In order, these things happened: SiriusXM played “The Wreck of the Edmund Fitzgerald” by Gordon Lightfoot. I looked up the song and read through the lyrics, where I learned that the last transmission from the ship was the Captain reporting, over the radio, “We’re holding our own.” I look up the details of the Edmund Fitzgerald and learn that she sank in just over 500 feet of water. YouTube suggests this video of an oil tanker encountering very rough seas. YouTube then suggests this video in which the depths of various shipwrecks (omitting the Edmund Fitzgerald) are compared. Noting that the deepest shipwreckDown the rabbit hole….