A great sea-yarn in General Sherman's memoirs ...
“In the very midst of this panic came the news that the steamer Central America, formerly the George Law, with six hundred passengers and about sixteen hundred thousand dollars of treasure, coming from Aspinwall, had foundered at sea, off the coast of Georgia, and that about sixty of the passengers had been providentially picked up by a Swedish bark, and brought into Savannah. The absolute loss of this treasure went to swell the confusion and panic of the day. A few days after, I was standing in the vestibule of the Metropolitan Hotel, and heard the captain of the Swedish bark tell his singular story of the rescue of these passengers. He was a short, sailor-like-looking man, with a strong German or Swedish accent. He said that he was sailing from some port in Honduras for Sweden, running down the Gulf Stream off Savannah. The weather had been heavy for some days, and, about nightfall, as he paced his deck, he observed a man-of-war hawk circle about his vessel, gradually lowering, until the bird was as it were aiming at him. He jerked out a belaying pin, struck at the bird, missed it, when the hawk again rose high in the air, and a second time began to descend, contract his circle, and make at him again. The second time he hit the bird, and struck it to the deck. . . . This strange fact made him uneasy, and he thought it betokened danger; he went to the binnacle, saw the course he was steering, and without any particular reason he ordered the steersman to alter the course one point to the east. After this it became quite dark, and he continued to promenade the deck, and had settled into a drowsy state, when as in a dream he thought he heard voices all round his ship. Waking up, he ran to the side of the ship, saw something struggling in the water, and heard clearly cries for help. Instantly heaving his ship to, and lowering all his boats, he managed to pick up sixty or more persons who were floating about on skylights, doors, spare, and whatever fragments remained of the Central America. Had he not changed the course of his vessel by reason of the mysterious conduct of that man-of-war hawk, not a soul would probably have survived the night.” - General Sherman
This wreck was found in our time, and its treasure recovered off the bottom of the Atlantic