Z Pier is the commercial heart of Westhaven Marina, on Westhaven Drive, a short walk from Auckland's city centre. The marina says it is the largest recreational marina in the Southern Hemisphere. The pier hosts a charter fleet of more than 50 operators, offering fishing charters, harbour cruises, self-skippered boat hire, party cruises and skippered tours. Fishing trips can be booked as a single ticket or as a whole boat, and party cruises suit corporate events, birthdays and pre-wedding get-togethers. Boat sales and leasing businesses are also based here.
The pier is also home to the Etchells racing fleet, the Auckland Dragon Boat Association and Sailability, which teaches people with disabilities to sail and keeps a boat compound at the pier. Dragon boat training uses the sheltered waters of St Mary's Bay. The marina has four yacht clubs and a range of marine businesses. For boat owners, it offers pile moorings, wet berths and a refuelling facility. It suits anyone wanting to get out on the Hauraki Gulf, with or without a boat of their own.