Sailors. Yachts, tugs, towboats, and unrigged vessels, hearings, 75th Congress, 1st session, on H. R. 7158, to except yachts, tugs, towboats, and unrigged vessels from certain provisions of act of June 25, 1936. as amended [relating to qualifications of seamen on merchant vessels, etc.], July 7, 1937.

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