The white horizon at night is caused by a tga file, inside the ENV folder, a file named *something_atl.dat*... inside of it, there's a tga file, controlling the water reflection. If I'm not mistaken, the file name is "specular.tga". Export it with S3D, use paint.net to open it. On the first square of colour, it's blank. If you fill with black, the white horizon will desappear, along with the stars and moon. If you use a semi-transparent colour, the white line will desappear, but the moon will "semi" desappear, and the stars will also "semi" desappear. What you can do is to draw a black circle passing on the edges of the square, so you can fill the white horizon with black.
I'm not home now, so I'm not sure of the names.
I don't know if there's another way out to fix it, but I guess there is.
Ask guys like OneLifeCrisis or Privateer, they know how to fix it better.
I'm done modding.
