
Departs Ponape for Truk.

21 March 1942:
Arrives at Truk.

27 March 1942:
Departs Truk for Saipan.

29 March 1942:
Arrives at Saipan.

30 March 1942:
Departs Saipan for Maizuru.

7 April 1942:
Arrives at Maizuru, later transferred to Yokosuka.

14 July 1942:
Cdr (Rear Admiral, posthumously) Kato Ryonosuke’s (48) SubDiv 33 is transferred to the Fifth Fleet.

24 July 1942:
Departs Yokosuka for Paramushiro with RO-63 and RO-68, but has to abort her sortie because of an outbreak of food poisoning.

26 July 1942:
Returns to Yokosuka; departs the next day for Paramushiro.

1 August 1942:
Arrives at Paramushiro.

2 August 1942:
Departs Paramushiro for Kiska.

6 August 1942:
Arrives at Kiska.

7 August 1942:
Rear Admiral (later Vice Admiral) William W. Smith's (USNA ’09)(former Chief of Staff to Admiral Husband E. Kimmel's (USNA ’04), TG 8.6 shells Kiska. RO-61, RO-64, RO-68 and I-6 anchored in the harbor crash-dive to escape damage.

8 to 10 August 1942:
RO-64, RO-61, RO-63 and RO-68 sortie to intercept TG 8.6, but fail to make contact.

11 to 13 August 1942:
Conducts a search for the crew of a ditched reconnaissance plane.

17 to 26 August 1942:
Patrols off Aleutians, then returns to Kiska.

29 August 1942:
A Kiska-based E13A1 "Jake" reconnaissance plane reports a "heavy cruiser" at anchor in Nazan Bay at Atka Island, Aleutians. The RO-64 departs Kiska for Nazan Bay with RO-61.

4 September 1942:
Returns to Kiska.

5 to 17 September 1942:
Patrols off Aleutians.

15 September 1942:
SubDiv 22 and SubDiv 33 are temporarily attached to Rear Admiral Akiyama Katsuzo’s (40) 51st Base Unit (HQ Kiska).

25 September 1942:
SubDiv 33 is reassigned to the Kure SubRon.

26 September 1942:
Departs Kiska for Maizuru with RO-63 and RO-68.

5 October 1942:
Arrives at Maizuru; departs the next day for Kure.

14 October 1942:
Lt (later Cdr, posthumously) Wada Mutsuo (61) is posted CO. Lt Tabata is later promoted LtCdr and posted CO of I-7.

8 November 1942:
Arrives at Kure. Used as training ship thereafter.

25 March 1943:
Captain (later Rear Admiral, posthumously) Kato Ryonosuke (48) (current ComSubDiv 33) is posted CO as an additional duty. Lt Wada is later promoted LtCdr and posted CO of I-153.

1 September 1943:
Captain (later Rear Admiral, posthumously) Narahara Shogo (48) (former ComSubDiv 26) is posted CO as an additional duty. Captain Kato is posted ComSubDiv 51.

1 January 1944:
Kure Naval District. RO-64 is in SubDiv 33 with RO-62, RO-63, RO-67 and RO-68. Training duties.

20 January 1944:
Lt (later Cdr, posthumously) Okayama Noboru (64) is posted CO.

30 April 1944:
Lt (j.g.) (later Cdr, posthumously) Ono Yasuji (65) is posted CO. Lt Okayama is posted Chief Equipping Officer of I-361.

1 May 1944:
Lt (j.g.) Ono is promoted Lt.

31 August 1944:
Lt Sato Kiyoteru (66) is posted CO. Lt Ono is later posted CO of I-165.

14 October 1944:
Lt (j.g.) Kiuchi Tetsuro (69) is posted CO. Lt Sato is later posted CO of RO-62.

6 November 1944:
Lt. (j.g.) (later Lt) Yoshizawa Chiaki (69) is posted CO. Lt Tokunaga is posted CO of RO-46.

11 December 1944:
Lt. (j.g.) (later Lt) Yoshizawa Chiaki (69) is posted CO. Lt Tokunaga is posted CO of RO-46.

1 January 1945:
Kure Naval District. RO-64 is in SubDiv 33 with RO-63 and RO-67. Training duties. LtCdr Muto Keigo is posted CO.

15 February 1945:
ComSubDiv 33 Captain Otani Kiyonori (former CO of I-18 and others) assumes joint command of RO-64.

15 March 1945:
ComSubDiv 33 Cdr (Rear Admiral, posthumously) Ankyu Eitaro’s (40)(former CO of I-1 and I-38) assumes joint command of RO-64.

12 April 1945:
Hiroshima Bay. RO-64 is proceeding underwater on a training mission. At 1428, she hits a mine laid by an American aircraft and sinks quickly with her crew of 50 plus ComSubDiv 33's Cdr Ankyu and 30 students. Cdr Ankyu is promoted posthumously two ranks to Rear Admiral. LtCdr Muto is promoted Cdr, posthumously.

10 August 1945:
Removed from the Navy List.


Authors' Notes:
[1] Mt. Niitaka, located in Formosa (now Taiwan), was then the highest point in the Japanese Empire.

Thanks go to Dr. Higuchi Tatsuhiro of Japan and to Matthew Jones for additional CO info.

– Bob Hackett and Sander Kingsepp.


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