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Drysuits - Trilaminate / Shell
Membrane, Shell and Trilaminate dry suits are made from thin materials, and thus by themselves have little thermal insulation. They are commonly made of vulcanized rubber, or laminated layers of nylon and butyl rubber, this is why they are also known as Tri-Laminate drysuits. Membrane dry suits typically do not stretch, so they need to be made oversized to allow flexibility at the joints through the wearer's range of motion. This makes membrane dry suits easy to put on and get off, provides a great range of motion for the wearer, and makes them comfortable to wear for long periods, as the wearer does not have to pull against rubber elasticity.
To stay warm in a membrane suit, the wearer must wear an insulating Undersuit, today typically made with polyester or other synthetic fibre batting.
Polyester and other synthetics are preferred over natural materials, since synthetic materials have better insulating properties when damp or wet from sweat, seepage, or a leak.
(Except for wool, which is an effective insulator when damp, albeit bulky.)
Northern Diver have a large range of under garments available which include a range of thicknesses, from the thinner Rash Vests and Thermalskin to the more heavy duty Metalux range.
Membrane and Shell dry suits may also be made of a waterproof and breathable material to enable comfortable wear when out of the water for long periods of time. Sailors and Boaters who intend to stay out of the water prefer this type of suit. This type of suit is also supplied to the majority of Fire and Rescue services around the UK by Northern Diver.
Murrells Reef
Reef Dive | 
Boat access
Murrells Reef, Cape Nelson
© Western Abalone Divers Association
Depth: 5 m (16 ft) to 20 m (66 ft)
Level: Open Water and beyond.
Murrells Reef is a boat dive site offshore from Murrells Beach on the western side of Cape Nelson, ten kilometres south-west of Portland on Victoria's Discovery Coast.
Diving at Murrells Reef, Cape Nelson
Offshore from Murrells Beach, Cape Nelson, is an extensive reef system. The depth at Murrells Reef ranges from 5 to 20 metres and the site features plenty of interesting habitat for the usual inhabitants. Take your catch bag if you're hunting Black-lipped Abalone or Southern Rock Lobster (aka Crayfish).
Location: Cape Nelson, Portland, Victoria 3305
Ideal Conditions: Best dived in good conditions with a low swell with light offshore winds. See WillyWeather (Murrells Beach) as a guide for the tide times and the height of the tide.
Access is by boat from the Portland Harbour, Lee Breakwater Road North Ramp or the Portland Harbour, Lee Breakwater Road South Ramp.
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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 | © 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
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.
Murrells Reef Location Map
Latitude: 38° 24.417′ S (38.406948° S / 38° 24′ 25.01″ S)
Longitude: 141° 31.124′ E (141.518739° E / 141° 31′ 7.46″ E)
Datum: WGS84 |
Google Map
Added: 2022-05-20 12:12:21 GMT, Last updated: 2022-05-23 16:17:37 GMT
Source: Peter Ronald GPS
Nearest Neighbour: Murrells Beach, 945 m, bearing 62°, ENE
Cape Nelson, Portland, Discovery Coast.
Depth: 5 to 20 m.
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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 of GPS, Google Earth, or unknown.
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