The South Point boat launch, on the southern tip of the island, is found in a small notch in the coastline. This old propeller marks one side of this small bay. Its size shows its not from a boat that would be able to use the ramp. More likely, it’s a souvenir from the wreck of a bigger boat that met its fate in these waters.
Graham's Island 
Although probably a relic of bad luck, it reminds me of the Irish shamrock, which is supposed to be lucky 🙂
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It’s possible the propeller just fell off someone’s boat and no one was hurt, so that would be good luck!
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🙂
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