Notices
Results 1 to 7 of 7
Like Tree1Likes
  • 1 Post By Ken Fabos

Thread: Do Boat Racers Cover the Surface of the Hull With Any Compound?

  1. #1 Do Boat Racers Cover the Surface of the Hull With Any Compound? 
    Forum Freshman
    Join Date
    Aug 2013
    Posts
    6
    In boat racing a huge reason they can reach such intense speeds is due to limiting the friction between the boat and the water but do they coat the part of the hull that touches the water with anything to reduce friction even more? Perhaps something hydrophobic?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Radioactive Isotope cosmictraveler's Avatar
    Join Date
    May 2005
    Location
    Key West, Florida, Earth
    Posts
    4,789
    Every type of boat uses something different. Here is the Americas Cup boat and how it gets out of the water to reduce drag.



    When the power of love overcomes the love of power the world will know peace.
    Jimi Hendrix
    Reply With Quote  
     

  4. #3  
    Theatre Whore babe's Avatar
    Join Date
    Jun 2013
    Location
    Resident of Big Island of Hawai'i since 2003, and in Bayside, Ca. since 1981, Humboldt since 1977
    Posts
    12,440
    Quote Originally Posted by cosmictraveler View Post
    Every type of boat uses something different. Here is the Americas Cup boat and how it gets out of the water to reduce drag.

    Currently in San Francisco!! SO COOL!

    I will be down there as of tomorrow, not to see that but to a Giants Game, see my mother, golf game and see my eye surgeon., Maybe catch some of it!
    Reply With Quote  
     

  5. #4  
    exchemist
    Join Date
    May 2013
    Location
    London
    Posts
    2,527
    Quote Originally Posted by Mobius Stripper View Post
    In boat racing a huge reason they can reach such intense speeds is due to limiting the friction between the boat and the water but do they coat the part of the hull that touches the water with anything to reduce friction even more? Perhaps something hydrophobic?
    I can only really speak for competitive rowing, where I do know someone produced a PTFE-coated shell years ago, which reduced skin friction dramatically. It was banned, as its cost would have wrecked the sport. The same was true of a racing boat in which the riggers slid, rather than the seat - banned for similar reasons.

    Also, I am aware from dinghy sailing that even slight modifications to boats may be ruled illegal for racing, as they confer an advantage deemed to be unfair. The top end of ocean racing my be different as this is a rich person's indulgence in any case.

    But in principle I am quite sure that you are right: a hydrophobic coating can reduce skin friction - the PTFE experiment proved that.
    Reply With Quote  
     

  6. #5  
    Theatre Whore babe's Avatar
    Join Date
    Jun 2013
    Location
    Resident of Big Island of Hawai'i since 2003, and in Bayside, Ca. since 1981, Humboldt since 1977
    Posts
    12,440
    Think bikini wax, or why swimmers shave their bodies....
    Reply With Quote  
     

  7. #6  
    Forum Radioactive Isotope cosmictraveler's Avatar
    Join Date
    May 2005
    Location
    Key West, Florida, Earth
    Posts
    4,789
    There's also a "bubble" methold for other boats that can use a device to create "bubbles".

    DRAG REDUCTION VIA MICRO BUBBLES LUBRICATION
    When the power of love overcomes the love of power the world will know peace.
    Jimi Hendrix
    Reply With Quote  
     

  8. #7  
    Forum Masters Degree
    Join Date
    Jul 2010
    Location
    Australia
    Posts
    718
    My father was a competitive sailor and for a while it was common to wipe detergent over the hull in the hope of reducing drag; I'm not sure if that was evidence based or wishful thinking. I don't think he kept doing it; I expect someone in a marine tech lab tried and tested various coatings for drag and my father - keen as he was - would have kept using it if there were evidence it worked. It was only ever a thin film which would not have lasted a whole race and I'm not sure about the environmental consequences of hundreds of boats all with detergent on them either. I expect that there has been ongoing research into drag and it may be that - like with golf balls and air resistance - it's as much about micro-texture on the surface as the actual material.
    Last edited by Ken Fabos; August 21st, 2013 at 08:57 PM.
    babe likes this.
    Reply With Quote  
     

Similar Threads

  1. Taxpayer Welfare Supports Boat People.
    By westwind in forum Politics
    Replies: 3
    Last Post: July 6th, 2012, 12:21 AM
  2. Non powered boat move upstream
    By spinner1 in forum Physics
    Replies: 8
    Last Post: March 10th, 2012, 09:50 PM
  3. Boat Floats Using Recycled Soda Bottles
    By HectorDecimal in forum Mechanical, Structural and Chemical Engineering
    Replies: 3
    Last Post: March 6th, 2012, 02:53 PM
  4. Row Your Boat Gently.
    By Vexer in forum Philosophy
    Replies: 16
    Last Post: March 7th, 2009, 11:49 PM
  5. boat on a river, boat on a lake
    By M in forum Physics
    Replies: 4
    Last Post: October 4th, 2006, 07:27 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •