He is most famous for inventing the amtrac in 1937, which he originally intended to be a hurricane rescue device. The United States Navy awarded Roebling a Certificate of Achievement in recognition of "exceptional accomplishment" for his invention, dubbed the Roebling Alligator. In 1948, he received the Medal of Merit from President Harry S. Truman, "for exceptionally meritorious conduct in the performance of outstanding service to the United States."