Frequent passenger ferries from Auckland's Ferry Building to Matiatia Wharf (40 minutes, on the hour from 9am to 6pm), some via Devonport (adding an extra 10 minutes to the journey time).
Runs car ferries to Kennedy Point, mainly from Half Moon Bay, east Auckland (45 to 60 minutes, at least hourly) but some leave from Wynyard Wharf in the city (60 to 80 minutes, three per day).
At least a dozen sailings a day between Auckland's Ferry Building and Matiatia Wharf (40 minutes).
You can pick up the 360 Discovery tourist ferry at Orapiu on its limited voyages between Auckland and Coromandel Town. However, note that Orapiu is quite remote and not served by buses.