PORT PHILLIP BAY
Port Phillip (also commonly referred to as Port Phillip Bay or (locally) just The Bay), is a large bay in southern Victoria, it is the location of Melbourne. Geographically, the bay covers 1,930 square kilometres (480,000 acres) and the shore stretches roughly 264 km (164 mi). Although it is extremely shallow for its size, most of the bay is navigable. The deepest portion is only 24 metres (79 ft), and half the region is shallower than 8 m (26 ft). The volume of the water in the bay is around 25 cubic kilometres (6.0 cu mi).
The bay’s entrance, known as “the Rip” (1.75 miles [2.8 km] wide), between Points Lonsdale to the west and Nepean to the east, leads into a navigation channel 3,600 feet (1,100 metres) wide and 45 feet (14 metres) deep, with access northward to Hobsons Bay and westward to Corio Bay (the harbour of Geelong).