Debut: July 2017



.: Jun Zhou's IJN Yamashiro & IJN Akebono


Aoshima (002452) & Pit Road



Modelling Time:

1 month

PE/Resin Detail:

Yamashiro PE & Wooden Deck


"Aoshima 'Retake' Yamashiro with dedicated detail set.
Akebono updated to late war version. "

Japanese battleship Yamashiro

From Wikipedia, the free encyclopedia
Japanese battleships Yamashiro, Fuso and Haruna.jpg
Yamashiro with Fusō and Haruna (in the distance), Tokyo Bay, 1930s
Empire of Japan
Name: Yamashiro
Namesake: Yamashiro Province
Builder: Yokosuka Naval Arsenal
Laid down: 20 November 1913
Launched: 3 November 1915
Commissioned: 31 March 1917
Struck: 31 August 1945
Fate: Sunk during the Battle of Surigao Strait, 25 October 1944
General characteristics (as built)
Class and type: Fusō-class battleship
  • 192.024 meters (630 ft 0 in) (p.p.)
  • 202.7 meters (665 ft) (o.a.)
Beam: 28.7 meters (94 ft 2 in)
Draft: 8.7 meters (28 ft 7 in)
Installed power:
Speed: 22.5 knots (41.7 km/h; 25.9 mph)
Range: 8,000 nmi (15,000 km; 9,200 mi) at 14 knots (26 km/h; 16 mph)
Complement: 1,193
General characteristics (1944)
Displacement: 34,700 long tons (35,300 t)
Length: 212.75 m (698.0 ft) (o.a.)
Beam: 33.1 m (108 ft 7 in)
Draft: 9.69 meters (31 ft 9 in)
Installed power:
  • 75,000 shp (56,000 kW)
  • 6 × water-tube boilers
Propulsion: 4 × steam turbines
Speed: 24.5 knots (45.4 km/h; 28.2 mph)
Range: 11,800 nmi (21,900 km; 13,600 mi) at 16 knots (30 km/h; 18 mph)
Complement: approximately 1,900
Sensors and
processing systems:
Armor: Deck: 152–51 mm (6–2 in)
Aircraft carried: 3 × floatplanes
Aviation facilities: 1 × catapult

Yamashiro (山城, "Mountain castle", named for Yamashiro Province) was the second of two Fusō-class dreadnought battleships built for the Imperial Japanese Navy. Launched in 1915 and commissioned in 1917, she initially patrolled off the coast of China, playing no part in World War I. In 1923, she assisted survivors of the Great Kantō earthquake.

Yamashiro was modernized between 1930 and 1935, with improvements to her armor and machinery and a rebuilt superstructure in the pagoda mast style. Nevertheless, with only 14-inch guns, she was outclassed by other Japanese battleships at the beginning of World War II, and played auxiliary roles for most of the war.

By 1944, though, she was forced into front-line duty, serving as the flagship of Vice-Admiral Shōji Nishimura's Southern Force at the Battle of Surigao Strait, the southernmost action of the Battle of Leyte Gulf. During fierce night fighting in the early hours of 25 October against a superior American force, Yamashiro was sunk by torpedoes and naval gunfire. Nishimura went down with his ship, and only 10 crewmembers survived.


The ship had a length of 192.024 meters (630.00 ft) between perpendiculars and 202.7 meters (665 ft) overall. She had a beam of 28.7 meters (94 ft 2 in) and a draft of 8.7 meters (29 ft).[1] Yamashiro displaced 29,326 long tons (29,797 t) at standard load and 35,900 long tons (36,500 t) at full load. Her crew consisted of 1,198 officers and enlisted men in 1915 and about 1,400 in 1935.[2]

During the ship's modernization during 1930–35, her forward superstructure was enlarged with multiple platforms added to her tripod foremast. Her rear superstructure was rebuilt to accommodate mounts for 127-millimeter (5.0 in) anti-aircraft (AA) guns and additional fire-control directorsYamashiro was also given torpedo bulges to improve her underwater protection and to compensate for the weight of the additional armor. In addition, her stern was lengthened by 7.62 meters (25.0 ft). These changes increased her overall length to 212.75 m (698.0 ft), her beam to 33.1 m (108 ft 7 in) and her draft to 9.69 meters (31 ft 9 in). Her displacement increased nearly 4,000 long tons (4,100 t) to 39,154 long tons (39,782 t) at deep load.[2]


The ship had two sets of Brown-Curtis direct-drive steam turbines, each of which drove two propeller shafts. The turbines were designed to produce a total of 40,000 shaft horsepower (30,000 kW), using steam provided by 24 Miyahara-type water-tube boilers, each of which consumed a mixture of coal and oil. Yamashiro had a stowage capacity of 4,000 long tons (4,100 t) of coal and 1,000 long tons (1,000 t) of fuel oil,[3] giving her a range of 8,000 nautical miles (15,000 km; 9,200 mi) at a speed of 14 knots (26 km/h; 16 mph). The ship exceeded her designed speed of 22.5 knots (41.7 km/h; 25.9 mph) during her sea trials, reaching 23.3 knots (43.2 km/h; 26.8 mph) at 47,730 shp (35,590 kW).[4]

During her modernization, the Miyahara boilers were replaced by six new Kanpon oil-fired boilers fitted in the former aft boiler room, and the forward funnel was removed. The Brown-Curtis turbines were replaced by four geared Kanpon turbines with a designed output of 75,000 shp (56,000 kW). On her trials, Yamashiro's sister ship Fusō reached a top speed of 24.7 knots (45.7 km/h; 28.4 mph) from 76,889 shp (57,336 kW).[1] The fuel storage of the ship was increased to a total of 5,100 long tons (5,200 t) of fuel oil that gave her a range of 11,800 nautical miles (21,900 km; 13,600 mi) at a speed of 16 knots (30 km/h; 18 mph).[3]


The twelve 45-calibre 14-inch guns of Yamashiro were mounted in six twin-gun turrets, numbered one through six from front to rear, each with an elevation range of −5 to +30 degrees.[5] The turrets were arranged in an unorthodox 2-1-1-2 style with superfiring pairs of turrets fore and aft; the middle turrets were not superfiring, and had a funnel between them. The main guns and their turrets were modernized during the ship's 1930 reconstruction; the maximum elevation of the main guns was increased to +43 degrees, increasing their maximum range from 25,420 to 32,420 metres (27,800 to 35,450 yd). Initially, the guns could fire at a rate of 1.5 rounds per minute, and this was also improved during her first modernization.[5]

Originally, Yamashiro was fitted with a secondary armament of sixteen 50-caliber 6-inch guns mounted in casemates on the upper sides of the hull. Each gun could fire a high-explosive projectile to a maximum range of 22,970 yards (21,000 m)[6] at up to six shots per minute.[7] She was later fitted with six high-angle 40-caliber three-inch AA guns, in single mounts on both sides of the forward superstructure and both sides of the second funnel, as well as on both sides of the aft superstructure.[1] These guns had a maximum elevation of +75 degrees, and could fire a 5.99-kilogram (13.2 lb) shell at a rate of 13 to 20 rounds per minute to a maximum height of 7,200 meters (23,600 ft).[8] The ship was also fitted with six submerged 533-millimeter (21.0 in) torpedo tubes, three on each broadside.[9]

Yamashiro and the aircraft carrier Kaga in Kobe Bay, October 1930

During Yamashiro's modernization in the early 1930s, all six three-inch guns were removed and replaced with eight 40-caliber 127-millimeter dual-purpose guns, fitted on both sides of the fore and aft superstructures in four twin-gun mounts.[10] When firing at surface targets, the guns had a range of 14,700 meters (16,100 yd); they had a maximum ceiling of 9,440 meters (30,970 ft) at their maximum elevation of +90 degrees. Their maximum rate of fire was 14 rounds a minute, but their sustained rate of fire was around eight rounds per minute.[11]

The improvements made during the reconstruction increased Yamashiro's draft by 1 meter (3 ft 3 in); the two foremost six-inch guns were removed, as the same guns on her sister ship Fusō had gotten soaked in high seas after that ship's reconstruction. The ship's light-AA armament was augmented by eight 25 mm Type 96 light AA guns in twin-gun mounts. Four of these mounts were fitted on the forward superstructure, one on each side of the funnel and two on the rear superstructure.[9] This was the standard Japanese light-AA gun during World War II, but it suffered from severe design shortcomings that rendered it a largely ineffective weapon. According to historian Mark Stille, the twin and triple mounts "lacked sufficient speed in train or elevation; the gun sights were unable to handle fast targets; the gun exhibited excessive vibration; the magazine was too small, and, finally, the gun produced excessive muzzle blast".[12] The configuration of the AA guns varied significantly over time; in 1943, 17 single and two twin-mounts were added for a total of 37.[13] In July 1944, the ship was fitted with another 24 single, nine twin and eight triple-mounts, for a total of 92 anti-aircraft guns in her final configuration.[14] The 25-millimeter (0.98 in) gun had an effective range of 1,500–3,000 meters (1,600–3,300 yd), and an effective ceiling of 5,500 meters (18,000 ft) at an elevation of 85 degrees. The maximum effective rate of fire was only between 110 and 120 rounds per minute because of the frequent need to change the fifteen-round magazines.[15]

Also in July 1944, the ship was provided with three twin-gun and 10 single mounts for the license-built 13.2 mm Hotchkiss machine gun.[14] The maximum range of these guns was 6,500 meters (7,100 yd), but the effective range against aircraft was only 1,000 meters (1,100 yd). The cyclic rate was adjustable between 425 and 475 rounds per minute, but the need to change 30-round magazines reduced the effective rate to 250 rounds per minute.[16]




Japanese destroyer Akebono (1930)

From Wikipedia, the free encyclopedia
For other ships with the same name, see Japanese destroyer Akebono.
Akebono II.jpg
Akebono underway on 29 July 1936.
Empire of Japan
Name: Akebono
Namesake: Japanese destroyer Akebono (1899)
Ordered: 1923 Fiscal Year
Builder: Fujinagata Shipyards
Yard number: Destroyer No. 52
Laid down: 25 November 1929
Launched: 7 November 1930
Commissioned: 31 July 1931
Struck: 10 January 1945
Fate: Sunk in air raid, 14 November 1944
General characteristics
Class and type: Fubuki-class destroyer
  • 111.96 m (367.3 ft) pp
  • 115.3 m (378 ft) waterline
  • 118.41 m (388.5 ft) overall
Beam: 10.4 m (34 ft 1 in)
Draft: 3.2 m (10 ft 6 in)
  • 4 × Kampon type boilers
  • 2 × Kampon Type Ro geared turbines
  • 2 × shafts at 50,000 ihp (37,000 kW)
Speed: 38 knots (44 mph; 70 km/h)
Range: 5,000 nmi (9,300 km) at 14 knots (26 km/h)
Complement: 219
Service record

Akebono ( "Daybreak")[1] was the eighteenth of twenty-four Fubuki-class destroyers, built for the Imperial Japanese Navy following World War I. When introduced into service, these ships were the most powerful destroyers in the world.[2] They served as first-line destroyers through the 1930s, and remained formidable weapons systems well into the Pacific War.


Construction of the advanced Fubuki-class destroyers was authorized as part of the Imperial Japanese Navy's expansion program from fiscal 1923, intended to give Japan a qualitative edge with the world's most modern ships.[3] The Fubuki class had performance that was a quantum leap over previous destroyer designs, so much so that they were designated Special Type destroyers (特型 Tokugata). The large size, powerful engines, high speed, large radius of action and unprecedented armament gave these destroyers the firepower similar to many light cruisers in other navies.[4] Akebono, built at the Fujinagata Shipyards in Osaka was the seventh in an improved series, which incorporated a modified gun turret which could elevate her main battery of Type 3 127 mm 50 caliber naval guns to 75° as opposed to the original 40°, thus permitting the guns to be used as dual purpose guns against aircraft.[5] Akebono was laid down on 25 October 1929, launched on 7 November 1930 and commissioned on 31 July 1931.[6] Originally assigned hull designation "Destroyer No. 52", she was named Akebono before her launch.

Operational history

On completion, Akebono was assigned to Destroyer Division 7 under the IJN 2nd Fleet. During the Second Sino-Japanese War, from 1937, Ayanami covered landing of Japanese forces in Shanghai and Hangzhou. From 1940, she was assigned to patrol and cover landings of Japanese forces in south China and participated in the Invasion of French Indochina.

World War II history

At the time of the attack on Pearl HarborAkebono was assigned to Destroyer Division 7 of the IJN 1st Air Fleet, but was unable to participate in the attack due to a damaged propeller, and was held in reserve in Japanese home waters as a guard vessel. Repairs completed by mid-January 1942, Akebono was part of the escort for the aircraft carriers Hiryū and Sōryū during air strikes against Ambon. She was later part of the escort for the cruisers Nachi and Haguro during "Operation J" (the Japanese invasion of the eastern Netherlands East Indies). On 1 March, at the Battle of the Java SeaAkebono assisted in sinking the British cruiser HMS Exeter and destroyer HMS Encounter, and the American destroyer USS Pope.[7] She returned to Yokosuka Naval Arsenal for repairs at the end of March.

At the end of April, Akebono escorted Myōkō and Haguro to Truk, and subsequently joined Admiral Takeo Takagi's force at the Battle of the Coral Sea.[8] At the end of May, she escorted Zuikaku from Truk back to Kure Naval Arsenal.

During the Battle of Midway in early June, Akebono was part the diversionary force in "Operation AL" that attacked Dutch Harbor, Alaska in the Aleutians campaign, and returned to Yokosuka in early July.

On 14 July, Akebono was reassigned to the Combined Fleet, and escorted the battleship Yamato and aircraft carrier Taiyō at the Battle of the Eastern Solomons on 24 August. Akebono remained assigned to Taiyōthrough September, and to the aircraft carrier Unyō from October to February 1943. Through the rest of 1943, Akebono continued to serve as an escort for UnyōTaiyōRyūhōZuihō or Jun'yō in various missions throughout the Pacific, except for a period in December when she was assigned to "Tokyo Express" transport missions in the Solomon Islands.[9]

On 1 January 1944, Akebono was reassigned to the IJN 5th Fleet. On 14 January, she rescued 89 survivors of torpedoed destroyer Sazanami en route to Truk. Returning to Yokosuka for repairs and refit on 25 January, she was reassigned to Ōminato Guard District for patrols of northern waters through October. However, as the situation continued to deteriorate for Japan in the Philippines, she was reassigned to Admiral Kiyohide Shima's Diversionary Force at the Battle of Surigao Strait on 24 October. The following day, Akebono rescued about 700 survivors of the heavy cruiser Mogami and then scuttled her with a torpedo.[10]

On 13 November 1944, Akebono, while alongside destroyer Akishimo at Cavite pier near Manila was attacked in a USAAF air raid. A direct bomb hit set both ships ablaze, and the following day a large explosion on Akishimo blew a hole in Akebono, which sank upright in shallow water at position 14°35′N 120°55′ECoordinates14°35′N 120°55′E, with 48 crewmen killed and 43 wounded.[11]

On 10 January 1945, Akebono was removed from the navy list.[12]



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