A seaman engaged in vessel operations of the Secretary under this section and employed through a general agent in connection with a charter or agreement under this section is entitled to all the rights and remedies provided in sections 1(a) and (c), 3(c), and 4 of the Act of
March 24, 1943 (
50 U.S.C. 4701(a), (c), 4703(c), and 4704).