Maritime · Evidence-led place record
Portonian
Troubridge Island, St. Vincent Gulf, South Australia
Portonian was a ketch built in 1876 and lost on 26/10/1924. Portonian departed Port Adelaide at 6 am on Sunday 26 October 1924 bound for Marion Bay to load a part cargo of gypsum and lift some timbers from the wreck of the schooner Alcairo (owned by John Sheridan, previous owner of Portonian and father of the cur
The oddity, explained
Why is Portonian unusual?
Portonian appears here because the approved source classifies it as maritime. The source describes it as Portonian was a ketch built in 1876 and lost on 26/10/1924. Portonian departed Port Adelaide at 6 am on Sunday 26 October 1924 bound for Marion Bay to load a part cargo of gypsum and lift some timbers from the wreck of the schooner Alcairo (owned by John Sheridan, previous owner of Portonian and father of the cur. Heritage Atlas treats that specific classification-and-description combination as the oddity; the score is a comparative discovery signal, not proof of mystery or the supernatural.
Evidence and further exploration
The coordinate, category and description remain tied to the cited source. Comparative oddness helps discovery; it does not add facts that the source does not provide.
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