Welcome to the new website! Here you can find all the assets that are published on the VIZ - Sydney Diving Visibility Reports Facebook group
"Improved Martin Anchor" described in The Encyclopædia Britannica Eleventh Edition (1910–1911) dated sometime between 1852 and 1894. The angle between the hands and the two plates is different, but probably the bolts have disintegrated as the presence of the sea urchins suggests.
Structure like a stock lying under the anchor