The SS Marine Sulphur Queen — A Tanker Vanishes with 39 Crew (1963)

On February 4, 1963, the SS Marine Sulphur Queen, a 524-foot T2 tanker carrying 15,260 tons of molten sulfur, departed Beaumont, Texas bound for Norfolk, Virginia with a crew of 39. The vessel was last heard from on February 4 via a routine radio message. When the ship failed to arrive in Norfolk, a massive search was launched. The Coast Guard found a few life jackets, some personal effects, and debris identified as coming from the vessel, but no survivors, no bodies, and no substantial wreckage. The Marine Sulphur Queen had simply vanished. The subsequent Coast Guard investigation identified the ship as being in poor structural condition, with a history of hull cracks, and noted that carrying molten sulfur at 275°F made any structural failure potentially catastrophic — a hull breach could have caused the hot sulfur to contact seawater, generating a violent steam explosion and toxic sulfur dioxide gas that could have incapacitated the crew within minutes. However, the absence of a distress call, the minimal debris recovered, and the ship's route through the western edge of the Bermuda Triangle have kept the case in the annals of maritime mystery.