There was no information about the number of crew or their nationalities.
This week, the US Navy warned that Somali pirates were expanding their range of operations far beyond the East African coast.
One attack has been confirmed on a ship as far north as the Red Sea. The gangs have also extended their raids down beyond the Seychelles.
The pirates were able to strike further away from the coast with the help of bigger mother ships, said the US Navy.
Somalia has been without a stable government since 1991, allowing piracy to flourish.
More than 30,000 vessels annually transit the pirate-plagued Gulf of Aden and the busy shipping lane has offered rich pickings for raiders.
The gangs are currently holding 14 ships and more than 200 seamen in the region.
When first loaded, the map's focus falls on Somalia where most of the pirates are based. Use the arrow icons to scroll left towards Europe and the United States which are both playing a central role in tackling the problem.
Scroll to the right for a story about the Philippines, which supplies many of the world's mariners.
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