Trials and initial operations (fourth from left) and his staff posing with the ''Yamato's'' 46 cm (18.1 in) gun turret 3 on 20 December 1941. During October or November 1941
Yamato underwent
sea trials, reaching her maximum possible speed of . On 12 February 1942,
Yamato became the
flagship of Admiral
Isoroku Yamamoto's
Combined Fleet. US codebreakers were aware of Yamamoto's intentions, and the
Battle of Midway proved disastrous for Japan's carrier force, with four fleet carriers and 332 aircraft lost. After 11 days at sea, she was sighted by the American submarine , which fired four torpedoes, all of which missed;
Yamato arrived safely at Truk later that day. On that day, she set sail for
Yokosuka and from there for Kure, arriving on 14 May.
Skate fired a spread of four torpedoes at
Yamato; one struck the battleship's starboard side toward the stern. The mission was cancelled when word reached Ozawa's headquarters of American carrier attacks on the
Mariana Islands. The Japanese lost three aircraft carriers and 426 aircraft; In response to the American invasion of the Philippines, Operation Shō-Gō called for a number of Japanese groups to converge on the island of Leyte, where
American troops were landing. On 18 October,
Yamato was given a coating of black camouflage in preparation for her nighttime transit of the
San Bernardino Strait; the main ingredient was
soot taken from her smokestack. Kurita survived the loss of
Atago and transferred his flag to
Yamato. However, her sister ship
Musashi became the focus of the American attacks and eventually sank after being hit with 17 bombs and 19 torpedoes.
Battle off Samar '' entering the
battle off Samar Unknown to Kurita, the main American battle group under the command of Admiral
William Halsey Jr., departed the Leyte Gulf area on the evening of 24 October. Convinced that Kurita's Center Force had been turned back, Halsey took his powerful
Task Force 38 in pursuit of the Japanese Northern Force, a decoy group composed of one fleet aircraft carrier (), three light carriers, two hybrid battleship-carriers, and their escorts. At 07:30,
Yamato spotted a US "cruiser" and prepared to rain fire. With the crippled
Johnston disappearing behind a rain squall, Yamato recorded the "cruiser" as sunk, though her AP shells allowed
Johnston to survive for the time being. The damage mortally wounded
Johnston for the rest of the engagement, and two hours later she was finished off by gunfire from the light cruiser
Yahagi and the destroyers
Yukikaze, Isokaze, Urakaze, and
Nowaki.
Yamato resumed firing on the escort carriers, but due to the extreme range failed to score any hits for the time being. Around 07:50, the Japanese battleships were attacked by the destroyers and . Both ships opened fire, with
Hoel hitting
Yamato with two 127 mm shells, though neither caused any notable damage. By 07:54, both destroyers launched their torpedoes, which missed their intended target, the battleship , but headed towards
Yamato. Turning to evade them, she was caught in between both spreads, and forced to steam out of the battle for around 10 minutes. While earlier accounts of the battle by US sailors state
Yamato was forced out of the battle permanently by this point, Japanese records firmly disprove this. Once the torpedoes ran out of fuel she turned around and raced back to the battle, making contact with Taffy 3 again at around 08:10, immediately training her guns on the escort carrier . From ,
Yamato fired her main guns, immediately hitting
Gambier Bay on her first salvo with a 46 cm shell that plunged through her flight deck into her hangar bay. At 08:17, another 46 cm shell smashed through the forward hanger bay. At 08:20,
Yamato scored what is commonly attributed as the most fatal hit to the flat top as a 46 cm shell hit
Gambier Bays engine room below the waterline, immediately cutting her speed to 10 knots as she gradually slowed until dead in the water, with
Yamato following up with another pair of hits at 08:23. By 08:30, American destroyers covered
Gambier Bay, leading to a number of Japanese warships switching fire from the carrier to said destroyers. However,
Yamato continued to pound
Gambier Bay with her main battery, and observed her listing more and more to port. Meanwhile, her 155 mm secondary guns reengaged
Hoel. After
Hoel had been scorched by gunfire from
Yamato, the battleship and the heavy cruiser ,
Yamato scored a critical hit that disabled
Hoels last boiler, with further gunfire finishing her off by 08:50. Meanwhile, by 08:43 the abandon ship order was issued in
Gambier Bay and resulted in
Yamato ceasing fire on the now sinking escort carrier. The Japanese ships were taking a toll on Taffy 3, sinking four ships, with
Yamato either sinking or helping to sink all besides the destroyer escort . However, relentless air attacks sank three Japanese heavy cruisers. 's torpedoes were detonated, and her propellers were blown off from bomb hits, while was hit by a bomb down the stack that destroyed her engines, leading to both cruisers being scuttled. Finally,
Chikuma was outright sunk by American torpedo bombers. With Kurita concluding he had sunk at least two fleet carriers, two cruisers, and two destroyers, and under fear of follow up air attacks causing more losses, he ordered the Japanese ships,
Yamato included, to retreat from the battle, meaning the Japanese's primary objectives, the American troop convoys, remained untouched by Japanese surface forces. In the aftermath of the battle,
Yamato was attacked by aircraft from and damaged by two more bomb hits, one destroying some crew quarters and the other impacting on her turret 1, rounding out her engagement in the battle. On 15 November 1944, the 1st Battleship Division was disbanded, and
Yamato became the flagship of the Second Fleet.
Yamatos battle group was attacked by the submarine . The battleship
Kongō and destroyer were lost.
Yamato was immediately dry docked for repairs and anti-aircraft upgrades on reaching Kure, where several of the battleship's older anti-aircraft guns were replaced. On 25 November, Captain
Aruga Kōsaku was named
Yamatos commander. On 19 March, American carrier aircraft from
TG 58.1 attacked Kure Harbour. Although 16 warships were hit,
Yamato sustained only minor damage from several near misses and from one bomb that struck her bridge. The intervention of a squadron of
Kawanishi N1K1 "Shiden" fighters (named "George" by the Allies) flown by veteran Japanese fighter instructors prevented the raid from doing too much damage to the base and assembled ships, while
Yamatos ability to maneuver – albeit slowly – in the Nasami Channel benefited her. The Imperial Japanese Navy's response was to organise a mission codenamed
Operation Ten-Go that would commit much of Japan's remaining surface strength.
Yamato and nine escorts (the cruiser and eight destroyers) would sail to Okinawa and, in concert with
kamikaze and Okinawa-based army units, attack the Allied forces assembled on and around Okinawa.
Yamato would then be
beached to act as an unsinkable gun emplacement and continue to fight until destroyed. However, the Allies had intercepted and decoded their radio transmissions, learning the particulars of Operation Ten-Go. Further confirmation of Japanese intentions came around 20:00 when the Surface Special Attack Force, navigating the
Bungo Strait, was spotted by the American submarines and . Both reported
Yamatos position to the main
American carrier strike force, At about 12:30, 280 bomber and torpedo bomber aircraft arrived over the Japanese force. , which had fallen out of formation with engine trouble, was caught and sunk by a detachment of aircraft from . The Surface Special Attack Force increased speed to , and following standard Japanese anti-aircraft defensive measures, the destroyers began circling
Yamato. The first aircraft swooped in to attack at 12:37.
Yahagi turned and raced away at in an attempt to draw off some of the attackers; it drew off only an insignificant number.
Yamato was not hit for four minutes, but at 12:41 two bombs obliterated two of her triple 25 mm anti-aircraft mounts and blew a hole in the deck. A third bomb destroyed her radar room and the starboard aft 127 mm mount. At 12:45 a single torpedo struck
Yamato far forward on her port side, sending shock waves throughout the ship. These had only minor effects, but no detailed information about this hit survived the battle. At 12:46, another two bombs struck the port side, one slightly ahead of the aft 155 mm centreline turret and the other right on top of the gun. These caused a great deal of damage to the turret and its magazines; only one man survived. This attack left
Yamato in a perilous position, listing ° to port. Counterflooding of all remaining starboard void spaces lessened this to °, but further correction would have required repairs or flooding the starboard engine and fire rooms. Although the battleship was not yet in danger of sinking, the list meant the main battery was unable to fire, and her speed was limited to . The third and most damaging attack began around 13:40. At least four bombs hit the ship's superstructure and caused heavy casualties among her 25 mm anti-aircraft gun crews. Many near misses drove in her outer plating, compromising her defense against torpedoes. Most serious were four more torpedo impacts. Three exploded on the port side, increasing water flow into the port inner engine room and flooding yet another fire room and the steering gear room. With the auxiliary steering room already under water, the ship lost maneuverability and became stuck in a starboard turn. The fourth torpedo most likely hit the starboard outer engine room, which, along with three other rooms on the starboard side, was being counterflooded to reduce the port list. The torpedo strike accelerated the rate of flooding and trapped many crewmen. At 14:02, the order was belatedly given to abandon ship. By this time,
Yamatos speed had dropped to and her list was increasing. Fires raged out of control, and alarms on the bridge warned of critical temperatures in the forward main battery magazines. Protocol called for flooding the magazines to prevent explosion, but the pumping stations had been knocked out. At 14:05,
Yahagi sank, the victim of twelve bombs and seven torpedoes. At the same time, a final flight of torpedo bombers attacked
Yamato from her starboard side. Her list was such that the torpedoes – set to a depth of – struck the bottom of her hull. The battleship continued her inexorable roll to port. The experience of the sinking of the ship was described by a Japanese survivor (
Yoshida Matsuro) in
Senkan Yamato no Saigo, translated into English as
Requiem for Battleship Yamato. ==Wreck discovery==