There is at least one nice clean logo going around the internets made from the original Jez Goodwin designs for the navy. I'd like some of his specific designs made into similar clearcut logos to make transfers to put on flyers on the tabletop. I assume other brothers and sisters would love to get their hands on this too. So if you have any talent with photoshop and fancy making a simple black and white image out of these sketches, I and the rest of the Imperium would be forever in your debt!
This is the only one on the net:
This is, according to Jez Goodwin's original designs for the Imperial Navy, the more standard icon (the above one being for use on uniforms and bulkheads).
This is the symbol for naval
transports, presumably ideal for Imperial Guard Valkyries etc
This is the one I'm really after, it's the logo for
fighters. Note that the lightning strikes are similar to Horus Heresy imperial symbols!