Oct 242011
 
Outcroppings on Lonsdale Wall

About the site Lonsdale and Nepean Walls form two sides of the shipping channel through the Heads of Port Phillip Bay. With such a narrow opening to the large area of the Bay, the channel is also known as the Rip for the speed and volume of water that flows through it when the tide is running. A couple of times a day, the tide levels inside and outside the Bay are balanced, and the current stops for around 45 minutes…perfect for a dive. Slack water timings are based on mathematical calculations by the Bureau of Meteorology and nature doesn’t always co-operate. Inevitably, if you’re running late at the boat ramp, slack water will be running early. It’s also important [read more…]