Aoba class heavy cruisers (1926)

Aoba class heavy cruisers (1926)

Japanese Navy Japan, 1926. Heavy Cruisers Aoba, Kinugasa

The Improved Furutaka

The two heavy cruisers of the Aoba class followed the Furutaka a year apart, so that their development did not take into account the defects of the two previous ships. They had from the start three double turrets and AA parts of 120 mm. On the other hand their tubes were always in six groups of two on the flanks. A first modification intervenes in 1932: They received 8 machine guns of 13.2 mm in reinforcement. In 1938-40, their fixed tubes were replaced by two quadruple rotating benches on the deck, while they were equipped with lateral ballasts. Their DCA was reinforced with 25mm guns and another four heavy machine guns, bringing the total to 12.

Aoba ONI US Navy archives recoignition plate
Aoba ONI US Navy archives recoignition plate

Aoba on trials in 1927
Aoba on trials in 1927

⚠ Note: This post is in bad need of rewriting, expected in 2024.


In operations, the two ships were all fights. Particularly active in the Solomon Islands, they participated in the “massacre” of the Savo Island, the night of August 8, 1942. The Kinugasa was sunk by a plane embarked on November 14, 1942 during the second battle of Guadalcanal, while the Aoba survived long enough to see his armament increase to 15 pieces AA 25 mm, then 42 two months later, in May-June 1944. He was also added a radar, while he lost one of his two banks of tubes launches -torpilles. He was at the Battle of the Coral Sea, at the first battle of Guadalcanal, at the second, and was finally wiped out by the raids of the 3rd US Air Fleet at the Kure Naval Base on July 25, 1945.

Aoba sunk at Kure, 1945

Aoba off Buin, Bougainville, October, 13 1942 Battle of Cape Esperance

Displacement 7100 t. standard; 8760 t. Fully loaded
Dimensions 183,58 m x 15,83 m x 5,71 m
Propulsion 4 propellers, 4 turbines, 12 boilers, 102 000 hp, 34,5 knots
Armor: 25 to 76 mm
Armament: 6 x 203 (3×2), 4 x 120, 8 x 25 AA, 4 x 13.2 mm AA, 12 x 610 mm TTs (6×2), 1 plane
Crew 625

Aoba 1933
Cruiser Aoba in 1933, 2 views Author’s illustration

Aoba 1941
Cruiser Aoba in 1941, after refit – HD 1/200 Author’s illustration

Sources/Read More
Conway’s all the worlds fighting ships 1921-1946

IJN ww2 IJN Aoba

sea trials

Aoba (青葉) was first of her namesake class to be completed (Named after Mount Aoba, a volcano located behind Maizuru, Kyoto) after being Launched in 1926, and heavily modernized in 1938-40. IJN Aoba patrolled along the China coast and from December 1941, she became flagship of Rear Admiral Aritomo Goto, CruDiv 6. She participated in the Battle of Coral Sea in May 1942, the The Battle of Savo Island, 7 August 1942 (damaged) against USS Astoria, Quincy, Vincennes and HMAS Canberra, the Battle of Cape Esperance on 11 October 1942 against USS San Francisco, Boise, Salt Lake City, and Helena (she was hit by up to forty 6-inch and 8-inch shells), was repaired spent time in Kure, statione din Singapore from 24 December 1943, soldiered in the Philippines, heavily damaged, repaired again and finally crippled by bombing, sinking in the shallow waters of Kure harbor in April 1945, followed by more damage after two raids in late July and finished off on 24 July 1945. She was formally stricken on 20 November 1945, her wreck scrapped in 1946–47.

Cruiser Aoba in the 1930s

IJN ww2 IJN Kinugasa

IJN Kinugasa

Second ship launched and completed of the class, IJN Kinugasa, named after a mount. She was flagship of the 5th CruDiv, then 6th and 7th. During a training exercise on 11 July 1929, she collided with I-55 while using the cruiser as a target practice. She also served off the China coast (1928–1929), making other patrols there in the 1930s, place din reserve by September 1937, extensively modernized at Sasebo and recommissioned in October 1940.

Her combat records included: CruDiv6 flagship, Rear Admiral Aritomo Goto, First Fleet (Vice Admiral Takasu Shiro) with Aoba, Furutaka and Kako. Invasion of Guam, second invasion of Wake Island, Truk (Caroline Islands) in Jan-May 1942 protecting convoys and landings in the Solomon Islands, New Guinea, Rabaul, Kavieng, Buka, Shortland, Kieta, Manus Island, Admiralty Islands and Tulagi. At the Battle of Coral Sea

she was undamaged, and back in Truk in July, reassigned to the 8th fleet. She fought at the Battle of Cape Esperance on 11 October 1942, damaging Boise and Salt Lake City but taking four hits and was back to the Shortland. She met her fate at the Naval Battle of Guadalcanal: On 14 October 1942, as flagship Crudiv 6 she teamed with Chōkai to bombard Henderson Field and covered on 24–26 October and 1–5 November replacement convoys of troops.

On 14 November, she was attacked by USMC land-based Grumman TBF Avenger torpedo bombers and Douglas SBD Dauntlesses from USS Enterprise. The attack started at 9:30 and at 11:22, she capsized and sank off Rendova Island, stricken on 15 December 1942.

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