Originally planned to be the third Fusō-class battleship, experience gained in the construction of the Fusō-class revealed a number of design issues, including weak armament and protection, which forced a redesign and new classification.
Ise was laid down at the Kawasaki Heavy Industries shipyard in Kobe on 5 May 1915, launched on 12 November 1916, and completed on 15 December 1917 and assigned to the Kure Naval District.
Completed too late for service in World War I, in the early 1920s, Ise participated in numerous patrols off the Siberia coast and in northern waters in support of Japan's Siberian Intervention against the Bolshevik Red Army.
On 12 April 1922, while at Yokohama, Ise hosted a delegation which included the Prince of Wales (future King Edward VIII of the United Kingdom), who was accompanied by his second cousin, the future Lord Mountbatten of Burma. From the mid-1920s through the late 1930s, Ise patrolled mostly off of the China coast.
In 1928-1929, Ise was rebuilt at the Kure Naval Arsenal, with its foremast increased in height in the distinctive "pagoda" style similar to Haruna. The fore funnel was fitted with a curved smoke cap, and a flying off platform for Yokosuka E1Y2 Type 14floatplanes was fitted atop No. 5 main turret. Later, from 1930–1931, additional searchlights and a derrick was installed at the stern for handling floatplanes.
However, a more complete upgrade occurred from 20 November 1931-10 February 1932 at Kure Naval Arsenal, which involved shortening the mainmast top section, replacing all the 76 mm (3.0 in)/40 cal AA guns with eight Type 89 127 mm (5.0 in)/40 cal AA guns (4x2), and adding four Vickers Type 40 mm (1.6 in) AT/AA guns (2x2). The shielded 140 mm (5.5 in)/40 cal guns from the forecastle deck were removed and a catapult and aircraft handling crane were fitted to the fantail. On 14 May 1933, a second catapult and three Type 90 seaplanes were added.
From 1 August 1935, Ise was drydocked at Kure Naval Arsenal and underwent an extensive reconstruction and modernization. The 24 mixed-fired boilers were replaced by eight new Kampon oil-fired boilers and new Kampon geared turbines were fitted. Maximum speed increased to 25.4 kn (47.0 km/h; 29.2 mph) (25.21 kn (46.69 km/h; 29.01 mph) was reached during trials). The fore funnel was removed and stern lengthened by 7.62 m (25 ft). Anti-torpedo bulges were added and her six submerged torpedo tubes were removed. The elevation of Ise's main battery (with the exception of the aftermost turret No. 6) was increased to 43°. Two forward 140 mm (5.5 in) casemate guns were removed. The elevation of secondary guns was increased from 20° to 30° and range increased from 15,800 m (51,800 ft) to 19,100 m (62,700 ft). Four 40 mm (1.6 in) Vickers AA guns were replaced by 10Type 96 twin 25 mm (0.98 in)/60 cal AA guns. The original catapult was replaced by a Kure Type No. 2 Mod. 5 catapult and the aircraft handling deck was extended. Reconstruction was completed by 27 March 1937.
Start of the Pacific War
Despite these efforts at modernization and upgrading, Ise was still considered obsolete by the start of the Pacific War due to her relatively slow speed, large crew, and short range, and never saw combat as a battleship. Ise participated in the attack on Pearl Harbor (albeit on a sortie from Hashirajima as far as the Bonin Islands) and pursued but did not catch the American carrier force that had launched the Doolittle Raid on 18 April 1942.
In May, Ise had an accident which flooded her No. 2 engine room. During repair work, Ise was fitted with one of the first experimental model Type 21 radar sets in the Japanese navy.
Construction
 |
| Costruction of Battleship Ise |
To
partially compensate for the loss of carrier strength at the Battle of Midway, Navy Aircraft Department
began plans to convert the Ise-class battleships to full-sized aircraft carriers each carrying 54
planes. This concept was abandoned due to lack of time and resources and a
hybrid battleship/carrier concept was adopted. Ise was
dry-docked, and her aft No. 5 and No. 6 main turrets were removed and replaced
by a hangar surmounted by a 70 m
(230 ft) long flight deck and
a "T"-shaped aircraft elevator. This was long enough to permit the
launch of aircraft, but not their recovery. Plans called for the new hangar to
carry nine planes inside, with 11 on deck and two on each catapult; however, it
was later realized that a single faulty aircraft engine could ruin the whole
concept. To prevent jams, the deck was fitted with two rails, 12 turntables,
trolleys and tie-downs. Two 25 m (82 ft) Model 11 catapults were
installed on tall supports on the port and starboard sides forward of the
flight deck. A collapsible derrick crane was fitted port abaft. The new deck
was covered with 200 mm (7.9 in) of concrete to compensate for the unbalanced
condition created after removal of the aft armament. A 1 m (3 ft)
thick layer of concrete was also poured around the main and reserve steering
rooms and a 150 mm (5.9 in) horizontal armor cover was added.
Additional
anti-aircraft weapons were installed to better fight off aerial attack. The
eight single 127 mm (5.0 in) DP guns were replaced with eight
twin-mounts, and the Type 96 25 mm (0.98 in) AA guns were increased
from 20 to 57 (including 19 triple-mounts). Type 21 air-search radar and two
Type 22 surface-search radars were also installed. As modified, Ise could
carry 22 aircraft. The operational concept envisioned Iseaccompanying
the Kido Butai (Carrier Strike Force),
and launching its 11 Yokosuka D4Y2 Suisei ("Judy") dive bombers and 11 Aichi E16A Zuiun ("Paul") seaplanes that are capable of diving
attacks to add another 44 bombers to the Strike Force. The Suisei had
to land either on a conventional carrier or on land bases, whereas the E16A
could be hoisted back aboard after landing near the ship by using a crane. Ise's
final aircraft allowance called for 14 E16As and eight D4Y2s.
The
rebuild was officially completed on 8 October 1943; however, as training with
the new pilots was not completed by autumn 1944, Ise was never
used in its new configuration in an operational mission. Its aircraft were
offloaded to land bases, and Ise continued to be used as a
pure battleship in the cover force.
Ise made a sortie to Truk in
October 1943, conveying a detachment of the IJA
52 Division and supplies.
In
a refit in Kure in May 1944, 47 additional Type 96 25 mm (0.98 in) AA
guns (12 triple, 11 single mount) were added, bringing the total to 104 guns.
Two Type 2 IFF units
were also installed. In July, two Type 13 air-search radar and an E27 Radar
detector were installed. From the end of September 1944, six racks of 30-tube,
127 mm (5.0 in) anti-aircraft rocket launchers were added. The
rockets had multiple incendiary shrapnel charges and a timed fuse.
Battle of Leyte Gulf and afterwards
Ise was slightly damaged in the Battle off Cape Engaño, during which Ise's gunners shot down five of the 10 attacking dive bombers, suffering from one small hit on the No. 2 turret. Ise's anti-aircraft cover was ineffective, and by the end of the battle, USN aircraft had sunk the Japanese aircraft carriers Zuikaku, Zuihō, and Chitose and the destroyer Akizuki. Towards the end of the battle, in the fourth attack, Ise was attacked by 85 dive bombers. After 34 near misses, Ise's hull plates near the waterline ruptured and port boiler rooms were damaged; a bomb damaged the port catapult, and five crewmen were killed, with 71 wounded.
After returning to Japan, from 29 October, the aft catapults were removed to improve the firing arcs of the No. 3 and No. 4 turrets.
Ise was dispatched south to Lingga and Singapore in early 1945 for Operation Kita. On the approach to Singapore, Ise was slightly damaged by a naval mine. In Operation Kita, Ise, her sister ship Hyuga, and cruiser Ōyodo were loaded with critically needed strategic war supplies (oil, rubber, tin, zinc, and mercury) and evacuate 1,150 oil field personnel back to Japan.Ise arrived back safely in Moji on 19 February 1945, having evaded or escaped pursuit by twenty three Allied submarines along the way.[citation needed]
Final role
From 25 February 1945 until the surrender of Japan, Ise remained docked at Kure, without fuel or aircraft, and repainted in acamouflage olive green with splotches. The camouflage was not effective against USN Task Force 58 carrier-based aircraft on 19 March 1945, when more than 240 aircraft attacked Kure and Ise was hit by two bombs. Re-designated as a fourth-class reserve ship on 20 April, Ise was towed to Ondo Seto (between Kure and Kurahashijima) to serve as a floating anti-aircraft battery. She was attacked again on 24 July by 60 carrier-based aircraft, whose bombs hit the starboard bow, flight deck, main deck, No. 3 turret and bridge, killing Captain Mutaguchi, other bridge officers and around 50 crewmen. On 28 July, in another attack on Ise, she was struck by five 454 kg (1,000 lb) bombs dropped by F4U Borsairs from USS Hancock, and eleven more bombs dropped by other aircraft from TF 58. Ise listed starboard and sank in shallow water at 34°15′N 132°31′E. She was removed from theNavy list on 20 November 1945.
Ise's underwater hulk section was for some time left where it was and she was scrapped without being raised by the Kure Dockyard of the Harima Zosen Yard from 9 October 1946-4 July 1947.
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