Figure 10: Vessel Fuel Source (2015) [1]

[1]
Source: 

U.S. Coast Guard, Merchant Vessels of the United States (February 8, 2017).  U.S. Department of Transportation, Bureau of Transportation Statistics, National Census of Ferry Operators 2016, Appendix A, Table 6, available at www.bts.gov [3] as of October 2017.

Source URL: https://cms.bts.dot.gov/content/figure-10-vessel-fuel-source-2015

Links
[1] https://cms.bts.dot.gov/content/figure-10-vessel-fuel-source-2015
[2] https://cms.bts.dot.gov/tablefield/export/node/208571/field_table_data/und/0
[3] http://www.bts.gov/