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Drysuits - Neoprene

Neoprene is a type of synthetic rubber, often also used in neck and ankle seals in drysuits. Neoprene can be specially prepared to contain millions of tiny enclosed air bubbles, forming a buoyant and thermally-insulating material. This is called "foamed neoprene" or "foam-neoprene" (not all neoprene contains foam).

As foam-neoprene tends to shrink over the years as it out-gases and slowly becomes more rigid. An alternative is crushed or rolled neoprene, which is used in the construction of all Northern Diver neoprene dry suits and is less susceptible to volume changes when under pressure, and shrinks less.

Crushed neoprene dry suits provide some insulation by themselves (unlike membrane dry suits), but even with foam dry suits, thermal under-suits are usually worn. With a crushed neoprene suit, less insulation is needed underneath.

The undersuits usually vary from a fine base layer similar to the Northern Diver Thermalskin, up to a thicker layer like the Northern Diver Arctic Base or Metalux Arctic. Some people also use a standard wet suit (worn dry), or polyester fabrics used in mountaineering and other cold weather uses (these may also be in pieces, including vests or sleeveless vests). Such fabrics also ultimately insulate in the same way as foam, using air in which convection is retarded by the small sizes of the air spaces. However, per volume and weight of fabric, the best-insulating dry polyester fabrics are more effective than foam, because their air pockets are smaller.

Mares XR3 Neoprene Drysuit - Latex Seals

Mares XR3 Neoprene Drysuit - Latex Seals

Sale: $1,478.13
Save: (13%)

New Deep Bommie

Bommie Dive Bommie Dive | Boat access Boat access

Crayfish Dive Site Deep Rated Outside Port Phillip Reef Dive Site Technical Rated

Depth: 30 m (98 ft) to 42 m (138 ft)

New Deep Bommie sits in approx 42 metres of water. If you swim along the West side first (with the Bommie on your left side) you'll come to high peaks rising up from 42 metres to 34 metres, which create gullies that divers can swim through.

When you swim through the last one you'll come to an open expanse of rock usually inhabited by a large school of bull's eyes. At this point, the diver can head North to the centre top of the New Deep Bommie and search for a cave opening at about the 34-metre mark. The opening leads to a swim through which is only a few metres in length with the Odd Wrasse passing you by.

Or the diver can stay on the previous heading and encircle the entire New Deep Bommie where there are rich colours in the form of soft sponges dotted about the face of the Bommie and fish such as Wrasse, Horseshoe Leather Jackets, Sweep, plus more.

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.

Wathaurong (Wadda-Warrung) country
Wathaurong (Wadda-Warrung) country

Traditional Owners — This dive site is in the traditional Country of the Wathaurong (Wadda-Warrung) people of the Kulin Nation. This truly ancient Country includes the coastline of Port Phillip, from the Werribee River in the north-east, the Bellarine Peninsula, and down to Cape Otway in the south-west. We wish to acknowledge the Wathaurong as Traditional Owners. We pay respect to their Ancestors and their Elders, past, present and emerging. We acknowledge Bunjil the Creator Spirit of this beautiful land, who travels as an eagle, and Waarn, who protects the waterways and travels as a crow, and thank them for continuing to watch over this Country today and beyond.


New Deep Bommie Location Map

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 09:00:00 GMT, Last updated: 2021-07-16 17:49:04 GMT
Source: GPS
Nearest Neighbour: J5 Yellow Submarine, 815 m, bearing 12°, NNE
Depth: 30 to 42 m.
Dive only on: SWF, SWE, Ebb.

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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