Here's another version. Added some melting ice floats, lightened the horizon haze color a bit, added reflectiveness to the floats. I initially added reflection to the icebergs but stopped the render after 6 hours (!), because it wasn't very visible, but took a lot of time. Rendered again (this one) without the reflective child, but with some 'fake reflections' in the form of some lighter colors (PF). A pity that reflections are so hard to calculate. Perhaps there is a way to fake this with less calculations, and still obtain a reasonable result for most cases, staff?
I also added some freezing over to the U99. And added some voronoi displacement to the bergs, but that didn't come out as expected. Blended by too dark perlin, I guess.
---Dune