[@Klomster] Tanks would be completely reasonable. The ship has more than enough room for a full company of guard, which would include at least a dozen or so Leman Russ battle tanks. Assuming it's an armored company from Cadia, they would bring their own vehicles with them. A ship capable of holding 10k+ troops could easily transport full blown tanks. Heck, chimeras aren't that much smaller than Russes, anyway.

But, yea... a company of guard would have their own vehicles, including tanks, especially one from Cadia. Given the lack of any other ships traveling alongside ours, said tanks would Have to be on this ship.