Michael McFadyen's Scuba Diving Web Site
Home · Contact Me · Sydney Reef Dive Sites · Sydney Shipwrecks · NSW Dive Sites · Australian Dive Sites · Overseas Dive Sites · Dive Accidents and Incidents · Our Yachting Adventures · 4WD Trips · Weather · Search 21 November 2017 21:08
Navigation
Home

General
About Me
My Diving
FAQ
Downloads
Web Links - Dive Clubs
St George Scuba Club
Some of my Best Photos
Contact Me

Dive Sites
Sydney Reef Dive Sites
Sydney Shipwrecks
Kelly Talking on ABC Sydney about Shipwrecks
NSW Dive Sites
Sydney Shipwreck Summary
NSW Shipwreck GPS/Marks
Australian Dive Sites
Overseas Dive Sites
Aircraft I have Dived
Old Bottles

Dive Related Equipment
Shearwater Predator and Heinrichs Weikamp OSTC 2N
Uwatec Aladin Dive Computers
Apollo AV1 Underwater Scooter
Bauer Compressor
DIY Oxygen Stick - Nitrox
GoPro HD Hero Video Camera
My Camera Setup
Purchase of New Dive Boat
Our Dive Boat - Mak Cat
Our Old Dive Boat - Le Scat
My Dive Gear
GPS and Diving
Make Your Own Car Tank Rack

Marine Life
Rarer Sydney Marine Life
Bare Island Pygmy Pipe Horses
Bare Island Sea Horses
Bare Island Nudibranchs
Bare Island Marine Life
Encounter with Southern Right Whale and Calf

Other Dive Info
How Weather Affects Diving in Sydney
Visibility and Wave Averages in Sydney
Waves and Diving
Diving Weather and Sea Conditions
Tide Tables
Dive Accidents and Incidents
Dive Book Reviews
Site Map
Noel Hitchins 1951-2005
Lloyd Bridges - Mike Nelson in Sea Hunt
Our Yachting Adventures
Below is a list of links to the main pages about our yacht, Catlypso and our Our Yachting Adventures:
  • Purchase of Catlypso
  • Details about Catlypso
  • Cleaning/Repairing Catlypso
  • Our Yachting Adventures.
  • Login
    Username

    Password



    Forgotten your password?
    Request a new one here.
    Michael and Kelly's 4WD Trips
    Click here for a list of our Four Wheel Drive and Camping Trips.
    Current Kareela Weather
    A summary of the current weather conditions at our house at Kareela, Sydney, is below. Click here for more Detailed Diving Weather and Conditions. Weather from Michael McFadyen's Tempe Weather Station


    Conditions at
    23:49 on 23/1/17

     
    Temperature 25.6°C
    Humidity 65.0%
    Barometer 1003.4hPa
    Rate -0.3hPa/hr
    Wind Speed: 0 km/hr
    Wind Direction S
    Rainfall for Today 0.0mm
    Rainfall last hour 0.0 mm
    Rainfall last 24 hours 0.0 mm
    Rainfall at Start of Month 814.6 mm
    Rainfall this Year 827.0 mm
    Today's Extremes
    High Temperature 31.2°C at 15:48
    Low Temperature 20.9°C at 6:27
    Peak Wind Gust 0km/hr at 0:00
    Weather from Michael McFadyen's Kirrawee Weather Station
    Yesterday's Extremes
    High Temperature 27.5°C at 17:11
    Low Temperature 19.8°C at 6:29
    Rainfall at Start of Yesterday 827.0 mm
    Rainfall at End of Yesterday 827.0 mm
    Weather from Michael McFadyen's Tempe Weather Station
    Astronomical Data
    Sunrise 5:06
    Sunset 19:05
    Moonrise 1:09
    Moonset 15:04

    Home Brewing
    Click here for an article about Home Brewing.
    Sydney Dive Site Hints
    "M&K Reef was named as Michael and Kelly had their wedding reception straight on-shore from here"
    Osborne Shoals East
    Michael McFadyen's Scuba Diving - Osborne Shoals East Located directly off Cronulla Beach, Osborne Shoals is one part of a reef that can be found intermittently from Kurnell to Bundeena across Bate Bay. Like Merries Reef further to the north, the top of the shoals is generally flat and covered in kelp, although some parts are covered with sponges. Once you drop off the top, however, things change. On the eastern, northern and southern sides a sharp drop off takes place with the depth going from 12 to 20 or more metres in some spots. These are the best sections. The normal dive here is at the northern end of Osborne Shoals.

    This article is about the eastern side of Osborne Shoals. From Port Hacking, head out to the north-east once you pass Oak Park towards the Cape Baily Lighthouse at Kurnell. The GPS Marks of S34ΒΊ 03' 34.1" E151ΒΊ 11' 17.7" (using WGS84 as the map datum). If you use another datum you may be about 220 metres off the wreck. See my GPS Page for more details and how to convert readings.

    In a north-easterly breeze, run in over the shoals from a south-westerly direction. As soon as the depth sounder shows a drop in depth from about 16 metres to 22 metres, drop anchor. This should place you on the reef edge. In a north-westerly or westerly breeze, run in from the sand and drop anchor when the reef comes up from 22 metres to 16 metres. If you do this you should be aware that it is often very difficult to get a good anchor hold on the reef itself.

    After descending to the anchor, if you are not already on the reef edge, swim to the east and you will find the reef edge. You will be near a sort of corner where the reef turns from the north to the west. Head to the north at first, keeping away from the actual bottom of the wall, closer to the sand edge. Examine all the small rocks off the reef and the small overhangs as you go. There are excellent sponge life, small gorgonias and sea squirts along the wall and the rocks. On the sand there are some sea dragons and some serpent eels.

    There are cuttlefish, some eastern blue devilfish and lots of one-spot pullers, yellowtail and quite a few black reef and yellow-tail leatherjackets in this area as well. After about 10 minutes turn around and come back along the wall's bottom. Once back near the anchor, you will notice that the reef here is a little different to the section that you have already explored. The reef is slanted at 45° towards the east and there are two parallel reefs. There is a gap in between which you can swim easily. When you get to the southern end of this bit, turn to the right and go west. You will see that the wall here is a bit more prominent than the section already explored.

    Come back to the east and past the angled reef there are lots of boulders out to the south-east. I am not sure how far they extend. head back to the anchor area and if you have any time left, explore the top of the reef before ascending.

    Sealife that you will almost certainly see at Osborne Shoals includes many different kinds of nudibranchs, with colours varying from white to pink to blue and other beautiful colours. Fish to be found here include blue groper (very friendly), red morwong, cuttlefish, mado, stripey, common bullseye, crimson-banded wrasse, maori wrasse, silver sweep, sergeant baker, old wife, striped seapike, white ear, black reef leatherjacket, yellow-striped leatherjacket, Port Jackson sharks, one-spot puller, ladder-finned pomfret, blue-striped goatfish, yellowtail, pufferfish, eastern blue devil (very beautiful) as well as the previously mentioned serpent eels. Large dusky flatheads and common stingarees can be seen on the sand and you will almost certainly see common sea-dragons near the rocks on the eastern side and west of the cave. I have even seen tiny firefish near the cave.

    This dive site is one that needs more exploring to fully appreciate. Over the coming year I hope to explore it more.

    The visibility here is usually quite good, with 9 to 12 metres being average and often more than 15 metres.

    Copyright © Michael McFadyen 1990 to 2017
    Non-commercial use of an article or photograph is permitted with appropriate URL reference to this site.
    Dive shops, dive operators, publications and government departments cannot use anything without first seeking and receiving approval from Michael McFadyen.
    This web site has been wholly thought up, designed, constructed and funded by Michael McFadyen
    without any help from the Australian Dive Industry since 1996!