Making Connections: Intermodal Links Between Scheduled Passenger Ferries and Other Public Transporta
http://www.bts.gov/publications/bts_special_report/2009_02_12/pdf/entire.pdf
Reports that just over 40% of U.S. passenger ferry terminals offer connections to other scheduled public transportation modes, compared to 53% for intercity rail terminals and 24% for airports. From the Bureau of Transportation Statistics.