When the captain learned of the fire, he attempted to close the bulkhead fire doors on Deck 3. The fire doors were not configured for fully automatic closing and did not respond since emergency alarms near the doors had not been manually triggered by passengers or crew. A vehicle storage area ventilated by large fans to remove exhaust fumes was also located nearby, and the fans pulled air through an improperly secured fire door and caused rapid fire progress from Deck 3 through Deck 4 and Deck 5 via stairways located on either end.