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Melbourne Bommie Dives

Melbourne Bommie Dives by The Scuba Doctor

Bommie is an Australian term for an outcrop of coral reef or rock formation, often resembling a column, that is higher than the surrounding platform of reef or rock and which may be partially exposed at low tide.

Melbourne is fortunate enough to have some magnificent Bommie dive sites both inside and outside Port Phillip, not far from the heads.

Safety Tip: We recommend you read our Boat Diving Safety and Using a Dive Float and Flag pages and use the described Cray/Drift Buoy Line Diver Freedom System when bommie diving from a private boat.

Castle Rock

Bommie Dive Boat access
Crayfish Dive Site Open Water Rated Outside Port Phillip Bay Reef Dive Site
Latitude: 38° 17.887′ S   (38.298117° S / 38° 17′ 53.22″ S)
Longitude: 144° 35.863′ E   (144.597717° E / 144° 35′ 51.78″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-05-28 04:51:05 GMT
Source: Peter Fear GPS (verified)
Nearest Neighbour: Deep Pinnacles, 250 m, bearing 287°, WNW
Depth: 12 to 20 m.
Dive only on: Ebb.
See the Castle Rock dive site page

Christmas Bommie

Bommie Dive Boat access
Advanced Open Water Rated Inside Port Phillip Bay Reef Dive Site Slack Water
Latitude: 38° 17.256′ S   (38.2876° S / 38° 17′ 15.36″ S)
Longitude: 144° 38.570′ E   (144.642833° E / 144° 38′ 34.2″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-03-12 02:35:20 GMT
Source: GPS
Nearest Neighbour: The Cathedral, 298 m, bearing 179°, S
See the Christmas Bommie dive site page

Corsair Rock

Bommie Dive Boat access
Advanced Open Water Rated Crayfish Dive Site Outside Port Phillip Bay Reef Dive Site Slack Water
Latitude: 38° 18.017′ S   (38.300283° S / 38° 18′ 1.02″ S)
Longitude: 144° 38.481′ E   (144.64135° E / 144° 38′ 28.86″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 08:07:57 GMT
Source: GPS
Nearest Neighbour: Australia RMS, 179 m, bearing 124°, SE
Depth: 3 to 30 m.
Dive only on: SWE.
See the Corsair Rock dive site page

Easter Bommie

Bommie Dive Boat access
Advanced Open Water Rated Crayfish Dive Site Inside Port Phillip Bay Slack Water Subject to Shipping
Latitude: 38° 17.017′ S   (38.283617° S / 38° 17′ 1.02″ S)
Longitude: 144° 38.611′ E   (144.643517° E / 144° 38′ 36.66″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 08:14:00 GMT
Source: GPS
Nearest Neighbour: Jims Hole, 49 m, bearing 168°, SSE
Depth: 16 to 27 m.
Dive only on: SWF, SWE.
See the Easter Bommie dive site page

Knawesome Bommie

Bommie Dive Boat access
Advanced Open Water Rated Crayfish Dive Site Inside Port Phillip Bay Reef Dive Site Slack Water Subject to Shipping
Latitude: 38° 17.152′ S   (38.285867° S / 38° 17′ 9.12″ S)
Longitude: 144° 39.374′ E   (144.656233° E / 144° 39′ 22.44″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 08:16:02 GMT
Source: Alan Beckhurst GPS (verified)
Nearest Neighbour: Awesome Reef, 101 m, bearing 17°, NNE
Depth: 12 to 40 m.
Dive only on: SWF, SWE.
See the Knawesome Bommie dive site page

Lonsdale Bommies

Bommie Dive Boat access
Crayfish Dive Site Open Water Rated Outside Port Phillip Bay Reef Dive Site
Latitude: 38° 17.983′ S   (38.299717° S / 38° 17′ 58.98″ S)
Longitude: 144° 36.730′ E   (144.612167° E / 144° 36′ 43.8″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 08:16:34 GMT
Source: Peter Fear GPS (verified)
Nearest Neighbour: Twin Bommies, 142 m, bearing 283°, WNW
Depth: 12 to 18 m.
Dive only on: Ebb.
See the Lonsdale Bommies dive site page

Lonsdale Rock

Bommie Dive Boat access
Marine Park - No Fishing Outside Port Phillip Bay Reef Dive Site Slack Water Subject to Shipping
Latitude: 38° 17.960′ S   (38.29933° S / 38° 17′ 57.59″ S)
Longitude: 144° 37.420′ E   (144.62366° E / 144° 37′ 25.18″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-03 04:51:37 GMT
Source: GPS
Nearest Neighbour: 16lb Reef, 573 m, bearing 8°, N
See the Lonsdale Rock dive site page

New Deep Bommie

Bommie Dive Boat access
Crayfish Dive Site Deep Rated Outside Port Phillip Bay Reef Dive Site Technical Rated
Latitude: 38° 19.079′ S   (38.317983° S / 38° 19′ 4.74″ S)
Longitude: 144° 34.000′ E   (144.566667° E / 144° 34′ 0″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 08:19:04 GMT
Source: GPS
Nearest Neighbour: J5 Yellow Submarine, 815 m, bearing 12°, NNE
Depth: 30 to 42 m.
Dive only on: SWF, SWE, Ebb.
See the New Deep Bommie dive site page

Shortland Bluff Bommie

Bommie Dive Boat access
Advanced Open Water Rated Crayfish Dive Site Inside Port Phillip Bay Reef Dive Site Slack Water
Latitude: 38° 16.879′ S   (38.281317° S / 38° 16′ 52.74″ S)
Longitude: 144° 39.328′ E   (144.655467° E / 144° 39′ 19.68″ E)
Datum: WGS84 Google Map
Added: 2018-01-17 21:09:37 GMT, Last updated: 2019-02-15 08:22:50 GMT
Source: Peter Fear GPS (verified)
Nearest Neighbour: The Marbles, 284 m, bearing 273°, W
Depth: 18 to 20 m.
Dive only on: SWF, SWE.
See the Shortland Bluff Bommie dive site page

Twin Bommies

Bommie Dive Boat access
Crayfish Dive Site Open Water Rated Outside Port Phillip Bay Reef Dive Site
Latitude: 38° 17.965′ S   (38.299417° S / 38° 17′ 57.9″ S)
Longitude: 144° 36.635′ E   (144.610583° E / 144° 36′ 38.1″ E)
Datum: WGS84 Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-02-15 01:24:52 GMT
Source: GPS
Nearest Neighbour: Lonsdale Arches, 83 m, bearing 237°, WSW
Depth: 12 to 18 m.
Dive only on: Ebb.
See the Twin Bommies dive site page

Total of 10 dive sites.


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 of 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.

GPS latitude explained


Scuba Doctor Dive Map KML File

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 | 250.79 KB | 16-Jun-2019) in the Keyhole Markup Language (KML) file format used to display geographic data in an Earth browser such as Google Earth and 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.


Please Help Us To Correct GPS Marks and Add More Melbourne Dive Sites

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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