Despite enjoying good visibility and calm seas, the Kaiyo Maru No 5 disappeared without trace on 24th September 1952.Alerted Japanese Navel send a research vessel, Kaiyo Maru No 5, with 22 crews and 9 scientists aboard to investigate the strange disappearances.Author Charles Berlitz in his book "The Dragon's Triangle" (1989), reports that in the years from 1952 to 1954, five Japanese military vessels were lost in the triangle with personnel totaling over 700 people.Sankaku-namis are also known as the triangle waves, waves that come to you from three different directions. A long list of natural phenomenon has been reported such as hugh unexpected sea waves, minicanes, sea quakes, giant whirlpools and sankaku-namis.These stories say that even on a windless day the sea in the triangle were simply too rough to travel safely.
Ancient Chinese records tell of ships have been recorded to be missing in the triangle for more than 3000 years, with vivid records been traced back to the Song and Yuen dynasty of ancient China.Japanese legends tell of unknown forces that overpowered the strongest of ships, and great sea monsters that dragged sailors to their death.Often compared to the Bermuda Triangle, the Dragon's Triangle is an area where sea-going vessels and aircraft allegedly mysteriously disappear.Off the coast of Japan, almost exactly opposite the Bermuda Triangle. The actual area encompasses a triangular line from western Japan north of Tokyo, to Guam to Taiwan.The Japanese call it the Ma-no Umi: the Sea of the Devil.