To 19 ports; the busiest crossings are to Battersea Power Station (6 minutes, 26 times a day), Vauxhall (12 minutes, 26 times a day), Embankment (34 minutes, 26 times a day), London Bridge (52 minutes, 26 times a day), North Greenwich (an hour and a half, 26 times a day), Canary Wharf (1 hour 10 minutes, 24 times a day), Chelsea Harbour (6 minutes, 23 times a day) and St Mary's Wandsworth (12 minutes, 23 times a day).