[desertsolitaire]

You’d think a heavily traveled shipping lane would have excellent charts and maps of underwater shoals, reefs, stone outcroppings, etc.
BTW, the Edmund Fitzgerald was so long, if it could be stood upright on its end intact, where it lies in Lake Superior, nearly half would be sticking up out of the water. Still way to deep at the bottom there for conventional SCUBA diver systems; they needed deep diving suits and submersibles to explore it and retrieve its bell for the ceremony and museum.

[hanamizu]

BTW, the Edmund Fitzgerald was so long, if it could be stood upright on its end intact, where it lies in Lake Superior, nearly half would be sticking up out of the water.

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Same was true of the Russian submarine Kursk. Amazing how little distance under water can be so difficult.