3: Magnetic fields askew

We've all heard myths about compasses in the Bermuda Triangle spinning wildly out of control. Legend has held that the Bermuda Triangle is one of only two places on the planet where a compass points true north, as opposed to the magnetic north.

Now, navigators know that a compass must be calibrated to compensate for the deviation depending on the location on the globe. While the Bermuda Triangle was once, during the 19th century, a place where a compass pointed true north with no variation, the Earth's magnetic field is constantly changing, and along with it, compass variations.

These days, the Bermuda Triangle does not sit in any kind of strange magnetic area, and pilots and sailors know well to adjust their compasses to compensate for the variation, called declination, between magnetic north and true north. There are plenty of charts to help them out with that.