The purpose of this legislation is to create a National Commission on the Maritime Industrial Base, known as the SOS Commission, to assess and improve the United States maritime industry. The main objectives are to strengthen the maritime sector, support national defense, revitalize the naval fleet, and protect jobs in shipbuilding and maritime labor. Key provisions of the legislation include the establishment of the Commission, which will conduct investigations into the current state of the maritime industry, identify challenges, and recommend policies to enhance its competitiveness.