floating lock

Discussion in 'English Only' started by Jeepster, Jul 5, 2018.

  1. Jeepster

    Jeepster Senior Member

    Among the many objects Hageau studied on site in the company of an engineer Don de la Vauterie, those that impressed him most were the great locks in Muiden, a floating lock at Medemblik, a newly-built lock near Den Helder and the sluices under construction in the dunes at Katwijk

    Karel Davids, Larry Stewart. The Rise and Decline of Dutch Technological Leadership: Technology, Economy and Culture in the Netherlands, 1350-1800 (History of Science and Medicine Library)

    what is floating lock ??
    google came out useless ((
  2. The Newt

    The Newt Senior Member

    USA / EEUU
    English - US
    A lock is a kind of gate to control water levels on a river or canal; this one is apparently not permanently fixed to the shore. I don't know how the engineering works.
  3. Uncle Jack

    Uncle Jack Senior Member

    Cumbria, UK
    British English
    I expect it is a caisson; a hollow, watertight and airtight lock gate which is filled with water to lower it into position, so the water behind can then be drained or pumped out. When you want to remove it, the chamber behind is filled with water and then the water in the caisson is pumped out so the caisson floats free. They are often used as the gate for a dry dock but I don't know if they are used in ordinary waterways or harbour entrances.
  4. Jeepster

    Jeepster Senior Member

    Yes, but be this a regular term to name this device, there would certianly be some trail in the internet? Could yousuppose a typo or messing up?
  5. Jeepster

    Jeepster Senior Member

    Could be.. But why no trace of the term??
  6. Uncle Jack

    Uncle Jack Senior Member

    Cumbria, UK
    British English
    I cannot tell. It looks like it is a direct translation of Hageau's account of the visits. There are therefore several opportunities for mistranslation: Hageau might not have known the correct term for what he saw, or he could have misinterpreted what Don de la Vauterie told him. Also, Davids and Stewart might not have understood Hageau's meaning so used a literal translation instead. If the book has references, there might be a link to the original source.

    There is another possibility for "floating lock", that Hageau might have meant "floating harbour", a harbour where boats are permanently afloat because a lock or lock gate holds the water in the harbour at low tide.
  7. PaulQ

    PaulQ Senior Member

    English - England
    I suspect that this is an early version of "The Falkirk Wheel" (Falkirk Wheel - Wikimapia) in which a vessel sails into a lock, the lock is then lifted/lowered as a whole, water and vessel, to a higher/lower level. As the reference is historic, it is probably similar to "The Anderton Boat Lift" Anderton Boat Lift Visitor Centre | Canal & River Trust

    On the other hand it could be a typo for "floating dock".
    Last edited: Jul 5, 2018
  8. sdgraham

    sdgraham Senior Member

    Oregon, USA
    USA English
    "Floating lock" = lock to float watercraft? Maybe?:rolleyes:

    (The same way that "The Killing Fields" didn't mean that the fields were doing the killing):confused:
  9. Jeepster

    Jeepster Senior Member

    A version! Thank you!
  10. Jeepster

    Jeepster Senior Member

    Thank you! Much interstining
  11. Jeepster

    Jeepster Senior Member

    An important note, thank you!
  12. Andygc

    Andygc Senior Member

    British English
    I doubt very much that this is an early version of a boat lift. Medemblik is at sea level and was one of the principal harbours on what was the Zuiderzee. There are conventional locks between the current external level - the Ijsselmeer - and the canals crossing the polder.

    It seems very likely that this is a mistranslation.

    PS. I've looked at a chart. The inner harbour at Medemblik is locked. I think this suggestion is likely to be correct.
    Last edited: Jul 6, 2018

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