To 22 ports; the busiest crossings are to Battersea Power Station (1 hour 15 minutes, 56 times a day), Embankment (56 minutes, 52 times a day), Canary Wharf (24 minutes, 48 times a day), London Bridge (40 minutes, 48 times a day), Greenwich (10 minutes, 42 times a day), Tower of London (35 minutes, 42 times a day), Bankside (44 minutes, 42 times a day) and Surrey Quays (19 minutes, 38 times a day).