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I have no doubts that US has far most advance sonar than all the countries around the world put together. The budget for R&D for sonar is larger than the rest of the world put together. But sometime i do ask myself this question. Assuming US know the exact location of most of the Russian sub, does it has the tool to attack them in short notice or to make sucessful attack? Officially the most commonly use torpedo from ship and ASW helicopter or P-3 aircraft is MK-46, MK-50 and MK-54. Such torpedo is so small. Between 517 to 775 plus pounds. Yet many Russian sub are double hull monster that is between 9000 to 33000 ton and these sub has quite good speed and a comprehensive array of decoy or even anti torpedo torpedo. I have a feeling that those SH-60 seahawk may be able to locate these sub but these sub could also easily destroy seahawk or even P-3 with moderately sophisticated SAM. On the other hand, MK-46 (exist in largest quentity) is only good for attacking slow SSGN and SSBN and diesel sub. It its no escape range is greatly diminish when used against sub that can travel between 30 to 43 kt. Akula could manage 35 to 36 kt and even the huge OScar 2 could manage a respectable 30 to 31 kt. A stern chase from a MK-46 greatly reduce its effective range. PAPA/ALFA could even out run a mk-46. Alright PAPA and ALFA are all decommision. But we could say that there is no effective light weight torpedo from ship and helicopter for most of 1970s and 1980s against ALFA/PAPA. Things only change when MK50 and the latest MK-50 is produce. But thats in the late 1980s and early 1990s. P-3 could easily carry torpedo weighing 2000 pound or more. Why no such torpedo is produce for the 300 plus P-3 in 1970s/1980s ?/ SH-60 could actually carry torpedo as heavy as 1000 pound. Why MK-50 is so small ?? MK-50 and MK-46 has very small warhead. For a huge double hull sub with heavily compartmentalised inner hull eg Typhoon, Oscar 2 and Akula 2, such torpedo probably could not destroy/disable the sub with one hit if it fail to hit critical area like the torpedo room or missile tube or countrol room or nuclear reactor compartment. The same kind be said of stingray from UK. Now I have no doubt that the sharp charge warhead could penetrate even the huge double hull of OScar 2 or Typhoon. But the impact will be weak and the flooding will probably be isolated to a few compartment. The HOLES of the damage will not be too big. The sub could still move on. What can a 100 pound PBNX or sharp charge do ? At most equal to the damage power of 150-200 pound of TNT. If Typhoon is in low pressure shallow water, it could probably survive a direct hit from MK-50 if it is not hit at places which contain fuel or ammo. By the way a PAPA has a very good change of out running a stern chasing MK-46 (45kt max). For Mk-46 to successfully destroy a PAPA or ALFA from a stern chase, MK-46 must be launch at least 80 meter away from a PAPA (44.7kt max) or 534 meter away from a ALFA (43kt max). When used againt a 30kt victor, MK-46 must be launch within 4000m away from it. While a SH-60 must really get very close to a ALFA to kill it, it is so easy to launch a SAM againt a target that is less than 1 km away and flying at such low altitude !!!!!! US build many destroyers, especially the Spraunce class in 1970s and 80s. But this highly sophisticated ASW destroyer with its superior electronics only has very TINY and SMALL torpedo. Its either the mk-46 launch from its tiny 2x3 tube or the old ASROC which has range 28km. Assuming the SH-60 LAMp is destroyed, the huge 6000 ton destroyer could only destroy a Oscar or Victor when it is within 28 to 32km away. BUT a Oscar could destroy a Spruance at 500km max using one of its 7 ton S-N-19 SHIPWRECK. Okay most of you may say OScar cannot acquire spruance at such long range. But i reckon that a Backfire performing reconnaissance coul easily past the target info to a Oscar. A Oscar could probably accurately destroy any US destroyer at 100 km away (FAR AWAY from asroc). Without he LAMP heli, US destroyer simply dun have long range ASW weapon. EVEN the cancelled SEA LANCE could only deliver a MK50 to 65km and a nuclear depth charge to 180km. Compare this to a SAND BOX or SHPWRECK missile which has range between 400-600km, its nothing. Even LAMP dun have much endurance beyond 300km. Its far more easy to detect a non stealthy surface ship than a submarine (a moderately quite one). Satellite or Recon aircraft could easily detect destroyer that is not escorted by aircraft carrier aircraft. Such info can be past to OSCAR at shallow water patrol and OSCAR could comfortably launch 24 very high speed RAMJET SS-N-19 and over whelm the meagre AAW capability of many 1980s US destroyer or frigate operating independently without the AEGIS protection. One hit from the giant SHIPWRECK missile and you are sure gone. 7 ton, thats 13 times the size or harpoon. The kinetic energy from a MACH 2.5 7 ton missile alone will kill weven without t

упомянутые Вами закрыты за бесперспективностью. На вооружении их нет нигде в мире. Сам читал закрытый отчет по НИР лет 20 назад,обннаружение по тепловому следу. НИР была закрыта уже тогда

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