Looking at modern ships, it strikes me how ungainly and somehow less seaworthy they seem to be. RoRo ships were never good ships when it came to storms, but the new overloaded container ships with 5 or more levels of containers above the upper deck ... just look at the underwater body compared to this load.
Ok we all obviously "need" south korean and chinese goods, and it all has to be cheap. But all this comes at a cost.
I remember when the "Herald of free Enterprise" [sic!] sank, in the channel, due to sub-standard front doors not being up to wear and weather. It all is an economic question, it seldom is about security. Then new modern cruise ships have not enough life boats, for all passengers, and they have other standards, than the merchant 'navy'..
Regarding the "Bermuda triangle" i am not one to believe in myths or paranormal events. What has been once said is that the break-up of frozen methane-hydrates may cause sinkings, and also the loss of planes under certain conditions.