Are you actually doing Baltimore herself or a sister ship? It's not quite clear.
We've got the pattern over at the ShipCamouflage.Com database, but the only clear pictures I can find of Baltimore in dazzle are shipyard photos; and the deck is usally the last thing painted or worked on due to the beating it took during overhaul with supplies being loaded, etc., so they're generally not good indications of whether or not a ship had a pattern on the deck.