The Bermuda Triangle is a triangular region in the Atlantic ocean off the east coast of the U.S. A scientific analysis, however, shows that although a number of ships and planes were lost in this area, the number is not abnormally larger than other high traffic areas across the globe. You can read more on this here:
Most of the accidents that took place in this region can easily be explained by equipment error or pilot error. What's more interesting is that many of the accidents claimed to be caused by the Bermuda Triangle did not actually happen in the Bermuda Triangle! But they add to the mystery and further promote the myth as truth.
So what can we conclude? Flying and/or sailing, although very safe, still has some danger. The same is true for driving a car. It's safe, yet accidents happen all the time. In a high travel area such as the Bermuda Triangle it is statistically expected there will be more accidents than a low travel area. The higher numbers however are not a reason to jump to paranormal conclusions or government conspiracies.