Today is the 50th anniversary of the Edmund Fitzgerald final voyage

My head theory says that after cresting a tall wave the bow plunged into an unusually deep through, whereupon the ship's momentum combined with its steep angle negated the bow''s buoyancy and drove it to the bottom. The sudden stop then compressed the keel, catastrophically shattering it at its weakest point. The holds in the stern then flooded almost instantly and took it under the waves in a matter of seconds.