32,000-tonne Malaspina ship was taken early on Monday . Crew of 24 , from Bulgaria , Ukraine , Russia and the Philippines . Last year , pirates attacked nearly 100 vessels and hijacked as many as 40 off Somalia , according to the International Maritime Bureau . EU 's maritime security agency believes she is safe . Rescue took place despite increased international naval presence in Gulf of Aden .
32,000-tonne Malaspina ship was taken early on Monday . Crew of 24 , from Bulgaria , Ukraine , Russia and the Philippines . EU 's maritime security agency believes she is safe . Rescue took place despite increased international naval presence in Gulf of Aden .