(Kaichu type submarine scanned from "Submarines of the
Imperial Japanese Navy" by Polmar and Carpenter)
IJN Submarine RO-47:
Tabular Record of
© 2001-2016 Bob Hackett & Sander Kingsepp
28 December 1942:
Tamano. Laid down at Mitsui Zosensho as
a 960-ton type K6
30 August 1943:
Launched and designated RO-47.
5 November 1943:
LtCdr (Cdr, posthumously) Hamazumi Yoshihisa (61)
(former CO of RO-104) is appointed Chief Equipping Officer of RO-45 and RO-47
as an additional duty.
20 December 1943:
LtCdr (Cdr, posthumously) Nishiuchi Shoichi
(60)(former CO of RO-63) is appointed Chief Equipping Officer.
31 January 1944:
Completed and attached to Maizuru Naval District.
LtCdr Nishiuchi is the Commanding Officer.
27 March 1944:
Following an air strike on Palau, RO-47, I-44, I-183,
RO-116 and RO-117 are ordered to proceed to an area E of Palau. Departs Kure.
28 March 1944:
Arrives at Tokuyama Fuel Depot. Refuels.
29 March 1944:
5 April 1944:
Ordered to return to Kure.
13 April 1944:
Arrives at Kure.
14 May 1944:
Reassigned to SubDiv 34, Sixth Fleet.
13 June 1944: Operation "A-GO" - The Defense of the Marianas:
Toyoda Soemu, (33)(former CO of HYUGA), CINC, Combined Fleet, activates A-Go and
orders Vice Admiral Takagi Takeo (39)(former CO of MUTSU), CINC, Sixth Fleet
(Submarines) to redeploy his boats to the Marianas.
14 June 1944:
Departs Yokosuka to patrol off Saipan.
15 June 1944: American Operation "FORAGER" - The Invasion of Saipan,
Vice Admiral (later Admiral) Richmond K. Turner's (USNA ’08) Task
Force 52 lands Marine LtGen Holland M. Smith's V Amphibious Corps and the
invasion of Saipan begins.
Communications between Takagi's Sixth Fleet on Saipan are
disrupted by the invasion. Command of the Sixth Fleet's submarines passes to
Rear Admiral Owada Noboru (44)(former CO of YAMASHIRO), ComSubRon 7 at Truk. He
orders most of the Sixth Fleet's submarines to withdraw from the Marianas.
10 July 1944:
Vice Admiral Miwa Shigeyoshi (39)(former CO of KINU) at
Kure assumes command of the Sixth Fleet from Rear Admiral Owada at Truk.
RO-47 departs her patrol area.
16 July 1944:
Arrives at Maizuru for repairs and overhaul. Later
transferred to Kure.
1 August 1944:
Lt (LtCdr, posthumously) Ishikawa Nagao (65)(former
torpedo officer of I-41) is appointed CO.
15 September 1944: American Operation "STALEMATE II" - The Invasion of
Admiral (later Fleet Admiral) William F. Halsey's (USNA ’04)
Third Fleet lands the First Marine Division on Peleliu and the Army's 81st
Division on Angaur Island.
17 September 1944:
Departs Kure to attack American amphibious forces
invading Peleliu, Palau. RO-47 is sent to an area S of Palau.
24 September 1944:
Lt Ishikawa is ordered to proceed at full speed to
the E of Palau. RO-47 is not heard from thereafter.
26 September 1944:
NE of Palau. LtCdr Edwin K. Winn's McCOY REYNOLDS
(DE-440) is making a solitary run from Peleliu to Guam to join Task Force 57.
At 0103, McCOY REYNOLDS' SL radar detects a target on the surface at 9,200 yds.
When LtCdr Winn challenges, the contact disappears from his radar.
Sonar reports an underwater contact at 2,500 yds. At 0218, McCOY
REYNOLDS fires a barrage of twenty-four Mark 10 ahead-thrown "Hedgehog"
projector charges. The first salvo misses. LtCdr Winn makes six more attacks
with "Hedgehog" and depth charges until 0615 when a heavy underwater explosion
is felt. Soon, diesel oil and splintered wood planking spread across the
surface at 09-19N, 136-44E. They signal the end of the submarine - probably
2 November 1944:
Presumed lost with all 76 hands off the Palaus.
10 March 1944:
Removed from the Navy List.
Thanks go to Dr. Higuchi Tatsuhiro of Japan.
– Bob Hackett and Sander Kingsepp.
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