> but since the existing inter-island ferry routes only run about an hour, more speed may not be worth the trouble What inter-island ferry routes? There aren’

> but since the existing inter-island ferry routes only run about an hour, more speed may not be worth the trouble What inter-island ferry routes? There aren’t any, and when there were many of the routes were muuuuuch longer than an hour. The I harbored portion of the island chain is almost 300 miles long - a trip from Hilo to Honolulu would be ~240 miles.