1500: Captain Aruga informs
his assembled crew about the sortie.
1730: Sixty-seven naval cadets of Etajima class No. 74, who arrived three days before, are
sent ashore. Then a farewell party is held aboard the YAMATO. 6 April 1945: Operation
Ten-I-Go ("Heaven Number One") The Attack on the U.S. Invasion
Forces at Okinawa:
At the Mitajiri anchorage. In the early morning, Vice Admiral Kusaka
Ryunosuke (former CO of CV AKAGI), Chief of Staff of the Combined
Fleet, accompanied by Cdr Mikami Sakuo of the Combined Fleet Staff
arrive by a float biplane from Kanoya to confer about the mission
with Vice Admiral Ito, Commander, Second Fleet and staff.
1520: Departs Tokuyama
escorted by DesDiv 43: HANAZUKI, KAYA, MAKI as far as the Bungo
Suido where the destroyers detach for port. Vice Admiral Ito, leads
the Surface Special Attack Force: YAMATO, DesRon 2's light cruiser
YAHAGI, DesDiv 17: ISOKAZE, HAMAKAZE, YUKIKAZE, DesDiv 21: KASUMI,
HATSUSHIMO, ASASHIMO, DesDiv 41: FUYUZUKI and SUZUTSUKI. Earlier,
two Nakajima A6M2-N "Rufe" float planes and six submarine chasers
are dispatched to search the area.
1830: The Attack Force negotiaties the western channel of Bungo Suido at 22 knots when a
patrol plane radios the YAMATO that it has sighted an enemy
submarine ten miles from Tsukudajima. The Attack Force changes
course to 140 degrees and assumes an anti-submarine formation. To
avoid a submarine in the Hyuga-nada, the force changes to a westerly
course. The escorting destroyers move ahead and the whole group
begins zigzagging. A lookout on the ISOKAZE spots the submarine USS
THREADFIN (SS-410) on the surface.
2100: The Attack Force
swings to the south to avoid a possible torpedo attack.
2144: The THREADFIN radios
a detailed sighting report of the Attack Force's presence in the Bungo Suido to COMSUBPAC at Guam. The report is intercepted by the
YAMATO. Later, the USS HACKLEBACK (SS-295) also sights the Attack
Force and reports, but neither submarine is able to close the range
for an attack.
7 April 1945:
0200: The Attack Force, zigzagging at 22 knots on a southerly
course, passes the Miyazaki coast and reaches the entrance to Osumi
Kaikyo Channel. Speed is slowed to 16 knots.
0600: The YAMATO launches
her Aichi E13A1 Type 0 "Jake" reconnaissance floatplane.
0630: Six Mitsubishi A6M
"Zeke" fighters of Vice Admiral Ugaki's 5th Air Fleet's 203rd Naval
Air Group arrive to provide air cover. For the next three and
one-half hours, a total of 14 "Zekes" from the Kasanbara air base on
Kyushu, provide cover in small groups. The YAMATO's "Jake" returns
to Kyushu.
0657: The ASASHIMO begins
lagging behind the force with engine trouble.
0832: The Attack Force is
sighted by a searching Grumman F6F "Hellcat" from the USS ESSEX
(CV-9).
0840: The Attack Force
briefly sights seven "Hellcat" fighters, but they are not seen by
the escorting "Zekes".
1014: The Attack Force
sights two large Martin "Mariner" PBM flying boats. The Japanese
also spot the HACKLEBACK trailing the Attack Force.
1017: The YAMATO turns
towards the planes and opens fire unsuccessfully as does the cruiser
YAHAGI. While the YAHAGI jams their sighting messages, the YAMATO
receives a report from a Japanese scout plane that Task Force 58 has
been located east of Okinawa, 250 nautical miles from the Attack
Force.
1018: The aircraft are lost
behind the clouds. Both ships cease firing.
1022: The Attack Force
turns towards Sasebo.
1107: The YAMATO's Type 13
air search radar operator reports contact with a large aircraft
formation at his set's maximum range of 63 miles. He reports the
formation at bearing 180, heading north, and splitting into two
groups. All ships increase speed to 25 knots and commence a
simultaneous turn.
1115: A report that had
been delayed for 25 minutes by transmission and decoding, is
received finally. It says that the Kikaigashima Island lookout
station saw 150 carrier planes heading northwest. Just then, eight
F6F "Hellcats" appear and begin circling over the force to maintain
contact until the main formation arrives. The YAMATO and the YAHAGI
open fire, increase speed to 24 knots and commence a series of sharp
evasive maneuvers.
Air search reports two
groups of aircraft, range 44 miles, closing at high speed. The sky
is still overcast and visibility is poor. Then radar reports the
closing aircraft have turned towards the force. The Attack Force
resumes zigzagging.
1129: The Attack Force
turns to course 205, towards Okinawa.
1222: A lookout spots three
Japanese troopships on bearing 0250 heading for Amami-Oshima.
1232: A lookout spots
American planes 25 degrees to port, elevation 8, range 4,375 yards,
moving to port. This is the first wave of 280 aircraft (132
fighters, 50 bombers, 98 torpedo planes) from Task Group 58. 1: USS
HORNET (CV-12), HANCOCK (CV-19), BENNINGTON (CV-20), BELLEAU WOOD
(CVL-24) and the SAN JACINTO (CVL-30) and from Task Group 58. 3: USS
ESSEX (CV-9), BUNKER HILL (CV-17), BATAAN (CVL-24) and the CABOT
(CVL-28).
Lagging behind the main
force, the destroyer ASASHIMO is attacked and sunk by aircraft from
the SAN JACINTO.
1234: The YAMATO opens fire
with her two forward main turrets and AA guns.
1235: The YAMATO stops
zigzagging and increases speed to 24 knots. Her nine 18.1-inch guns
firing "Sanshikidan" beehive shells, twenty-four 127-mm. AA guns and
one hundred fifty-two 25-mm AA guns all open fire. The American
planes release their bombs and torpedoes and strafe the bridge with
machine-gun fire.
1240: The YAMATO is hit by
two AP bombs. Smoke rises from the vicinity of the mainmast and a
bomb explodes in the same area. The aft secondary battery fire
control, secondary gun turret and the air search radar are knocked
out.
The Attack Force changes
course to 100 degrees. "Helldivers" from the BENNINGTON and the
HORNET attack from port. At flank speed, the YAMATO commences a
right turn but two 1000-lb AP bombs hit her. The first explodes in
the crew's quarters abaft the Type 13 radar shack. The second
penetrates the port side of the aft Command station and explodes
between the 155-mm gun magazine and main gun turret No. 3's upper
powder magazine. It starts a fire that cannot be extinguished and
rips a 60-foot hole in the weather deck. One "Helldiver" is shot
down, another is damaged badly.
1243: A section of five low
flying "Avengers" from the HORNET start a torpedo run from the port,
bearing 70 degrees. The YAMATO, at 27 knots flank speed, heels to
starboard in evasive action. The "Avengers" drop three torpedoes.
One strikes her port side near the forward windlass room. One
"Avenger" is shot down.
The YAMATO ships 2,350-tons
of water. Damage Control counterfloods with 604-tons of water.
Fourteen F4U Chance-Vought "Corsairs" from the BUNKER HILL strafe
and rocket the YAMATO but cause only minor damage. Hundreds of men
are trapped inside when the water-tight compartments are sealed to
prevent further flooding.
1245: Thirty-four
"Hellcats", 22 "Helldivers" and one "Corsair" attack the YAMATO's
escorts. DesDiv 17's HAMAKAZE takes a near miss on her starboard
quarter that disables her starboard shaft.
1247: A torpedo strikes the HAMAKAZE starboard, aft of amidships and she jackknifes. The
SUZUTSUKI takes a 500-lb GP bomb hit to starboard, abreast her No. 2
gun mount. Two dud rockets hit the FUYUTSUKI.
1250: The first attack wave
retires. The destroyer SUZUTSUKI wreathed in black smoke, burns
furiously. The light cruiser YAHAGI, without headway, drifts
helplessly behind the main force. The YAMATO, despite hits by two
bombs and one torpedo, maintains flank speed.
1300: The YAMATO changes
course to 180 degrees, due South.
1302: Her remaining air
search radar reports the approach of a second attack wave. The
Attack Force changes course due south to 180 degrees.
1302: Fifty aircraft from
the ESSEX and the BATAAN are sighted approaching from the SSW, range
18.5 miles.
1322: The YAMATO increases
speed to 22 knots. A "Corsair" from the ESSEX drops a 1000-lb GP
bomb that hits the superstructure in the port bow area. Twelve
"Helldivers" claim several hits near the bridge and main gun turret
No. 3. Five "Helldivers" are damaged by AA fire.
1333: Another 110 aircraft
from Task Group 58. 4: USS YORKTOWN (CV-10, INTREPID (CV-11),
LANGLEY (CVL-27) engage the Attack Force. This time all the attacks
are concentrated against the battleship. Twenty "Avengers" make a
new torpedo run from 60 degrees to port. The YAMATO starts a sharp
turn to port but three torpedoes rip into her port side amidships.
Her auxiliary rudder is jammed in position hard port.
The YAMATO has taken a
total of four torpedo hits. She ships about 3,000-tons of seawater.
She lists about seven degrees to port. Damage Control counter-floods
both starboard engine and boiler rooms and almost entirely corrects
the list.
The YAMATO starts a turn
starboard to course 230 degrees. One of her lookouts spots the
tracks of four torpedoes approaching. The first torpedoes pass by
harmlessly, but the remaining two strike her port amidships. She
takes on a heavy list to port and her speed drops to 18 knots.
Armor-piercing and other bombs make a shambles of her upper works.
1342: The YAMATO turns hard
to port. She continues to throw up a screen of desperate flak fire.
One "Avenger" is shot down but her barrage is largely ineffective
because each AA battery fires independently without coordination.
The escorts cannot defend the flagship either.
1402: Three bombs explode
port amidships, five minutes later a torpedo hits her starboard side
amidships. Ten minutes later, two more torpedoes strike her port
side. The YAMATO's list increases to about 15 degrees and her speed
slows to 12 knots.
Executive Officer Nomura
Jiro reports to Captain Aruga that his damage control officers are
all dead and that the counter-flooding system can no longer correct
the list. He suggests that the order to abandon ship be given. The
Fleet Commander, Vice Admiral Ito, orders the mission cancelled and
directs the remaining ships to pick up as many survivors as
possible. The Emperor's portrait is removed.
1405: The light cruiser
YAHAGI, hit by 12 bombs and seven torpedoes sinks exactly one minute
after the last bomb hits. LtCdr (later Captain) Herbert Houck, the
leader of 43 TBM Avengers of VT-9 from the YORKTOWN, detaches Lt
Thomas Stetson's six Avengers in a final torpedo attack from the
ship's starboard side. Stetson's crewmen reset their Mark 13
torpedoes' running depth to 20 feet. Listing heavily to port, the
YAMATO's exposed hull is hit by several more torpedoes. She rolls
slowly over her port side on her beam ends.
1423: Sunk: The YAMATO's
No. 1 magazine explodes and sends up a cloud of smoke seen 100 miles
away. She slips under followed by an underwater explosion. The
YAMATO sinks at 30-22 N, 128-04 E.
Survivors
269 survivors are rescued
including Rear Admiral Morishita Nobuei, Chief of Staff, Second
Fleet (and former YAMATO skipper).
Vice Admiral Ito and the
YAMATO's skipper Captain Aruga and 3,063 men are lost. Aruga
receives a rare double promotion posthumously to Vice Admiral on the
request of Admiral Toyoda. Later that day, the battered destroyers
ISOKAZE and the KASUMI are scuttled and sink. 1,187 crewmen of
DesRon 2's light cruiser the YAHAGI and the four destroyers are also
lost.
The Imperial Japanese Navy
ceases to exist as a fighting force. The Americans lose 10 aircraft
and 12 crewmen.
269
crewmembers survived out of almost 3000. Yamato survivor Kazuhiro
Fukumoto describes how after the ship was down, he was drawn into
the whirlpool from the propeller and struggling powerless. "One
propeller blade was five meters long, so just one turn created a
huge whirlpool. I started getting short of breath. I couldn't take
it anymore, and I swallowed a mouthful of water." He says. "I
started to get short of breath and then I began to lose
consciousness." He wasn't thinking about getting rescued or what I
was supposed to be doing - he was just a step away from death.
Nearby destroyer Yukikaze picked almost three hundred
horrified, exhausted and oily Yamato survivors from the sea. " We
got orders to return to Kure, and I was put on a train. We were held
in Kure for a month. So parents who knew about the Yamato
sinking didn't see their sons for a month and a half. They gave up,
thinking that their sons had died. " says Fukumoto. "But after I was
rescued I gained real desire for life. I wanted more than ever to
survive. It was the first time I was afraid of war."
Read full interview.
Why did Yamato sink?
The world's biggest and strongest
battleship ever. Why did it sink? How come such a great structure
with the biggest armor, guns, and crew ever, could end up with a
defeat in less than two hours? What caused the huge explosions - far
more powerful than the blasts of torpedoes - pictured during her
last moments?
Yamato gets hit by several torpedoes and starts to list heavily to
port, becomes unstable and capsizes. Three 3000-ton gun turrets are
ripped from their mountings by their own weight. In the powder
magazines, tons of ammunition slam together causing at least three
powerful blasts - perhaps the largest explosions ever to occur on
sea - and rip the ship in two halves. For the Japanese this was the
end of the imperial navy.
In Pearl Harbor, a week before Yamato was commissioned, Japanese
themselves demonstrated to the world's navies how a skillful use of
aircrafts can overpower even large fleet of battleships. They had
destroyed or damaged every American battleship on the Pacific. And
yet, they put their fate on building bigger and better battleships
than everyone else, believing that being the way to obtain the
authority on the seas.
Asking why Yamato sank is like asking why Japan lost the war. Yamato
sank because Japan was out-produced by superior resources. For each
airplane the Japanese built, the Allied built two. For each ship the
Japanese sank, Allied built two more. Allied natural resources and
technology to benefit from it outclassed the Japanese, the more and
more so towards the end of the war. Yamato sank because Japan had
already lost, but the never-give-up mentality didn't let them
surrender before the dropping of the atomic bombs. The essential
aircrafts were lost in the Battle of the Philippine Sea, and Yamato
was not a match against nearly four hundred attack planes all alone
without any air support. Air dropped torpedoes and bombs eventually
sank the greatest ship ever built and put an end of an era of the
battleships. After the war, almost all battleships were scrapped
since they were now outclassed by carriers.