After some discussions about stats for a Strike Cruiser in this thread I decided to calculate some rules for creating Astartes vessels in RT.
This is Version 2.0 of the document, featuring some new rules (i.e. Battleship Components for Battle Barges) and the five (or seven if you want) known Astartes ship types.
I will come up with a new version including some sample vessels for easy use later, but for now this should be enough.
If anyone of the artists or FFG wants this file taken down because of content or artwork issues I will of cause stop making it available asap.
Here you can find the link to the document.
Have fun!