that was in Asanvari bay in Vanuatu. It was a deep anchorage - 60 feet and the boat was swinging around a lot. We had full scope out - nearly 300 ft of chain.

How did we get it off? Well, we were lucky. There was a hole in the rock. I threaded a dock line through it and cleated it to the mooring cleats - each end of the line to a different cleat. Then I let out some chain to put the weight on the dock line. Once the chain was slack it was easy to untangle it. Then while I was in the water Nell released one end of the dock line. I never saw anything fall through water as fast as that rock did.

Although you can see some coral growth on the rock is was quite dead when I snagged it.

BTW, this was a few days after the earthquake near Samoa. I turned on the radio at about 6 am and heard the Tsunami warning. I went to the other dozen boats in the anchorage, woke them up to warn them. Then, of course, nothing happened. The water was too deep there for a Tsunami. Ten miles away, in the anchorage we had just left, a yachtie was rowing ashore when she was suddenly aground. That was a shallow anchorage and with the water out they had 200 mm (about 8 inches) under their keel. They vamoused post haste.