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Japan wants to do away with aip in submarines

Discussion in 'Defence Technology' started by AV, Oct 6, 2014.

  1. AV

    AV Administrator Staff Member

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    Japan has decided to power its new batch of Soryu-class submarines with Lithium-ion batteries instead of air-independent propulsion (AIP) technology — a move that could raise eyebrows after similar types batteries were faulted for fires aboard the Boeing 787 Dreamliner.

    However, experts brush aside those concerns and instead say this type of technological leap increases power and performance, while reducing maintenance. It also could make Japanese subs more marketable overseas.

    Yasushi Kojima, a spokesman for the Maritime Self-Defense Force (MSDF), said the change would affect the next four remaining Soryu-class submarines in Japan’s 10-boat class.


    http://www.defensenews.com/article/...290032/Japan-Make-Major-Switch-Sub-Propulsion
     
    shash2k2 likes this.
  2. shash2k2

    shash2k2 Administrator Staff Member

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    I guess Modi should take initiative and get into partnership with JAPAN for these subs. Japanese defence equipment are world class though they are most underrated once as USA wont allow them to market military equipments.
     
  3. AV

    AV Administrator Staff Member

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    The problem is the cost its almost 3 times the cost of other options available.
     
  4. shash2k2

    shash2k2 Administrator Staff Member

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    Any Link with estimated cost for this project ?
     
  5. AV

    AV Administrator Staff Member

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    Cant find any link , read some time back about the Australians interested in these Japanese subs aswell but cost was a factor they were worried about.
     
  6. shash2k2

    shash2k2 Administrator Staff Member

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  7. shash2k2

    shash2k2 Administrator Staff Member

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    Australia is set to buy new submarines from Japan, which may unsettle relations with China. Picture: ADF Source: Supplied

    AUSTRALIA is set to turn to Japan for its biggest defence contract, the purchase of up to 12 new submarines, a move that threatens to antagonise China and create significant geopolitical consequences for the region.

    The move would be seen by Beijing as a provocative upgrade to Australia’s military relationship with Japan at a time when Tokyo and Beijing are involved in an escalating territorial dispute over islands in the East China Sea.

    Japan is understood to be the frontrunner to build up to 12 large submarines for the Royal Australian Navy after the government decided the cost of building submarines in Australia was too high. The purchase of off-the-shelf submarines from overseas would deal a potentially fatal blow to naval shipbuilding in Australia but would allow the government to avoid costs of between $50 billion and $80bn to build the boats. Purchasing off-the-shelf from Japan would cost about $25bn.

    A decision to buy submarines from Japan would further entrench what Beijing sees as a creeping three-way alliance between the US, Japan and Australia in the Pacific, aimed at containing a growing China.

    The Abbott government believes there would be important strategic benefits in buying submarines from Japan.

    Firstly, a submarine based on Japan’s highly regarded 4000-tonne Soryu-class design would almost certainly be more reliable and more potent than a home-made submarine, given that only about two of the navy’s six Collins-class vessel have been seaworthy on any given day for much of their lives. Secondly, any decision to buy Japanese submarines would greatly upgrade the military relationship with the country Tony Abbott calls Australia’s “best friend in Asia”.

    Importantly, the US has given tacit approval to the notion of Australia purchasing Japanese submarines at a time when China is seeking to expand and upgrade its submarine capability in the Pacific. Admiral Stuart Munsch, the chief US undersea naval officer in Asia, said last month that co-operation between Australia and Japan on submarines was “a national decision for them to make with each other, but we would certainly be welcoming of that partnership”.

    Any submarine built in Japan would almost certainly be fitted with US weapons and US combat systems, further integrating Washington into the Australia-Japan military partnership. The push to buy Japanese submarines has escalated since Mr Abbott and his Japanese counterpart Shinzo Abe signed a deal in July to boost military co-operation, including the transfer of military equipment and technology. The submarine deal is not yet done and events could still derail it.

    Although Japan under Mr Abe is becoming more assertive about its defence posture, it has never exported such a major piece of military equipment. Domestic politics in Japan could still stymie such a deal, while in Australia officials insist that Germany, a proven submarine exporter, is still a potential contender to build an off-the-shelf submarine for Australia.

    In a report to be released today by the Australian Strategic Policy Institute, defence expert Mark Thomson warns that having Australian submarines built in Japan “would be a move laden with geopolitical consequences”.

    “The export of Japanese submarines to Australia would represent a much more rapid normalisation of Japan’s defence posture that anyone has anticipated so far,” Mr Thomson says. “It would alarm China and heighten Beijing’s fears of containment by the United States and its ... allies.

    “Those are serious first-order strategic considerations not to be dismissed lightly or as somehow secondary to the reasons for acquiring submarines in the first place.”

    China is investing heavily in developing a modern submarine force to allow it to project power far from its shores. According to ASPI, China’s total fleet is projected to grow from about 65 boats now to up to 78 by 2020, including as many as three more modern, nuclear attack submarines. Japan has 17 conventionally powered submarines but plans to build its force up to 22 boats by 2020 in response to China’s growing military power.

    Japan last month announced a 3 per cent increase in its defence budget in the face of what it says is the worsening security environment in the region.

    China has engaged in brinkmanship with Japan over its long-standing territorial dispute over the islands known by Japan as the Senkakus northeast of Taiwan.
     
  8. shash2k2

    shash2k2 Administrator Staff Member

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    Here is a contradictory report :

    The June 11 agreement, following extensive talks between Japanese Defense Minister Itsunori Onodera, Foreign Minister Fumio Kishida and their Australian counterparts, Julie Bishop and David Johnston, will see the two countries jointly develop a range of submarine technologies based mainly on Japan’s highly advanced air-independent propulsion (AIP) systems.

    More at ; http://www.defensenews.com/article/...160010/Japan-Australia-Deal-Poses-Tech-Issues
     
  9. PoKeMon

    PoKeMon Administrator Staff Member

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    According to australian strategic policy institute, the estimated cost of 12 soryu class would be around 36 billion dollar i.e. $3 billion each. P75 I project is estimated to cost 12 billion for 6 subs.

    Moreover soryu class is highly advanced in hull strength and noise reduction. It wont be that easy to manufacture them in India. However we can save some money by not asking for ToT rather partial one for maintenance purpose.
     
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  10. AV

    AV Administrator Staff Member

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  11. shash2k2

    shash2k2 Administrator Staff Member

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