| 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.