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  1. anonym_Hf93Jbjm9WjT

    Cavalla vs Shokaku, Submarine vs CV

    This is a summary of a video by the well known youtube historian "Thehistoryguy", with decorative flourishes of dubious accuracy added by myself. Be sure to watch the full video, link at the bottom of this topic. Context : 19th-20th June 1944 Battle of the Phillipine Sea https://en.wikipedia.org/wiki/Battle_of_the_Philippine_Sea Japan sent 5 fleet carriers and 4 light carriers, supported additionally by land based aircraft, a host of other warships including 68 destroyers and 28 submarines to deal a decisive, "war winning" blow to American naval power in the Pacific, hoping to force the USA to sue for peace. The target of the Japanese task force : 15 American aircraft carriers, 5 battleships and assorted cruisers, destroyers and submarines. (and you guys complain when there are 2 CVs per side in WOWS!) The battle turned into a disaster for Japan, with catastrophic loss of life, aircraft and warships. More than 600+ planes shot down, for 100+ USN aircraft, nearly 3000 Japanese aviators and sailors died, compared to few more than 100 US navy personnel, 3 IJN fleet carriers sunk, while the USN suffered no losses of warships apart a damaged battleship. Players : Among the fleet carriers deployed by Japan, was the Shokaku, a pre-war purpose built aircraft carrier, which had fought a long and thus far, successful war, that had participated in Pearl Harbour in 1941, sunk HMS Hermes in March 1942 (which we recall as the first purpose designed aircraft carrier), and which would a short time later, once more, in May of the same year, earn the hatred of American sailors by helping to sink USS Lexington in the Battle fo the Coral Sea. Shokaku, or Soaring Crane, laid down in 1937, commissioned in 1941, was a significant threat to the allied forces in the Pacific. https://en.wikipedia.org/wiki/Japanese_aircraft_carrier_Shōkaku Each of the opposing fleets deployed scores of submarines, as scouts to relay information about the enemy back to their respective fleets, and as opportunistic threats to whichever enemy vessels strayed into their lurking sweep/ Among the USN Submarines, was a Gato class, USS Cavalla. Laid down in March 1943, commissioned in November of the same year. Cavalla displaced, surfaced, more than some destroyers, at 1500 long tons, and was quite as, if not more, deadly, which she would prove on her first deployment. Her role, under the command of Herman J. Kossler was that of a scout in the avant-garde of the USN fleet. https://en.wikipedia.org/wiki/USS_Cavalla_(SS-244) https://www.galvestonnavalmuseum.com/uss-cavalla-history.html Submarine vs CV! on the 19th June, USS Cavalla spotted an aircraft carrier in the process of recovering aircraft (which would limit the warships ability to manouvre). Unaware of the Carrier's name, and so of her significance, Cavalla's commander and crew prepared a firing solution through a combination of estimation and their on board analogue computer (no pc or console games installed as far as we know). 6 "fish" were fired, to ensure that at least some hit, and exploded, USS Cavalla dove deep immediately after releasing the torpedos, fully aware the tracks of the torps would be visible to both the enemy carrier and her (numerous) destroyer escorts. This deprived the submarine of immediate confirmation of exactly what happened to her torpedoes. No photographic record exists (or at least, has survived) of what follows, what we know is based upon eye witness accounts of Japanese survivors on board Shokaku, and witnesses on board escorting vessels. One minute after diving, USS Cavalla sonar picked up 3 explosions. 2 minutes later, the Submarine, heard the passage of destroyers over head, and the violent shockwaves of depth charges. More than a thousand depth charges would be dropped in the following hours, until night fell. Apart damage to non vital systems, USS Cavalla escaped unscathed, without casualties/ So what was happening, on the surface? Of the three torpedos that hit Shokaku, one struck her amidships, causing her aviation fuel stores to rupture, explode, and spread fuel and fumes throughout her hangar sections, and later throughout the ship. One of the three torpedoes stuck near the bow, causing severe flooding. Essential systems including pumps were disabled, and so unable to combat flooding, unable to fight spreading fires, her captain, ordered her crew to begin an orderly evacutation "abandon ship but don't panic please". Even as the evacuation was progressing, the aviation fumes which had spread through the lower decks of the ship, finally exploded, the entire Carrier had become a fuel air bomb. She sank, vertically, bow first. More than 1000 sailors perished, 500 surviving sailors were picked out of the water by assisting warships. (note : different online accounts have differing explanations for this final, and terminal, catastrophic explosion. Watch the video for more information.) When night fell, USS Cavalla surfaced to assess the situation and to learn if her attack had fully succeeded, but poor visibility in bad weather prevented her from investigating further. She reported back to fleet, having sucessfully scored three torpedo hits on a Japanese CV., only some time later learning that she had indeed sunk not only a Japanese fleet aircraft carrier, but that she had "avenged" HMS Hermes, Pearl Harbour and USS Lexington, among other casualties of Shokaku's wartime record. Aftermath : While not the only cause of Japan's defeat at the battle of the Phillipine Sea, one 1500 ton submarine had destroyed 20% of Japan's fleet carriers, with a volley of 6 torpedos. USS Cavalla, her commander and crew fought on until the war's end, her Commandnr would remain with the US Navy for a further 40 years, retiring as a much decorated rear Admiral, while USS Cavalla, was finally decommissioned in 1969. I hope the summary will help as an introduction to the video, with the links as useful sources of further information. But they do not replace the very educational, and properly researched, HistoryGuy video. Please do take the time to watch it, or just listen to it as you play WOWS! Disclaimer : I have ulterior motives in posting topics that involve submarines vs CVs, and CVs vs submarines. I apologize if you find this irritating! For the tech heads : http://www.combinedfleet.com/shoksink.htm complex studies involving numbers higher than I can count/