
© 2001 Bob Hackett & Sander Kingsepp
Revision 2
15 December 1938:
The I-8 is completed by Kawasaki's Kobe shipyard,
commissioned in the IJN and based in the Yokosuka Naval District.
15 November 1940:
The I-8 is assigned to SubRon 3, Sixth Fleet.
31 October 1941:
Cdr (Rear Admiral posthumously) Emi Tetsushiro is
assigned as the Commanding Officer.
10 November 1941: Operation "Z":
The I-8 is in Vice Admiral Shimizu
Mitsumi's (former CO of ISE) Advance Expeditionary Force (Sixth Fleet). She is
the flagship of Rear Admiral (later Vice Admiral) Miwa Shigeyoshi's SubRon 3:
I-68, -69, -70, -71, -72, -73, -74 and the I-175.
Admiral Shimizu convenes a meeting aboard his flagship, the light cruiser
KATORI. Cdr Emi and the other submarine commanders are briefed on the planned
attack on Pearl Harbor.
11 November 1941:
The I-8, fitted with extensive communications
equipment, departs Saeki for her first war patrol with ComSubRon 3 Rear Admiral
Miwa aboard. She carries an E14Y1 "Glen" floatplane.
24 November 1941:
Departs Kwajalein for Hawaii.
2 December 1941:
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). Mt. Niitaka, located in
Formosa (now Taiwan), is then the highest point in the Japanese Empire.
7 December 1941: The Attack on Pearl Harbor:
The I-8 is stationed
south of Kauai.
8 December 1941:
The I-8 receives a report from the I-70 about the
USS ENTERPRISE (CV-6) returning to Pearl Harbor and relays it to the other
submarines.
24 December 1941:
Returns to Kwajalein.
12 January 1942:
The I-8 departs Kawajalein on second war patrol.
20 January-20 February 1942:
The I-8 reconnoiters the American west
coast from San Francisco to Seattle. She sees no targets; thereafter, she
returns to Kwajalein to reprovision and refuel.
2 March 1942:
Arrives at Kure for repairs and overhaul.
16 March 1942:
Vice Admiral, the Marquis, Komatsu Teruhisa (former CO
of CA NACHI) assumes command of the Sixth Fleet (Submarines).
15 April 1942:
SubRon 3 departs Yokosuka for Kwajalein with Rear
Admiral Miwa embarked on the I-8.
18 April 1942: The First Bombing of Japan:
SubRon 3 is ordered to be
on the lookout for an American Task Force sighted 700 miles E of Tokyo, but
makes no contact.
Vice-Admiral (later Fleet Admiral) William F. ("Bull") Halsey's Task
Force 16's USS HORNET (CV-8), cruisers, destroyers and an oiler accompanied by
the USS ENTERPRISE (CV-6), cruisers, destroyers and another oiler approach to
within 668 nautical miles of Japan. Led by Lt Col (later Gen/Medal of Honor)
James H. Doolittle, 16 Army North American B-25 "Mitchell" twin-engine bombers
of the 17th Bomb Group takeoff from Captain (later Admiral) Marc A. Mitscher's
HORNET and strike targets in Tokyo, Yokohama, Osaka, Nagoya and Kobe.
April 1942:
Enroute to Kwajalein, Rear Admiral Miwa becomes seriously
ill. The I-8 returns to Yokosuka. The remainder of SubRon 3 continues on to
Kwajalein.
26 April 1942:
Departs Yokosuka on her third patrol with the
newly-appointed ComSubRon 3 Rear Admiral Kono Chimaki aboard.
6 May 1942:
Off Kwajalein. The I-8 is mistakenly bombed by Mitsubishi
GM4 "Bettys" of the Chitose NAG. As a result of the damage sustained, the I-8
cannot submerge. (After this incident, double white bands on the afterdeck of
IJN submarines are introduced as a standard recognition aide.*)
7 May 1942:
The I-8 arrives at Kwajalein for temporary repairs.
ComSubRon 3 leaves the submarine, which proceeds to Kure thereafter.
16 May 1942:
Arrives at Kure for an overhaul. The I-8 is transferred
to SubRon 5.
14 July 1942:
SubRon 5 is disbanded. The I-8 is reassigned to the
Southwest Area Fleet with SubDiv 30's I-162, -165 and the I-166.
25 July 1942:
Cdr (later Captain) Uchino Shinji (former CO of RO-27)
assumes command from Cdr Emi.**
7 August 1942: American Operation "Watchtower" - The Invasion of
Guadalcanal, British Solomon Islands:
Rear Admiral (later Admiral) Richmond
K. Turner's Amphibious Task Force 62, covered by Vice Admiral (later Admiral)
Frank J. Fletcher's Task Force 61 and Rear Admiral (later Admiral) John S.
McCain's Task Force 63's land-based aircraft, lands Maj Gen (later
Gen/Commandant) Alexander A. Vandegrift's 1st Marine Division on Guadalcanal
opening a seven-month campaign to take the island.
15 September 1942:
Departs Saeki to operate S of Guadalcanal area.
The I-8 shells enemy positions and participates in reconnaissance missions.
2 November 1942:
The I-8 launches her seaplane to reconnoiter Efate
Island in the New Hebrides.
4 December 1942:
The I-8 departs Shortland with ComSubRon 1, Rear
Admiral Mito Hisashi (former CO of I-51) aboard. She carries 21-tons of cargo.
6 December 1942:
The I-8 arrives at Kamimbo Bay, Guadalcanal. A
Daihatsu barge makes two trips to transfer her cargo, but an American PT boat is
sighted. The I-8 departs with less than one ton cargo still aboard.
14 January 1943:
The I-8 departs Truk to shell Canton Island. The
I-8's mission with the heavy cruiser TONE and Kawanishi H8K "Emily" flying boats
of the 802nd NAG is to create a diversion for the impending evacuation of
Japanese troops from Guadalcanal.
23 January 1943: Operation "KE" - The Evacuation of Guadalcanal.
At
2330 (JST), the I-8 surfaces and fires 41 shells at the airfield and PBY base at
Canton.
31 January 1943:
The I-8 carries out periscopic observation of the
island, sighting a "seaplane tender".
1 February 1943:
At 0040 (JST), the I-8 surfaces and fires 45 shells
at the island targets. A single-engined aircraft appears shortly thereafter and
the submarine dives. On her way back to Truk, Cdr Uchino reconnoiters Fiji and
Samoa islands.
10 March 1943:
The I-8 arrives at Truk.
21 March 1943:
Arrives at Kure for an overhaul. Her 13.2-mm twin
machine guns are replaced with a 25-mm twin AA gun and a single 13.2-mm machine
gun. An E27/Type 3 radar detector is fitted.
31 March 1943:
Berlin, Germany. The Japanese Ambassador to Germany,
Lt General Oshima Hiroshi, reports to Tokyo that Field Marshal Erich von
Manstein suggested that since so many surface blockade-runners are being sunk
that large, older U-boats be converted to carry "Yanagi" (Willow)*** war
materials between Europe and the Far East. Oshima recommends that the Japanese
adopt the German suggestion as soon as possible. Oshima's message is sent in the
Japanese diplomatic code, but is intercepted and decoded by the Allies.
1 June 1943:
The I-8 departs Kure in the company of the I-10 and the
tender HIE MARU. The I-8 is bound for Lorient, France on a Yanagi mission. She
is the second IJN submarine (after I-30) to be given such a mission. Her cargo
includes two Type 95 torpedoes, drawings of an automatic trim system, Type 95
submarine torpedo tubes and a new naval reconnaissance plane.
Cdr Uchino also carries LtCdr Norita Sadatoshi (former CO of I-122) and a
spare 48-man crew. Norita will later assume command of the German U-1224 "Marco
Polo II" (redesignated the RO-501) a type IXC/40 U-boat that is later
transferred to the IJN. Other passengers include four translators and code
clerks, a LtCdr medical officer and a Technical Cdr expert on torpedo boat
engines.
With about 160 men and cargo aboard the cramped I-8, the spare crew is
accommodated mainly in the torpedo room. Only the six torpedoes in the tubes
(including the two Type 95 torpedoes) are carried.
10 June 1943:
Arrives at Singapore.
11 June 1943:
The I-8 arrives at Penang and takes aboard an
additional cargo of quinine, tin and raw rubber. Her E14Y1 floatplane, two
pilots and maintenance crew of four are disembarked.
Cdr Uchino's I-8 joins Rear Admiral Ishizaki Noboru's (former CO of
HYUGA) SubRon 8 with the I-10, -27, -29 and the I-37.
21 June 1943:
Vice Admiral Takagi Takeo (former CO of MUTSU) assumes
command of the Sixth Fleet (Submarines). Vice Admiral Komatsu is later appointed
President of the Etajima Naval Academy.
27 June 1943:
The I-8 departs Penang.
8 July 1943:
The I-8 refuels and replenishes from Cdr Tonozuka Kinzo's
I-10 at sea that has ComSubRon 8's Rear Admiral Ishizaki embarked. Then the I-8
detaches for Lorient, France.
21 July 1943:
The I-8 enters the Atlantic via the Cape of Good Hope,
300 miles S of Africa. She is battered by fierce storms for 10 days and can make
no better than 5 knots. The storms damage her aircraft hangar and upper deck.
24 July 1943:
The I-8 receives its first radio signal from the
Kriegsmarine. The Germans warn the Japanese about Allied air patrols and radar.
July 1943:
South Atlantic. The I-8, running surfaced, encounters
Kapitänleutnant Peter-Erich Cremer's Type VIIC U-333 bound for La Rochelle,
France. Cremer thinks that the huge Japanese submarine looks "strange".
29 July 1943:
The I-8 receives another radio signal from the
Kriegsmarine. She is redirected to Brest instead of Lorient.
2 August 1943:
The I-8 crosses the Equator.
20 August 1943:
Atlantic Ocean, S of the Azores. The I-8 makes a
rendezvous with Kapitänleutnant Albrecht Achilles' Type IXC U-161 in heavy seas.
The next day, she takes aboard Oberleutnant zur See Jahn and two petty officer
radiomen to assist in bringing the I-8 safely into the U-Boat base at Brest. The
I-8 is code-named "U-Flieder" (Lilac) by the Germans.
The Germans install a Metox 600A (FuMB 1) ("Biscay Cross") radar detector
on the I-8's bridge. On completion of this task, the Japanese present the German
crew with a 4-gallon tank of coffee. The U-161 detaches for Brazil but is lost
the next month SW of the Azores. Jahn and the two petty officers are the only
U-161 crewmen to survive her last patrol.
29-31 August 1943:
Bay of Biscay. The Luftwaffe provides air cover for
the I-8. Near Brest, they provide additional Ju-88 attack bombers and the
Kriegsmarine dispatches torpedo boats T-22, T-24 and T-25 that sweep a passage
through their magnetic influence mines into the harbor.
31 August 1943:
The I-8 arrives at Brest. Cdr Uchino and his crew turn
out on deck in their dress blues. They are greeted by Admiral Theodor Krancke
(former CO of Panzerschiff ADMIRAL SCHEER), CINC of the Kriegsmarine's
Marineoberkommando West (Group West) and receive German war decorations. The
German station band plays welcoming martial music. The event is filmed for
propaganda purposes. A French tug assists the I-8 in berthing in Pen "A" of
Brest's huge U-boat bunker.
Brest is the home of the 1st U-Flotille "Weddigen" commanded by Knight's
Cross winner Korvettenkapitän (later Kapitän zur See, Bundesmarine) Werner
Winter (former CO of U-103) with its headquarters at the former French Naval
Academy (L'Ecole Navale), a sprawling granite complex overlooking the bay.
Later, the Germans host their Japanese counterparts in their luxurious leisure
facility at Chateau de Trévarez overlooking the small town of Chateauneuf de
Faou.
During the I-8's stay in France, Cdr Uchino meets Grossadmiral Karl
Dönitz, CINC of the Kriegsmarine, and her crew visits Paris. A German news
agency announces that "now even Japanese submarines are operating in the
Atlantic".
5 October 1943:
The I-8 departs Brest escorted by two M-class
minesweepers. Her cargo includes six 13-mm Rheinmetall-Borsig MG 131 machine
guns with full ammunition, bombsights, one Daimler-Benz torpedo boat engine,
naval chronometers, radars including the "Rotterdam Gerät" and sonar equipment,
quad 20-mm "Flakvierling" AA guns, dive-bomber and horizontal-bomber bombsights,
electric torpedoes and naval chronometers and penicillin.
The I-8's passengers include Rear Admiral Yokoi Tadao, the former Naval
Attaché to Germany (Sep 40-Sep 43) and Captain Hosoya Sukeyoshi, the former
Naval Attaché to France (Dec 39-Mar 43). The I-8 also carries three German naval
officers including Japanese-speaking Lt Koch, one German Army major and four
radar and hydrophone technicians including a Dr. Jakob and a Dr. Müller.
6 October 1943:
Escorted by eight aircraft, probably Junkers Ju-88s,
the I-8 proceeds on one shaft at a maximum speed of 11 knots to conserve fuel.
After crossing the equator, the I-8 sends her second position report to the
Kriegsmarine, but the signal is intercepted and her position plotted by Allied
high frequency direction finding ("huff duff"). The next day she is attacked by
an ASW aircraft, but manages to crash-dive. While traversing the "roaring
forties" another storm damages her bridge.
13 November 1943:
The I-8 passes Capetown. On that day, the I-34 (the
next submarine en route to Europe) is torpedoed and sunk 30 miles S of Penang.
ComSubRon 8, Rear Admiral Ishizaki orders Uchino to head for Singapore instead
of Penang. (The I-8's ETA at Penang was 2 Dec 43.)

