how to draw with Path Markup Syntax /Geometry a figure in c#-WPF

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XAML

C#5.0

drawing

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Hi ,as a test I am adding as background of a Grid column a DrawingBrush element which using PElipseGeometry draws something similar a strech ellipse.Here is the code:

<!--Ship shape as a background-->
  <DrawingBrush x:Key="ShipShapeBackgroundBrush" >
    <DrawingBrush.Drawing>
      <DrawingGroup>
        <GeometryDrawing Brush="#D8D8D8">
          <GeometryDrawing.Geometry>
            <RectangleGeometry Rect="0,0,50,85" />
          </GeometryDrawing.Geometry>
        </GeometryDrawing>
        <DrawingGroup.ClipGeometry>
          <EllipseGeometry Center="25,50" RadiusX="22" RadiusY="50" />
        </DrawingGroup.ClipGeometry>
      </DrawingGroup>
    </DrawingBrush.Drawing>
  </DrawingBrush>
</UserControl.Resources>

I would like to draw a figure that looks as a very simple ship map. I want to do it like in the previous code but using this time a Path Geometry to draw a figure more in detail. I checked documentation like this http://msdn.microsoft.com/en-us/library/ms752293(v=vs.110).aspx[^]:
but what I don't know is how to draw my figure and tranlsate to path language (F0 M10,100 L100,100 100,50Z).

I saw examples already done where they draw nice plane shape with path geometry. How can I do it?