The engine, prop shaft, and propeller of the SS Kauai, an old wooden steamship, that sank in 1913. Now it’s home to a variety of fish and is a moderately popular dive site.
Better Days: Engine and propeller
Graham's Island
Life on the Big Island of Hawaii
Graham's Island 
That would be interesting to see. Any other treasures or have they all been scavenged?
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There are still some axles and wheels for rail cars used on the old sugar railway. There used to be a scattering of boilers and other fittings, but they’ve eroded with time.
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No golden doubloons or even a few pennies 😦
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Afraid to. You’d have more luck with a metal detector on a beach.
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