The first South Korean submarine type KSS-3 with VNEU began sea trials

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The South Korean concern Daewoo Shipbuilding and Marine Engineering has begun running trials of the country's first KSS-3-type submarine (SSK) built in the country.





The diesel electric submarine was named Dosan Ahn Chang-ho in honor of independence fighter An Chan. During the designated testing are carried out mainly tests of the propulsion systems and steering equipment.

"An Chanho" is the first of three KSS-3 class submarines ordered for the Republic of Korea Navy. The submarine was laid in May 2016 of the year, the solemn launching took place in September 2018 of the year.

The submarine has a length of 83,5 m, width of 7,7 m, displacement in a submerged position is approximately 3 800 tons. The power plant, represented by VNEU (air-independent power plant), provides maximum speed in 20 knots under water and 11 knots in surface position. The range is about 18500 km at a speed of 8 nodes.

The submarine is equipped with eight 533 mm launchers that are capable of adopting an improved version of the heavy-weight Baek Sang Eo (White Shark) torpedo from the local company LIG NEX, and six vertical launchers that are able to fire cruise missiles such as Cheong Ryong.

In the 1993 - 2001, the local Navy received 9 German-made 209 (KSS-1) type submarines, followed by an application for 9 units. 214 class (KSS-2), which already had VNEU, subject to their construction on their own facilities. They were delivered in 2007 - 2018's.
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    1. -5
      17 June 2019 15: 54
      The test boat ... It only seems to me that power plants of the VNEU are used by those countries that DO NOT HAVE to make nuclear reactors with the necessary parameters. Anyway, these boats are inferior to nuclear powered ships ...
      1. +11
        17 June 2019 15: 58
        Quote: Mountain Shooter
        Anyway, these boats are inferior to nuclear powered ships ...

        On the other hand, they gain in production speed, low noise and use where nuclear-powered vessels cannot enter in their mass-dimensional parameters. At the same time, they can operate even where nuclear-powered vessels graze. Plus - the number of crew members. On a submarine with a VNEU, two crews can be trained with the same number from one to a submarine.
        1. 0
          21 June 2019 01: 03
          Well, if at the expense of the size of the nuclear-powered ships, then if you recall the French "Rubis", then its displacement was 2700, that is, 1000 tons less than this Korean woman. And if you count at what price the "air-independent" are now (France sells 12 Barracudas to Australia for 36,6 billion US dollars), then everything is not so simple.
        2. 0
          13 November 2020 22: 55
          amused. Everything you said is easily parried
      2. +5
        17 June 2019 16: 08
        Quote: Mountain Shooter
        that power plants of VNEU are used by those countries that DO NOT HAVE to do nuclear reactors

        The submarine with YASU and DEPL are completely different boats in everything. Price, size, performance characteristics and, as a consequence, the possibilities and objectives of use.
        1. +3
          17 June 2019 16: 25
          I'm not talking about that. And about the fact that it makes sense to develop nuclear-powered ships, like hybrid vehicles, with a lower-power reactor, powered by a generator, and an electric motor for the main course ... And, with a battery of appropriate power. Full speed can be very fast, and cruising, when the battery is not connected, let 20 knots. And when necessary, "gas to the floor", and all 45! So that the enemy torpedoes do not catch up ...
          1. 0
            18 June 2019 08: 16
            Quote: Mountain Shooter
            Yes, I'm not talking about that. And the fact that it makes sense to develop nuclear-powered ships, like hybrid cars, with a lower-power reactor running on a generator and an electric main drive ...

            And where do you get the noise from running pumps that drive water along the contours of the reactor? even less power.
          2. 0
            13 November 2020 22: 55
            don't compare the submarine with the car
      3. +6
        17 June 2019 17: 47
        Americans like they asked doychev their boat from outside for joint exercises. Then they swore for a long time and made changes to their charters and tactics. Physically, Deutschland’s nuclear-powered boats are not audible at most distances in modern confrontation!
      4. +4
        17 June 2019 18: 44
        Quote: Mountain Shooter
        Anyway, these boats are inferior to nuclear powered ships ...

        But at times cheaper and in construction faster ... yeah. Yes, and with low noise there everything is good. So there are some advantages, too, and very thick.
      5. -1
        18 June 2019 08: 14
        Quote: Mountain Shooter
        The test boat ... It only seems to me that power plants of the VNEU are used by those countries that DO NOT HAVE to make nuclear reactors with the necessary parameters. Anyway, these boats are inferior to nuclear powered ships ...

        It seems to me that boats with VNEU do not build those countries that DO NOT know how to build them. With any parameters. Like it or not, I give up dizeluhi boats with VNEU
    2. +12
      17 June 2019 15: 58
      This division of "DEU" ranks fourth (!) In the rating of the world's largest shipbuilding companies. Own VNEU And without foreign investors-customers, and without executions on the square ...
      1. -3
        17 June 2019 16: 19
        And at the same time you have to feed the FOREIGN army.
      2. 0
        13 November 2020 22: 56
        What does the executions have to do with the squares? Does Korea have an opinion? They are servants.
    3. +4
      17 June 2019 15: 58
      The question is, who knows ... having looked at the photo with the submarine, I drew attention to the outer coating of the hull. It doesn't look very much like rubber, and I remembered that there were developments abroad of the coating material, where the dolphin's skin was taken as a basis ... The boat seemed to be covered in leather ... There are some considerations in this regard. I also remember that this "skin" was developed in the USA, I read this article 15-20 years ago (approximately).
      1. +1
        17 June 2019 18: 49
        Quote: viktor_ui
        The question is, who knows ... having looked at the photo with the submarine, I drew attention to the outer coating of the hull. It doesn't look very much like rubber, and I remembered that there were developments abroad of the coating material, where the dolphin's skin was taken as a basis ... The boat seemed to be covered in leather ... There are some considerations in this regard. I also remember that this "skin" was developed in the USA, I read this article 15-20 years ago (approximately).

        As evidenced by the open specialized industry publications, the coating developed by the Central Research Institute will not only absorb the sonar signal (as the current, so-called passive submarine coating materials do), but also neutralize the incoming radiation.

        The active coating containing the electronics will determine the frequency at which the enemy's radar operates, and will trigger its own signal of the same frequency, but in the opposite phase. The development will be universal for all boats and will have to work with advanced computing systems for the submarine fleet.

        The technology for creating an active hydroacoustic coating based on a special fabric material using composites should be developed within three years. The Russian press is already writing that the first samples will appear by the end of 2016. And there is no reason not to believe such reports - Russian scientists involved in military shipbuilding have long been on the verge of just such discoveries! According to Izvestia, the Ministry of Industry and Trade is ready to spend 200 million rubles for the further development of the technology of an active anti-hydrolocation system.

        And further to this ...
        The line was launched on the basis of the Cheboksary Production Association named after Chapaev. New coating with improved acoustic performance is designed for fourth-generation boats.

        The fourth generation submarines in the Russian Navy include the strategic missile carriers of the 955 "Borey" project and the multi-purpose nuclear boats of the 885 "Ash" project.

        “Technical plates (...) compare favorably with Western models in their ability to absorb a wide range of acoustic signals and high operating performance,” said concern general director Sergey Rusakov.

        Anti-hydrolocation coating is a multi-layered rubber coating of the submarine hull designed to absorb acoustic vibrations. This reduces the effectiveness of the active sonars of the enemy.
        1. +1
          18 June 2019 04: 41
          Andrew, thank you for the interesting info drinks
        2. +1
          18 June 2019 08: 21
          Quote: NEXUS
          Anti-hydrolocation coating is a multi-layered rubber coating of the submarine hull designed to absorb acoustic vibrations. This reduces the effectiveness of the active sonars of the enemy.

          You will be surprised, but these rubber plates are not as simple as they seem. It's just that not all of them saw them "live". On the back of this plate there are rows of holes about 1 cm in diameter. But that's not all. The holes are not simple. They end in a cone with a carefully mathematically calculated curvature of the surface. Everything is calculated so that the sound fades out on them.
    4. 0
      17 June 2019 16: 25
      Diesel electric submarine

      air independent power plant

      are these two different news?
      1. The comment was deleted.
      2. +1
        17 June 2019 17: 22
        Apparently, instead of air compressed oxygen cylinders are used as an oxidizer.
        Those. and diesel, and air independent.
        1. 0
          18 June 2019 09: 56
          Quote: Corn
          Apparently, instead of air compressed oxygen cylinders are used as an oxidizer.
          Those. and diesel, and air independent.

          I wonder why stirling did not suit them?
          aren't diesels considered overly noisy?
    5. +1
      17 June 2019 20: 38
      Colleagues, weird, the question is not quite on the topic: where did the standardization of torpedo tubes for 533 mm come from?
      1. +3
        17 June 2019 23: 56
        This is 21 non-Orthodox imperial American inches.

        Yes
        1. 0
          18 June 2019 08: 47
          This is clear. Why 21 inch?))
          1. +1
            18 June 2019 09: 26
            Because our sworn friends thought that 254 mm, 324 mm, 400 mm and 483 mm are already small.

            And we decided that the torpedo would be no less than the others.

            And then we decided that 533 mm was too little and made a 650 mm Kit.

            laughing
    6. -3
      17 June 2019 20: 57
      That's when the float - that's when we'll talk!
    7. 0
      17 June 2019 23: 54
      This case is not the same boat in which the volume of VNEU was replaced with additional lithium batteries, which is why it goes to them for 20 knots under water?

      And on Stirling 20 knots - well, nothing!
    8. 0
      18 June 2019 13: 56
      In Russia, both nuclear powered ships and diesel submarines are accepted. The waters of the Black and Baltic Sea are designed specifically for diesel. And it’s not for nothing that our designers have been developing VNEU for a decade and a half. These submarines have a great future.

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