Before we assign any fantastic explanations, we need to have something fantastic to explain. Although there are some inexplicable events related to the area known as the BT, this is far from demanding that anything so incredible as a black hole is responsible. According to Lloyds of London, the worlds largest maritime insurance company, the risk of traveling the BT is no greater than anywhere else.
It now appears that deposits of methane clathrate hydrate in this area may produce occasional large releases of methane gas capable of sinking ships and downing airplanes. If there was a mystery to the BT, this is almost certainly the cause. I suspect that these deposits will eventually account for several mysteries around the planet.