32,000-tonne Mark Dickinson was taken early on Monday . Crew of nearly 100 , from Bulgaria , Ukraine , Russia and the Russia . BBC 's maritime security center believes crew is safe . The latest attacks follow a string of incidents in the pirate-plagued waterway off Somalia at the weekend , with a French yacht , a Yemeni tugboat and a German ship also reported to have been seized . Attack took place despite increased international naval patrols in the Gulf of Aden .
32,000-tonne Mark Dickinson was taken early on Monday . Crew of nearly 100 , from Bulgaria , Ukraine , Russia and the Russia . BBC 's maritime security center believes crew is safe . Attack took place despite increased international naval patrols in the Gulf of Aden .