Table 3,,, Vessel Assignment,,, Type of Vessel,Unlimited License Mariners,Unlicensed Mariners, Ocean-going,73%,57%, Inland,11%,22%, Great Lakes,5%,6%, Some other type,11%,15%, " SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and Maritime Administration, 2002 Mariner Survey, Principal Findings, Washington, DC.",,, ,,, ,,, ,,, ,,, ,,,