Could this method also be used to hide ships that are being used for Human Trafficking purposes?

Here's an example of it being done: http://www.thetimes.co.uk/edition/news/ghost-ships-in-european-waters-spark-terror-fears-hkdbffdv5

If cargo ships can mysteriously disappear, then women and children could be tracked in large quantities, and no one may even know -- as the ships evade detection by the most common methods.

Anyone have any insight on the potential of this?