|Deck License||Unlimited License Mariners|
|Master of any tonnage vessel||38%|
|Third Mate of any tonnage||31%|
|Master of limited tonnage||23%|
|Second Mate of any tonnage||17%|
|First Class Pilot License||17%|
|Chief Mate of any tonnage||13%|
|Mate of limited tonnage||2%|
NOTE: Percentages sum to greater than 100% because respondents were allowed to mark all licenses that they held whether active, inactive, or expired.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and Maritime Administration, 2002 Mariner Survey, Principal Findings, Washington, DC.