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Emergency Air Systems


The solution to preventing injury from a failed surface air supply while diving is simple but it costs money — carry an accessory emergency air source and regulator. The money so spent on this life saver may well be your best investment ever!

A suitable emergency air source converts a panic ascent into a leisurely trip to the surface. Compared to the overall cost of the diving, boat and other equipment, the cost is relatively small.

Please ensure your accessory air source has a scuba cylinder of the appropriate size for the maximum depth you're diving to. You should plan to have enough air for around 15 minutes of breathing on the ascent with a decompression stop if necessary. Smaller all-in-one air regulators generally do not contain enough gas for a controlled ascent, although they are definitely far better than no spare air at all.

The Scuba Doctor recommends a triple-redundant air supply system should be used while hookah diving. The primary air supply is a low pressure (LP) hookah compressor. The secondary is the diver carried bailout or emergency air system. Finally, in an emergency requiring additional time for diver extraction, there should be a scuba cylinder topside, suitably configured so that it can be used to provide air to the hookah diver.

Please read Introduction to Hookah Diving for more information about things you need to consider with a hookah diving setup.



The Passage Reef Shallow

Reef Dive Reef Dive | Boat access Boat access

Abalone Dive Site Crayfish Dive Site Open Water Rated Reef Dive Site Spearfishing Site

Depth: 10 m (33 ft) to 15 m (49 ft)

Level: Open Water and beyond.

The Passage Reef Shallow is a boat dive site which lies in the Southern Ocean about 600 metres south-east of Point Danger, south-east of the city of Portland, on Victoria's Discovery Coast.

Diving at The Passage Reef Shallow

The Passage Reef Shallow is a boat dive site that can be easily overlooked, but it offers a vast array of interesting dive opportunities. The reef has plenty of interesting structure with plenty to see (both marine life and underwater scenery) on the right day. If you're a hunter gatherer, it's also a place where you can often grab a feed.

Location: Portland, Victoria 3305

Ideal Conditions: This dive site is very weather dependant. Best dived in good conditions with a low swell with light winds. See WillyWeather (Point Danger) as a guide for the tide times and the height of the tide.

Boat Launching: Access is by boat, taking about 15 minutes from the Portland Harbour, Lee Breakwater Road North Ramp or the Portland Harbour, Lee Breakwater Road South Ramp.

{{southern-ocean-warning}}
Abalone Dive Site
Abalone Dive Site
© Mark Norman, Museum Victoria

Divers have the opportunity to catch Abalone at this dive site. Remember your catch bag, legal abalone tool, current Victorian Recreational Fishing Licence, and abalone measure. Please abide by all current fishing regulations if you intend to catch abalone.

See article-catching-abalone for practical abalone hunting advice from The Scuba Doctor, plus melbourne-abalone-dives for a list of other Abalone dive sites near Melbourne.

Crayfish Dive Site
Crayfish Dive Site | © Ian Scholey

Divers have the opportunity to catch Southern Rock Lobster (aka Crayfish) at this dive site. Remember your catch bag, current Victorian Recreational Fishing Licence, rock lobster measure, and cray tags. Once you get back to the dive boat, or shore, make sure you clip the tail and tag your Crayfish as per Fisheries requirements. Please abide by all current fishing regulations if you intend to catch crays. See article-catching-crayfish for practical cray hunting advice from The Scuba Doctor, plus melbourne-cray-dives for a list of other crayfish dive sites near Melbourne. For tips on cooking your Crays, please see article-cooking-crayfish.

Gunditjmara country
Gunditjmara country

Traditional Owners — This dive site is in the traditional Country of the Gunditjmara people of far south-western Victoria which continues over the state border into a small part of south-east South Australia and is bordered by the Glenelg River to the west and the Wannon River in the north. This truly ancient Country extends 100 metres out to sea from low tide and also includes Deen Maar (aka Lady Julia Percy Island) where the Gunditjmara believe the spirits of their dead travel to wait to be reborn. We wish to acknowledge the Gunditjmara as Traditional Owners. We pay respect to their Ancestors and their Elders, past, present and emerging.

 

The Passage Reef Shallow Location Map

Latitude: 38° 23.870′ S   (38.397837° S / 38° 23′ 52.21″ S)
Longitude: 141° 39.250′ E   (141.654166° E / 141° 39′ 15″ E)

Datum: WGS84 | Google Map
Added: 2022-05-24 13:21:05 GMT, Last updated: 2022-05-24 13:36:36 GMT
Source: GPS
Nearest Neighbour: Little Reef, Portland , 514 m, bearing 58°, ENE
Portland, Discovery Coast.
Depth: 10 to 15 m.



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.

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