3 Hole Stone Anchor (10A12)
This stone anchor was recovered from near Battery Buoy in Plymouth Sound, different from most of the others found in the area as it has three holes through it and is made from basalt. There are local outcrops of this basalt on Drakes Island and in parts of West Cornwall.
The anchor may what Honor Frost describes as a 'rock anchor', a simple stone weight anchor which would hold on a rocky seabed, or a 'sand anchor' where two of the three holes were fitted with wooden pegs that would dig in to the seabed.
See 10A11 for details about other stone anchors.
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References
Curryer B., 1999, Anchors, an Illustrated History, Chatham Publishing, London, ISBN 1 86176 080 9
Frost H., 1997, Stone Anchors, the need for methodological recording, Indian Journal of History of Science 32 (2)
Nun M., 1993, Ancient Stone Anchors and Net Sinkers from the Sea of Galilee, Kibbutz Ein Gev,
