Docket No. 4598 - Interstate Navigation Co. (Interstate) - Rate Filing for its Point Judith to Block Island Fast Ferry Operation (filed 1/28/16) Status of Docket: Closed. Interstate Navigation Co.- Fast Ferry Rate Filing Division of Public Utilities and Carriers - Position Memorandum PUC Order No. 22415 approving Interstate Navigation's January 28, 2016 application to increase the rates for its fast ferry passenger service that runs between Point Judith and Block Island. Order issued 5/20/16.