In an out of air emergency there are really only two things that matter — your next breath, and where it's coming from. An emergency air system (bailout bottle, bailout cylinder or emergency gas supply) is a scuba cylinder carried by a scuba diver for use as an emergency supply of breathing gas in the event of a primary gas supply failure. Some also call this a redundant air source.
Choosing among the available emergency air systems is an exercise in trade-offs. Small, compact bailout cylinders are easy to travel with, easy to use, easy to share and they can be stowed almost anywhere. But depending on how deep you are, they may only give you just enough air to kick for the surface or to find that wayward buddy. Bigger emergency air cylinder systems provide more options in that they may allow you to make a slower ascent, but they also take up more space on your gear, are harder to travel with and can create hydrodynamic drag.
The Scuba Doctor dive shop can supply the H2Odyssey Extra Air Source kit solutions, or help you to build a different setup to suit your particular requirements. Maybe you're a hookah diver needing a backup air source, a recreational diver going deeper on a single cylinder and wanting an out of air emergency solution, or a solo diver who needs a redundant air source to stay safe. Whatever you need, we can help you to achieve it.
Some of Melbourne's dive sites simply don't fit into the classifications of Bommie, Drift, Pier, Reef, Shore, Wall and Wreck. So we've put them here.
65 Metre Hole | Other | Boat access |
Latitude: 38° 17.458′ S (38.290967° S / 38° 17′ 27.48″ S) Longitude: 144° 38.025′ E (144.63375° E / 144° 38′ 1.5″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-04-06 13:12:35 GMT Source: GPS | ||
Nearest Neighbour: North Wall Corner, 97 m, bearing 347°, NNW | ||
Near Lonsdale Wall, Port Phillip. Depth: 60 to 65 m. Dive on: SWF, SWE. | ||
See the 65 Metre Hole dive site page | ||
Chinamans Hat | Other | Boat access |
Latitude: 38° 17.257′ S (38.287621° S / 38° 17′ 15.44″ S) Longitude: 144° 43.587′ E (144.726454° E / 144° 43′ 35.23″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2021-07-28 07:08:19 GMT Source: GPS | ||
Nearest Neighbour: William Salthouse, 2,445 m, bearing 314°, NW | ||
Australian Fur Seals, Port Phillip. Depth: 2 to 12 m. | ||
See the Chinamans Hat dive site page | ||
Entrance Deep | Other | Boat access |
Latitude: 38° 17.794′ S (38.296567° S / 38° 17′ 47.64″ S) Longitude: 144° 37.854′ E (144.6309° E / 144° 37′ 51.24″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-04-06 11:16:16 GMT Source: GPS | ||
Nearest Neighbour: The Plateau, 366 m, bearing 28°, NNE | ||
Depth: 30 to 103 m. Dive only on: SWF. | ||
See the Entrance Deep dive site page | ||
Melbourne Aquarium | Other | Shore access |
Latitude: 37° 49.264′ S (37.821061° S / 37° 49′ 15.82″ S) Longitude: 144° 57.489′ E (144.958158° E / 144° 57′ 29.37″ E) | ||
Datum: WGS84 | Google Map | Get directions | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-03-22 04:46:04 GMT Source: Google Earth | ||
Nearest Neighbour: Lagoon Pier, 3,084 m, bearing 210°, SSW | ||
Melbourne, Yarra River. Depth: 4 to 7 m. | ||
See the Melbourne Aquarium dive site page | ||
Mud Islands | Other | Boat access |
Latitude: 38° 16.205′ S (38.270083° S / 38° 16′ 12.3″ S) Longitude: 144° 45.514′ E (144.758567° E / 144° 45′ 30.84″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-03-22 07:24:12 GMT Source: GPS | ||
Nearest Neighbour: Chinamans Hat, 3,415 m, bearing 235°, SW | ||
Port Phillip Heads Marine National Park. Depth: 1 to 8 m. Mean water temp - summer: 20.0°C. Mean water temp - winter: 11.2°C. | ||
See the Mud Islands dive site page | ||
Trimix Corner | Other | Boat access |
Latitude: 38° 18.021′ S (38.30035° S / 38° 18′ 1.26″ S) Longitude: 144° 38.350′ E (144.639167° E / 144° 38′ 21″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-04-06 13:04:28 GMT Source: GPS | ||
Nearest Neighbour: Nepean Wall, 28 m, bearing 158°, SSE | ||
Depth: 30 to 103 m. Dive only on: SWF. | ||
See the Trimix Corner dive site page | ||
West Channel Pile Light | Other | Boat access |
Latitude: 38° 11.663′ S (38.194383° S / 38° 11′ 39.78″ S) Longitude: 144° 45.405′ E (144.75675° E / 144° 45′ 24.3″ E) | ||
Datum: WGS84 | Google Map | |
Added: 2012-07-22 01:00:00 GMT, Last updated: 2022-04-27 14:30:02 GMT Source: GPS | ||
Nearest Neighbour: Sea Bird, 1,162 m, bearing 225°, SW | ||
Lighthouse. Built: 1881. West Channel, Port Phillip. Depth: 5 m. | ||
See the West Channel Pile Light dive site page |
Total of 7 dive sites.
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DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.
The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source, e.g. GPS, Google Earth, or unknown.
If you don't understand the differences between the different ways coordinates are given, plus how different datum come into play, you might find the article GPS Conversions by Lloyd Borrett a useful read. It describes the problems associated with locating dive sites using a GPS receiver.
In the true spirit of making it easy to obtain, utilise and share the information for non-commercial purposes, you can now Download/view the Scuba Doctor Dive Map GPS Marks (KML file | 427.19 KB | 24-May-2022) in the Keyhole Markup Language (KML) file format used to display geographic data in an Earth browser such as Google Earth or Google Maps.
Some marine GPS units can import the information from a KML file. For others you can use use a file translate program (e.g. GPSBabel) to convert the KML file into an import file format (e.g. GPX) supported by your GPS unit.
If you have have information about other dive sites you'd be happy to see added to the information available here, or any corrections and/or updates to the diving site GPS marks listed here, please feel free to Contact Us. See also, Dive Site Help.
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