To 19 ports; the busiest crossings are to Chelsea Harbour (20 minutes, 30 times a day), Battersea Power Station (32 minutes, 30 times a day), Embankment (an hour, 30 times a day), North Greenwich (1 hour 55 minutes, 30 times a day), Wandsworth Riverside Quarter (8 minutes, 29 times a day), St Mary's Wandsworth (14 minutes, 29 times a day), Vauxhall (38 minutes, 29 times a day) and Cadogan (26 minutes, 26 times a day).