As naval warfare continued to increase in technical complexity, however, reformers began to consider that the three commissioners and a minimal staff were not enough to handle the navy's procurement needs. By the 1840s, it seemed that a functional approach was preferable—one which established bureaus or offices within the Navy Department to focus on specific areas such as shipbuilding or provisioning. This reform was finally achieved during the administration of President John Tyler, and implemented by his Secretary of the Navy Abel P. Upshur. An Act of Congress on August 31, 1842 abolished the Board of Naval Commissioners and established the "bureau system" in the Department of the Navy. This system, with modifications, lasted until the mid-1960s.