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Ship launching

  1. Jan 15, 2008 #1
    Hi!

    I saw from youtube clips that dry dock ship launching use these wooden(?) contraptions. Do they cause damage to the paint coat of the ships?

    Thanks
     
  2. jcsd
  3. Jan 15, 2008 #2

    mgb_phys

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    No thats why you use wood.
    The boats don't generally slide on the wood, the sit on cradles that slide on greased rails.
     
  4. Jan 16, 2008 #3
    So you are saying that there is not a slightest damage to the coating in all cases?

    Thanks
     
  5. Jan 16, 2008 #4

    Integral

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    What do you propose that they use to cause LESS damage?
     
  6. Jan 16, 2008 #5
    Perhaps we could use a material with low coefficient of friction as a material for the ramp, as described by Mr./Mdm mgb_phys. Eliminate also, altogether, the use of grease.
    Fundamentally, I just would like to know if existing methods scratch the paintwork.

    Thanks
     
  7. Jan 16, 2008 #6

    RonL

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    It's been over 30 years, but when i had some involvement with boat building(intracoastal, and river pushboats) the below waterline coatings, were mixes of paints and resins, and some flourlike metals, that had to be continually stirred with a air motor while in the paintpot.
    These finishes, when cured, were as hard or harder than the metal they covered.

    Not sure but i would think that finishes today might be even better.
     
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