Extraneous
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[4337 Ryujo] .B Engine(s) output: 66,270 hp .B Top Speed: 29 knots .B Main armament: 8 x 5-inch (127mm), 22 x 25mm guns .B Aircraft: 48 (Operational Maximum 37) .B Displacement (full load): 13,650 tons .B Thickest armour: Light plating only .P By 1929, the Imperial Japanese Navy (IJN) had three aircraft carriers completed: Akagi, Kaga and the experimental Hosho. Under the terms of the 1922 Washington Naval Treaty this left just 30,000 tons available for further aircraft carrier construction. .P The IJN's desire for three more carriers meant that they would need to cram a lot of carrier onto a very limited displacement, and what followed next was perhaps predictably, a rather unsuccessful design. .P The brief for Ryujo was to use just 8,000 tons of the remaining allowance and yet achieve a fast, aircraft carrier that was capable of carrying forty-eight aircraft. The result was a ship that was highly unstable, and Ryujo required much work after completion to rectify this inherent instability. .P Her original design allowed for just a single hangar, but the desire for forty -eight aircraft meant that a second hangar was belatedly built into the design; adding greatly to the stability problems mentioned above. .P Ryujo's hangars were served by two lifts, although one of the lifts was sufficiently small so as to make it practically unusable. In keeping with standard practice, no catapult was fitted to assist take-off, but six arrester wires were available to bring her aircraft down safely. Operationally, the designed number of aircraft proved too much to handle, and thirty-seven aircraft was considered optimal. .P Defensive armament was to have been six twin 5-inch anti-aircraft (AA) guns, but this was reduced to four due to the need to reduce top weight. Close-range AA weaponry came courtesy of twenty-two 25mm guns. .P Ryujo had no island structure; the bridge being sited below the forward edge of the flight deck. At the time of her completion she had sufficient top speed to operate with IJN's battlefleet, but by the time of the Second World War, 29 knots had become inadequate for a frontline carrier. .P Armoured protection was negligible; just light plating being fitted to protect the machinery and magazine spaces. .P Ryujo means Prancing Dragon in English. .P At the outbreak of war in December 1941 Ryujo was part of the 4th Carrier Division (CarDiv). Operating from Palau, she was a key component in the Japanese attack on the Philippines (see Amphibious Counter 4435 and Transport Counter 4443). The opening moves of this operation began on the first day of the Pacific War, and Ryujo's aircraft launched an air strike against Davao that day. Later that month Ryujo was part of the covering force for the landings by the 15th and 16th Infantry Divisions at Davao, on the large Philippine island of Mindanao. .P On the 22nd December Ryujo took part in the invasion of Jolo, a small island halfway between Mindanao and Sarawak. Ryujo was part of the escorting force for the nine transports that carried men of the 56th Brigade to the island, which was important as the Japanese intended to use it to base their 23rd Naval Air Flotilla for the assault on the Dutch East Indies. .P With the initial landings on the Philippines having been successfully undertaken, the Japanese sought to finish off the British and Commonwealth forces in Malaya and Singapore. To aid this operation, Ryujo was deployed in the South China Sea as part of a covering force protecting the supply convoys to Thailand and Malaya. Just about everything at this stage of the war went smoothly for the Japanese and their opponents were falling back everywhere in the face of such determined opposition. Neither the Philippines nor Malaya were secured before the Japanese started to look further south; the oil resources of the Dutch East Indies (NEI). .P The invasion of the NEI had begun in the eastern islands of the Dutch colony in December. By the middle of February 1942, the Japanese turned their attention to the large island of Sumatra, located west of the Malayan peninsular. The first target was Palembang, on the southeast coast. An invasion convoy set out from Camranh Bay on the 9th February (see Transport Counter 4447). Ryujo was part of the covering force for this convoy. As the invasion fleet approached Sumatra, they came across Allied evacuation convoys and Ryujo's aircraft were used alongside land based bombers to attack the Allied shipping. Many Allied vessels were sunk or damaged during these actions. .P In a vain attempt to stop the Japanese invasion of Sumatra the Allies despatched a cruiser and destroyer force to intercept the Japanese fleet, but once again Ryujo's aircraft were extensively used to beat off the Allied ships. Having found the enemy on the morning of the 14th, Ryujo again launched her aircraft to attack the Allied ships. Although no Allied warships were sunk in this engagement, the intensity of the air attacks forced the Allied vessels to withdraw. .P For the invasion of Java, at the end of February 1942, the Japanese used two invasion forces. Ryujo provided air cover to the Western Force that was responsible for landing troops east and west of Batavia, the capital (see Amphibious Counter 4439). On the 1st March, her aircraft were used to sink the American destroyer USS Pope. Destroyers USS Pope and HMS Encounter had been escorting the damaged heavy cruiser HMS Exeter when the British ships were sunk at the Second battle of the Java Sea (see Myoko). .P After the operations against Java, Ryujo was deployed with the Malay Force to provide air cover for the invasion of northern Sumatra on the 12th March. She then provided cover for the operation to reinforce units in Burma and for the assault against the Andaman Islands two weeks later (see Kashii). .P During early April, the IJN launched a raid in the Indian Ocean using five of the six carriers of the 1st Air Fleet. The intention was to destroy the Royal Navy's Eastern Fleet at anchor in Colombo, but the main portion of that fleet was hundreds of miles to the west and the raid had only limited effect. Ryujo was part of Second Fleet for this operation and she led attacks on enemy shipping in the Bay of Bengal (see Hiryu). .P Ryujo's next operation was AL, the attack on the Aleutian Islands in the Northern Pacific. For this operation, that was timed to coincide with the attack on Midway Island at the start of June 1942, she was part of the Second Carrier Striking Force, commanded by Rear-Admiral Kakuji Kakuta. Although the Japanese occupied the Aleutian islands of Attu and Kiska, the operation proved nothing more than an unnecessary dilution of resources from the main task at hand; the destruction of the American carrier fleet, and at Midway the IJN was to lose four of their fleet carriers (see ASW Carrier Counter 4430). .P After the reverse at Midway, the IJN was reorganised. The 3rd Fleet, which now contained the main carrier force, was placed under the command of Vice-Admiral Chuichi Nagumo and consisted of the 1st Carrier Squadron: Shokaku, Zuikaku and Zuiho; the 2nd Carrier Squadron: Junyo, Hiyo and Ryujo; the battleships Hiei and Kirishima; the heavy cruisers Chikuma, Kumano, Suzuya and Tone; the light cruiser Nagara and the 10th Destroyer Flotilla. .P On the 7th August the Americans invaded the island of Guadalcanal in the Solomons chain. Apart from a naval victory at Savo Island (see Kako) the Japanese response to the invasion was poor. They underestimated the strength of the American presence on the island. They were also wrong about how quickly the Americans could get an airstrip, one that the Japanese had themselves almost completed prior to the invasion, finished and in working order. As a consequence, by mid-August, the Americans had established themselves on the island and had air superiority in the local area. By day, the waters around Guadalcanal were a no-go area to the Japanese. But the recognition of this American air superiority only came about as a result of the Battle of the Eastern Solomons, fought on the 24th August 1942, largely as a result of a Japanese attempt to get a substantial troop convoy to Guadalcanal. .P The convoy set out from Truk on the 16th August carrying 1,500 men and their supplies aboard three transports. The light cruiser Jintsu, flagship of Rear-Admiral Raizo Tanaka, and ten destroyers escorted them. .P Knowing that there were a number of American carriers operating southeast of the Solomons, Admiral Isoroku Yamamoto, Commander of the Combined Fleet, still desperately hoped for the "decisive battle" that would win the war for the Japanese. He agreed to deploy a large number of warships in the Eastern Solomons, centred around the fleet carriers Zuikaku and Shokaku, in the hope of fighting such a battle. He was in theory also responsible for the safety of Tanaka's convoy, although in practice, this element of the operation was very low priority. .P The forces deployed were: Third Fleet's Main Body consisting of the carriers Shokaku (flagship of Vice-Admiral Chuichi Nagumo), Zuikaku, and ten destroyers. Operating ahead of the carriers was the Vanguard Force under Rear-Admiral Hiroaki Abe aboard the battleship Hiei with sister ship Kirishima; the heavy cruisers Kumano, Suzuya and Chikuma; and four destroyers. To guard against a threat to Nagumo's carriers from the east, the Second Fleet, commanded by Vice-Admiral Nobutake Kondo, was deployed on the left flank of the Main Body. Kondo had the heavy cruisers Atago, Haguro, Maya, Myoko and Takao; the light cruiser Yura, the Seaplane carrier Chitose and six destroyers to hand. Last but not least, to protect Tanaka's convoy, the IJN deployed the Detached Carrier Striking Force, commanded by Rear-Admiral Chuichi Hara. Hara had just Ryujo, the heavy cruiser Tone and two destroyers for this purpose. Ryujo was equipped with twenty-four Zero fighters and nine Kate torpedo-bombers. .P For once, the American intelligence network failed them and they had no idea of the whereabouts of Nagumo's carriers as they entered the Eastern Solomons. The failure to locate the carriers led to a potentially disastrous decision; thinking they must still be at anchor in Truk, Rear-Admiral Frank Fletcher allowed one of his three carriers to leave the Solomons for refuelling. This meant that when the battle came, the US Navy would actually have around twenty fewer carrier aircraft available. Fletcher's force for the Battle of the Eastern Solomons was as follows: the carriers Enterprise and Saratoga, the battleship North Carolina, the heavy cruisers Minneapolis, New Orleans and Portland, the light cruiser Atlanta and eleven destroyers. .P Generally poor weather in the region meant that it was not until late in the afternoon of the 23rd August that Tanaka's convoy was sighted by American patrol planes. This poor weather came to the Japanese aid as aircraft flown from Saratoga failed to locate the convoy and had to return to the airfield at Guadalcanal. .P Early on the morning of the 24th both sides launched search aircraft, while Saratoga's aircraft returned to the carrier after their enforced overnight stay on Guadalcanal. The Americans found three of the Japanese forces, although Nagumo's carrier force was not spotted. The Japanese reconnaissance planes on the other hand were completely unsuccessful. .P However, it was only in the early afternoon that Fletcher ordered an air strike against Ryujo as he waited for further proof that Japanese flat-tops really were in the area. It was only after the order was given and aircraft were on their way to Ryujo that Fletcher then received reports that Zuikaku and Shokaku were in the Eastern Solomnons. .P At around 1520hrs aircraft from Saratoga found Ryujo. With only limited fighter cover, and few ships around her to mount an adequate AA defence, Ryujo was doomed. Numerous bomb and torpedo hits ensured there was no chance of saving the carrier and she was later to sink along with 120 of her officers and crew. By the time of the attack, Ryujo had already launched twenty-one aircraft to attack the airstrip on Guadalcanal. This operation, designed to try and keep the American island-based planes from attacking Tanaka's convoy, caused little damage however. By the time the surviving aircraft returned to where Ryujo had once been, there was no choice available to the pilots other than to ditch in the sea. .P While Ryujo fought her doomed battle for survival, the Japanese had at last found Enterprise. From the decks of the two fleet carriers two waves of aircraft were launched; the first numbering thirty-seven and the second thirty-six. The Japanese attackers were picked up by the enemy's radar and fifty-three Wildcat fighters were put into the sky to meet them. Still twenty miles from the carriers, a fierce battle ensued as the Americans sought to beat off the attacking aircraft before they could reach the ships. Many of the Japanese attackers got through and launched strikes on Enterprise and North Carolina, but no attacks were launched against Saratoga as so many Japanese aircraft were shot down before even reaching the American ships. Enterprise was hit by three bombs and was badly damaged. However, excellent work by her crew meant that she was never in danger of being sunk and she would live to fight another day. North Carolina suffered just one near miss and was only lightly damaged in the attack. .P The Americans, having sunk one carrier and inflicted the loss of seventy-five aircraft of all types on the IJN and Army air forces, withdrew that evening after launching one more attack on the Japanese warships. Little damage was done, however there was to be more agony in store for Japanese the next day. .P Not realising they had failed to neutralize American airpower on Guadalcanal the day before, and thinking the battle had been more successful than it actually was, Tanaka continued south toward Guadalcanal with his convoy. Early on the morning of the 25th an American patrol plane spotted the Japanese ships and Wildcats and Dauntless dive-bombers were sent to intercept. The first target was Tanaka's flagship, Jintsu, which was hit twice by bombs. Tanaka switched his flag to the destroyer Kagero and ordered Jintsu to sail north to safety. The transport Kinryu Maru was the next victim, and she was set ablaze by a single bomb. The destroyer Mutsuki went to her assistance but in so doing became a target for an attack by a B-17 bomber later that morning. A single bomb struck her engine room and she sank with the loss of 40 men. After fellow destroyer Mochizuki had picked up survivors from the two ships Kinryu Maru was scuttled. The remaining transports and their escorts retreated north; the reinforcements so desperately needed on Guadalcanal would not be delivered this time around, and Japanese attempts to get troops to the island would grow ever more desperate in the months to come (see Jintsu). April 10, 1941 ~ Flagship of 4th Carrier Division, 1st Air Fleet Defensive armament was to have been been six twin 5-inch anti-aircraft (AA) guns, but this was reduced to four due to the need to reduce top weight. Close-range AA weaponry came courtesy of twenty-two 25mm guns. Wikipedia Armament: 8 × 127 mm (5 in) guns, 4 × 25 mm anti-aircraft guns, 24 × 13 mm machine guns Nihon Kaigun (Combined Fleet) Armament: 8 x 5"/40 4 x 25mm/60 24 x 13mm/76 World War II Database Armament: 8x100mm 4x25mm 24x13mm My Post#: 592 CVL Ryûjô ("Prancing Dragon") (1933-1942) ex-tender Taigei Displacement: 12,732 tons Dimensions: 167 x 20.32 x 5.56 meters. Propulsion: Steam turbines, 6 boilers, 2 shafts, 65,000 hp (48.5 MW) Speed: 29 knots (54 km/h) Range: 10,000 nautical miles at 14 knots (19,000 km at 26 km/h) Complement: 924. Armament: 8 x 5 inch (127mm) AA guns (in dual mounts), 4 x 25mm AA guns, 24 x 13mm AA guns. Aircraft: 38 Ryûjô was laid down in 1929, launched in 1931 and commissioned in 1933. She first saw action in the Second Sino-Japanese War supporting land operations of the Japanese Army in China. Where her aircraft complement consisted of 27 aircraft. During World War II, she was the flagship of Carrier Division 4. In 1941 she supported several landings in the Philippines. In 1942 she supported the conquest of Malaya and attacked the Allied forces around Java. She was part of the Indian Ocean raid during April her and her escort were credited with the sinking of 23 merchant ships. She was part of the Northern Force that attached the Aleutians where one of her Mutsubishi A6M Zero's crashed. The intelligence gained from this crash helped the United States to develop the F6F Hellcat. During the Battle of the Eastern Solomon’s she was sunk by U.S. carrier aircraft with a loss of 120 of the crew.
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University of Science Music and Culture (USMC) class of 71 and 72 ~ Extraneous (AKA Mziln)
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