The model has 2 lances, 2 weapons battery and 2 dorsal lances, regretfully does not have launch bays, so it cannot be a Battlebarge...
The unofficial "Space Marines Fleets" list (20101023) has options for a "Venerable Battle Barge". These represent ancient vessels, sometimes pre-heresy warships, which the chapter uses as a battle barge. Since you can select "any Imperial or Chaos battleship, grand cruiser, battlecruiser or heavy cruiser (painted appropriately of course!)"* it can still be a venerable Battle Barge even though it lacks the launch bays, it just can't be a normal battle barge. It can't include any non-Marine refits/upgrades.
Unfortunately, though, the only imperial/chaos battleship that I can find which has port/starboard lances
and port/starboard weapon batteries
and dorsal lances is the special "Ark Mechanicus" "Omnissiah's Victory", but I'm not completely sure if you can take that without the Adeptus Mechanicus upgrades.
*It doesn't specifically say that you
can't select the Planet Killer, but if you do you'll be quite rightly called out on it.
