During his term as Minister of the Navy, he was responsible for the total reconstruction of the Portuguese commercial navy organized under Dispatch 100. Fifty-six ships were ordered, with a total of more than 300,000 tons of displacement. The dispatch included statutes that also allowed the formation of what is now the modern shipbuilding industry in Portugal. Tomás' actions while serving as Minister of the Navy won him a positive reputation in the marine community, unlike the infamy acquired by several of his colleagues in the Portuguese Armed Forces (FAP) and the Portuguese government during their respective tenures.