The most likely explanation for the disappearances in the Bermuda Triangle is simple human error. The triangle is a busy shipping lane, and it is possible that some of the ships that have gone missing simply lost their way or encountered rough weather. Additionally, the triangle is home to a number of shallow reefs, which could potentially damage or sink ships.
Until there is more evidence to support one theory over another, we will not know for sure what happens to the ships and planes that go missing in the Bermuda Triangle.