HYANNIS -- After the last trucks carrying supplies for the island of Nantucket rolled aboard, the M/V Eagle ferry shoved off about 9:40 a.m. this morning, 25 minutes behind schedule but hours before most people had been led to believe it would depart.

Seas roiled by Hurricane Sandy had forced the Steamship Authority to cancel all boats to the islands starting Sunday afternoon, well in advance of the storms. The authority resumed service for Martha’s Vineyard at 8:15 a.m. today from Woods Hole, but the longer trip between Nantucket and Hyannis remained an open question.