North Korea's mystery ship: The curious case of the Hao Fan 6

Updated 11:26 PM ET, Thu December 7, 2017

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Hong Kong (CNN)The United Nations brought down the hammer and that was it for the Hao Fan 6.

On October 10, the hulking, 460-foot (140 meter) cargo ship was banned from entering every single port across the globe, punished for violating sanctions on North Korea.
It was just south of South Korea the day the news was announced, according to tracking information by MarineTraffic. Its transponder pinged continuously until 11:17 p.m. Coordinated Universal Time, the data showed.
Then the Hao Fan 6 disappeared.
The Hao Fan 6 seen in South Korea in 2015.

Fighter jets under sugar

The Hao Fan 6 was one of four ships the UN slapped with global port bans.
    But it's not the first time North Korean ships have been sanc