To 15 ports; the busiest crossings are to Vernazza (55 minutes, about 10 times a day, early March to early December), Monterosso (an hour and a half, about 10 times a day, early March to early December), Riomaggiore (35 minutes, about nine times a day, late March to October), Manarola (45 minutes, about nine times a day, late March to October), Lerici (30 minutes, seven times a day, late March to October), Isola Palmaria (5 minutes, five times a day, some weeks from late June to late March), La Spezia (30 minutes, four times a day, early March to early December) and Levanto (1 hour 50 minutes, about twice a day, late March to October).