If you have a Hy-Line certificate / pass for complimentary passage, this can only be booked by phone (not online). To book Island Ferry travel call (800) 492-8082. To book a Harbor Cruise or Fishing call (508) 790-0696. To book a Canal Cruise call (508) 295-3883. You must bring the physical pass with you as payment, on the day of travel.
Please note that if your pass does not have the current year issued on it, call (508) 792-7280 for options.