Wheelhouse windscreen design

Discussion in 'Boat Design' started by Steve Gray, Oct 31, 2002.

  1. Steve Gray
    Joined: Oct 2002
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    Location: Weymouth, UK

    Steve Gray Junior Member

    Why do/did wheelhouses on many boats have windscreen angled downwards, towards the deck? E.g. my old Colvic Watson motorsailer, most trawlers and working boats, etc.. I've never had a convincing answer.
  2. Polarity
    Joined: Dec 2001
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    Polarity Senior Member

    Hi Steve

    I always thought it was to eliminate internal reflection of instruments at night
    Any other reasons out there?


    PS Welcome to the forums!
  3. Mike D
    Joined: Sep 2002
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    Mike D Senior Member


    It is better also on bright sunny days. You are usually looking down or straight ahead so the angle of the window is more suitable against refraction and reflection. If there is dirt or salt on the glass it is easier to see through especially when looking through the bottom of the window.

    They take up more space, require a little more power and most people find them aesthetically ugly. So you'll rarely see them on something "flashy" but they are common, as you say, on work-boats and others where the operator makes his living. Also standard on very large commercial ships to allow people in the wheelhouse to see as much deck as possible as well as the reasons already given by Polarity and above.

    Mike D
  4. Steve Gray
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    Steve Gray Junior Member

    Many thanx, guys. And it's not the first time my boat's been referred to as 'not flashy'! ;O)
  5. Inerested
    Joined: Aug 2002
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    Inerested Junior Member

    Another reason that nobody has mentioned is to do with water over the Wheelhouse in large seas. A downward facing windscreen does not have to bear the load of water crashing down on it that an upward facing windscreen has to.
    If the designer of an upward facing wheelhouse anticipated that the vessel would be used in big seas and as such it would be likely that waves may end up crashing into the wheelhouse then they would need to consider using thicker glass or glass that has been toughened, as well as the additional load support for the glass ( eg: frames)
    As I understand it this is the predominate reason for downward facing windscreens as well as its advantageous in regards to reflections.
  6. Guest

    Guest Guest

    Water droplets are hanging away from the glass and so tend to clear faster??

  7. mattias
    Joined: Aug 2003
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    mattias Junior Member

    The big advantage ist that gravity and wind are working together to clear the windscreen.
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