Floating dock

Discussion in 'Boat Design' started by muthubd14, Apr 11, 2014.

  1. muthubd14
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    muthubd14 Junior Member

    HI.. Can anyone give me a brief idea on floating docks,,.. how is built vessel from land transferred using rails to pontoon deck of flloating dock ..
     
  2. FAST FRED
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    FAST FRED Senior Member

    how is built vessel from land transferred using rails to pontoon deck of flloating dock ..
    Reply With Quote

    On ships the sections of the vessel will be land assembled and crane lowered into the dry dock, where the almost complete sections get assembled into the entire boat .


    This reduces the assembly time in the dry dock allowing more ships to be built per year.
     
  3. muthubd14
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    muthubd14 Junior Member

    Hi,,,, its not about dry dock.. Its about floating dock...
     
  4. TANSL
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    TANSL Senior Member

    The Spanish shipyard "Navantia", Cartagena's factory, has this building system. They build the boat ashore and by rail, transfer it to the floating dock. Once there, the dock is ballasted and the ship floats.
    Maybe you can find more information on their website.
     
  5. septiclecky
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    septiclecky New Member

    A floating dock is used for dry docking ships where there is not enough land for a conventional dry dock. A floating dock has tanks which are flooded to sink it then the ship is manouvered into the dock then the tanks are pumped out to raise the ship out of the water. A floating dock can be towed to any location.

    What you are talking about is a platform lift (which is static) where the ship/submarine is constructed on land then transported by rail to the platform lift where it is lowered into the water.
     
  6. TANSL
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    TANSL Senior Member

    A sincrolift is an entirely different thing to a floating dock.
    As I said in my previous post, there are shipyards building ships on land, transported by car on way to a floating dock, sinking the dock, and the ship is afloat. This has nothing to do with a sincrloift. Both, indeed, do the same operation but sincrolift can not move while the floating dock being towed from one location to another. The mechanisms of each artifact are extremely different.
    It is not about having or not having land to build the boat. They are different systems to raise or to low boats into the water.
     
  7. DCockey
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    DCockey Senior Member

    Bath Iron works assembles ships on land, then transfers the using carriages on rails onto a floating dock. Ballast tanks in the floating dock are emptied or filled as the tide changes and the ship moves onto the float dock so that the floating dock stays level with the shore. The floating dock is moved into deeper water where it ballast tanks are filled and the ship floats off.
    http://www.youtube.com/watch?v=moSkXCUJHjY&list=PLXGtKnk9liMGv6H96BvN0bB-feWEgCgIF
     
  8. Ad Hoc
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    Ad Hoc Naval Architect

    You need to also make sure the dock does not trim too much when the vessel is travelling from the hard standing onto the dock, via rails. Usually the dock has a linkspan at one end, which touches the hard standing....some also have fixed piles for the dock to fix to when the vessel is being transfers from shore to dock to prevent the trim.
     
  9. TANSL
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    TANSL Senior Member

    Naturally, the depth of the dock would also change if measures were not taken to keep. Also avoid the dock separating from the land. The operation is performed very slowly varying many parameters, so that "nothing changes."
     
  10. viking north
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    viking north VINLAND

    Muthubd14 -- are you talking about -- a gangplank( walking ramp) from the land to a floating platform so a person can walk from the land to the boat which is tied to the floating platform. If so they are very common here and I can supply you with a drawing and a couple of photos. I have built many of them --
     
  11. TANSL
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    TANSL Senior Member

    Viking North, yours is a very interesting experience but it has nothing to do with the point raised Muthubd14. Anyway, if you want to attach some drawing, I'll have a look
     
  12. viking north
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    viking north VINLAND

    Tansl -- i wasn't directing my question to you unless you have two forum names. It is obvious that Muthubd14 is challenged with the English language and in his second post #3 he is attempting to further explain his question. Thinking that he might be requesting a simple land to floating platform commonly known as a floating dock for those of us familiar with boating --I asked him so in very basic English. In future when I direct a question specifically to a forum member please be courteous and allow that person to respond before interrupting.
     
  13. TANSL
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    TANSL Senior Member

    viking north, sorry, it was not my intention to bother. If I've seemed you impolite, it is not my fault, I have not done anything wrong. I've only interested in what you were saying. but thought it was a different topic of this thread.
    Muthubd14, both in post # 1 and post # 3 is talking about a floating dock, and even if he has difficulty expressing himself in English, it is clear that a floating dock is not a floating platform and transferring boats by rail , into a floating dock has nothing to do with people who access to a floating platform.
    I think that even people unfamiliar with boats can distinguish between a floating platform and a floating dock. It is my opinion
    Perhaps I am who does not understand anything. My English is not good.
    Anyway, your appliance for people to access their boat had me interested. If you want to show it, thanks.
    Cheers
     
  14. viking north
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    viking north VINLAND

    No big deal -- water under the bridge -- we both had our say, let us do as our ancestors did, break bread, roast dried salt cod and drink heavy dry dark wine :)
    The term floating platform was just a simplification of floating dock verses floating dry dock, my attempt to help him? /her? with the language and description of his request.
     

  15. TANSL
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    TANSL Senior Member

    v n, I agree with you in some things.
    But, a floating dock requires a series of tanks, pipes, pumps, equipment, etc., which do not need a floating platform. This is an unarmed, static, apparatus, while the floating dock is a very dynamic system. If Muthubd14 is able to confuse the two things is because he has a huge, worrying, lack of knowledge. Nothing makes us suspect that this is the case.
     
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