";s:4:"text";s:24649:"Akagi on trials in 1927; the ship originally had two short take-off decks and a main landing deck. [20], The battlecruiser Amagi, which was being converted to an aircraft carrier under the terms of the treaty, was wrecked in the Great Kantō earthquake in 1923 and rendered unusable. Tosa-class battleship converted to aircraft carrier 38,813 Tons (standard) 812' 6" x 106' 8" x 31' 1" 10 x 200mm guns 8 x 2 127mm AA guns 12 x 2 25mm AA guns Aircraft: 72 + 18 stored IJN September 15, 1928 IJN c1930 IJN c1935 IJN December 1941: Ship History Built by Kawasaki and the Yokosuka Naval Arsenal at Yokosuka. [26][C], Planned battleship of the Imperial Japanese navy, Shipwrecks and maritime incidents in 1925, The 1917 authorization provided for the construction of, in addition to, Gibbs and Tamura, "Question 58/80," 192, 194, Office of Naval Intelligence, "Monthly Information Bulletin", "Says Japan's Navy Carried Out Treaty; Admiral Takarahe Declares That the Last of Its Ten Ships Has Been Scrapped", https://en.wikipedia.org/w/index.php?title=Japanese_battleship_Tosa&oldid=1013501435, Short description is different from Wikidata, Articles containing Japanese-language text, Pages containing links to subscription-only content, Pacific Ocean articles missing geocoordinate data, Creative Commons Attribution-ShareAlike License, This page was last edited on 21 March 2021, at 23:19. [9][10][11][B], In August 1922, Tosa was moved to Kure, still incomplete. It would have consisted of a 63.5 mm (2.5 in) plate of New Vickers non-cemented armor on top of a 37 mm (1.5 in) plate of high-tensile steel (HTS) above the engine and boiler rooms. 938 views, 2 today; 94 downloads, 0 today; 27. [22] Later that month, the United States Office of Naval Intelligence reported that "work on the dismantling of [Tosa] has been going on at the Kure Navy Yard and everything possible has been removed. Test three (9 June) was a 300 kg (660 lb) 8th year type torpedo on the starboard side at a depth of 4.05 m (13.3 ft) under the ship's waterline; four (12 June) was a 350 kg (770 lb) torpedo to port, 4.9 m (16 ft) below the waterline. The incomplete Tosa-class battleship Kaga, on which work had stopped on 5 February 1922, was reordered as a carrier to replace Amagi. Super-dreadnought battleship built for the Imperial Japanese Navy (IJN). The intention is to fill her hull with sand and gravel, tow her out to deep water near the entrance to Kure, open her sea cocks, and send her to the bottom. Each gun could fire a 38-kilogram (84 lb) high-explosive projectile at a rate up to 10 rounds per minute[12] and was provided with 120 rounds. Due to the changes demanding to delay Mutsu's construction, however, this design was rejected. Tosa. They were ordered as part of the "Eight-Eight" … The Tosa-class battleships (土佐型戦艦 Tosa-gata Senkan?) I have been an aircraft carrier, a battleship, a weapons testbed, and a target; they worked and reworked me to the bone. Imgur Biography on Tosa. Each of these shells weighed 1,020 kilograms (2,250 lb) and had a muzzle velocity of 780 meters per second (2,600 ft/s). I would like to fight alongside her someday. [14], The ships would have had an internal torpedo bulge to provide protection against underwater explosions. Kaga's 1935 reconstruction removed the lower two decks and extended the top flight deck to the bow. They were ordered as part of the "Eight-Eight" fleet for the Imperial Japanese Navy (IJN) during the early 1920s. [10], For the next few months, Tosa was given to the Hiroshima gunnery school for use as a target. [18][19], Another test conducted around this time involved a 406 mm (16.0 in) gun firing a shell at Tosa. They were the first Japanese battleships to be named after a single province, the city of Tosa, in the island of Honshu, Japan, and the last Japanese battleship to be built in World War II. They would have been protected by a waterline main belt of Vickers cemented armor that sloped outwards 15 degrees at the top. She missed the Indian Ocean raid in April as she had to return to Japan for repairs after hitting a reef in February. [6][7] Her guns were turned over to the Imperial Japanese Army for use as coastal artillery; one of her main gun turrets was installed near Busan, Korea, in 1930 and another on Tsushima Island in 1933. This sparked an interest in optimizing underwater performance of Japanese shells that culminated in production of the Type 91 armor-piercing shell. [8] Ultimately, the battleship was not launched until 18 December 1921, two months behind schedule. "Akagi & Kaga". The first ship, Tosa, was canceled according to the terms of the Washington Naval Treaty before it could be completed, and was used in experiments testing the effectiveness of its armor scheme before being scuttled in the Bungo Channel. The Tosa-class was the first large battleship of the Imperial navy. The ships were larger versions of the preceding Nagato class, and carried an additional 41-centimeter (16.1 in) twin-gun turret.The design for the class served as a basis for the Amagi-class battlecruisers. Which focuses on the mission against warships It is designed for the secondary function of the carrier and modern surface ships as the anti-ship role and supports naval gunfire. The Tosa-class Guided Missile Battleship (Japanese: 加賀型戦艦誘導ミサイル戦艦) is an electromagnetically guided missile-guided artillery battleship of the Kyoto Federation Navy (KFN). The Tosa class would have had a metacentric height of 1.292 meters (4 ft 2.9 in) at normal load. unlike its sister Kaga being converted to a carrier like the Lexington by the rules of the Washington Naval Treaty at the time … During the late 19th and early 20th centuries the battleship was the most powerful type of warship, and a fleet centered around the battleship was part of the command of the sea doctrine for several decades. Based on Japanese studies of the British experience at the Battle of Jutland, the ships were to include new features over previous designs, including higher steaming speed despite increased tonnage, flush decks, and inclined armor. The ships were larger versions of the preceding Nagato class, and carried an additional 41-centimeter (16.1 in) twin-gun turret. to the full completion. The carrier supported Japanese troops in China during the Second Sino-Japanese War of the late 1930s, and took part in the attack on Pearl Harbor on 7 December 1941 and the invasion of Rabaul in the Southwest Pacific in January 1942. Numbered one through five from front to rear, the hydraulically powered turrets had an elevation range of −2 to +35 degrees. Additional 41 cm twin-gun turret. The battleships would have been armed with ten 410 mm (16.1 in) guns and bring Japan closer to its goal of an "Eight-four" fleet (eight battleships and four battlecruisers). Only ships that wear launched and completed between 1905 to 1946. the Tosa hull was finished and launched, but was not loaded out with weapons ect. The 3rd Year Type guns had a maximum range of 19,750 meters (21,600 yd) at an elevation of +35 degrees. Stricken on 1 April 1924, the ship—with her hull virtually finished—was designated for use in testing the effectiveness of shells and torpedoes against its armor arrangements. Tosa-class battleship would there be any real advantage in a Tosa class over a Nagato class? Kaga was originally laid down as a Tosa-class battleship in 1921 but was set to be scrapped after the Washington Naval Treaty limited the number of battleships signatories could own. These lessons highlighted the need for better protection of the main gun turrets and magazines, as well as thicker deck armor to protect against plunging fire. By 1915, the IJN was halfway to its goal and wanted to order four more dreadnoughts, but the Diet rejected the plan and authorized only the dreadnought Nagato and two battlecruisers in the 1916 budget. Tosa-class battleship number one – Tosa. Behind the torpedo bulge and the splinter bulkhead was another splinter bulkhead 12.7–19 mm thick. [4][9] Under the terms of the treaty, construction of Tosa and Kaga was formally canceled on 5 May 1922. Note: This is the introductory article for a series of 8 articles on the classes of battleships built or planned by the major powers following the expiration of the Second London Naval Treaty. [17], The second and fifth test charges (8 and 13 June) were both placed near the fore main battery magazines. The N3 class, never-built battleships of the Royal Navy are today's subject. Construction work on the KAGA is ordered halted. Akagi ' s career as an aircraft carrier. Work stopped on the two Tosa-class battleships on 5 February 1922. They would have been 231.65 meters (760.0 ft) long at the waterline, and 234.09 meters (768.0 ft) overall; the ships would have had a beam of 30.48 meters (100.0 ft) and a draft of 9.39 meters (30.8 ft). Test three allowed in the most water of all the tests and, as a result, the list was altered from a previous port-side 2° 51' to a starboard-side 5° 22'—a change of 8° 13'. Both of the ships were scheduled to be scrapped. Conversely, the IJN took measures to defend against shells of this type when reconstructing its existing battleships during the 1930s, as well as in the designs of the Yamato-class battleships and the heavy cruisers of the Mogami and Tone classes. However, after the Washington Naval Conference and the signing of the Washington Naval Treaty, all work on the ship was halted. Epitaph Level 47: Master Sailor. [3], The IJN began reevaluating the Nagato design in light of lessons learned from the Battle of Jutland in May 1916, experiments evaluating armor protection, and newly acquired information on the protective schemes of British and American capital ships. He estimated that his ship would displace as much as Nagato, although it would cost about a million yen more. [25] Tosa was the tenth and final Japanese capital ship sunk or scrapped to comply with the naval treaty's stipulations. Built as an improvement to the Nagato-class, I was to serve as part of the Eight-Eight Fleet Program. To increase the ship's protection he proposed to angle the belt armor outwards to improve its resistance to horizontal fire, and to thicken the lower deck armor and the torpedo bulkhead. With twice the armor weight and nearly the same speed as the Nagatos, this … 1922. Tosa (土佐) was a planned battleship of the Imperial Japanese Navy. IJN Kaga - Tosa-Class Battleship (1940s Modernisation) An alternate modernisation of Kaga as a battleship - featuring a different AA setup, new main gun turrets and a rearranged stern. The ten 20 cm (7.9 in) guns, although now all mounted singly in casemates, were retained. [7] A turbo-electric propulsion system was considered for these ships after the United States announced that the system was a great success in the battleship USS New Mexico, and the Japanese estimated that a 70,000-shaft-horsepower (52,000 kW) turbo-electric plant could be installed in the Tosa class, which would have given the ships a speed of 25.25 knots (46.76 km/h; 29.06 mph), a 2,500-nautical-mile (4,600 km; 2,900 mi) range at full speed, and a 7,800-nautical-mile (14,400 km; 9,000 mi) range at 14 knots (26 km/h; 16 mph), but this system was rejected. [4][5] Fitting-out commenced soon after with a projected completion date of July 1922. Kaga-class Battleship was successor of Nagato-class Battleship. Posts about tosa class written by padresteve. Tosa-class Battleship (1944) by ijnfleetadmiral on DeviantArt DeviantArt is the world's largest online social community for artists and art enthusiasts, allowing people … were two dreadnoughts ordered as part of the "Eight-Eight" fleet for the Imperial Japanese Navy (IJN) during the early 1920s. Tosa-class battleship: Displacement: 39,900 long tons (40,540 t) 44,200 long tons (44,909 t) Length: 234.1 m (768 ft 1 in) Beam: 30.5 m (100 ft 1 in) Draught: 9.4 m (30 ft 10 in) Installed power: 12 × water-tube boilers; 91,000 shp (67,859 kW) Propulsion: 4 shafts; 4 × steam turbines: Speed: 26.5 knots (49.1 km/h; 30.5 mph) Range: Akagi ' s career as an aircraft carrier. Tosa Class Super Dreadnought Battleship 2016-10-27. Compare to Nagato-class, Kaga had more modernized armor scheme and improved weapons. Test four went from a starboard 1° 0' to a port 5° 20'. Explosive "mines" were embarked: two 360 mm (14.2 in) shells were placed inside Tosa's double bottom, and two containers with 30 kg (66 lb) of Shimose powder in each were put into the engine room on the port side. Carrier doctrine was still evolving at this time and the impracticability of carriers engaging in gun duels had not yet been realized. In Roberts, John. No work took place until 1925 as new plans were drafted and earthquake damage to the Yokosuka Naval Arsenal was repaired. [6], The Tosa-class ships had a planned displacement of 39,900 t (39,300 long tons), and 44,200 t (43,500 long tons) at a full load. The Amagi class (天城型, Amagi-gata) was a series of four battlecruisers planned for the Imperial Japanese Navy (IJN) as part of the Eight-eight fleet in the early 1920s. [13] The guns were normally supplied with 250 rounds each, although space was available for a total of 400 rounds per gun. The Tosa-class battleships (土佐型戦艦) were two dreadnoughts ordered as part of the "Eight-Eight" fleet for the Imperial Japanese Navy (IJN) during the early 1920s. In the latter, this meant that the side belt armor was continued below the waterline and beneath the torpedo bulge so that the class would have a defense against underwater shells. Both broached the side protection system—allowing 1,008 and 726 long tons (1,024 and 738 t) of water, respectively, to enter the ship—showing that the usual three-compartment, all-void system used in most Japanese battleships was an insufficient defense against modern torpedoes. [6][9] However, work on Tosa was halted on 5 February 1922, one day before Japan signed the Washington Naval Treaty. With twice the armor weight and nearly the same speed as the Nagatos, this design was approved and named the Tosa-class. Japanese battleship Nagato. Construction of both ships began in 1920, but the 1922 Washington Naval Treaty intervened, mandating the cancellation of all capital ships being built. This reduction in her displacement increased her speed to 27.5 knots (50.9 km/h; 31.6 mph) and gave her a range of 8,000 nautical miles (15,000 km; 9,200 mi) at 14 knots (26 km/h; 16 mph). [14] The main battery turrets and the portions of the barbettes above the main deck would have had between 229 and 305 mm (9.0 and 12.0 in) of armor plating,[8] and the conning tower walls would have had armor 254 and 356 mm (10.0 and 14.0 in) thick and a roof of 178 mm (7.0 in) armor plates. Engineering blueprints for the two ships were completed by Japanese naval engineers in 1919. The construction of the two Amagi-class battlecruisers for the Eight-Eight fleet program, Amagi and Akagi, were also halted under the terms of the treaty. 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