Russian Navy : two small high - speed patrol boats and a support vessel . Russia : 10 pirates have been detained -- all of them are citizens of Somalia . Russian Chemstar Venus released late Thursday , Amnesty International says . The ship , named the MT Chemstar Venus , was released late Thursday , according to Ecoterra International . Russian release of Ukrainian pirates carrying tanks after a $ 3.2 M ransom was paid .
Russian Navy : two small high - speed patrol boats and a support vessel . Russia : 10 pirates have been detained -- all of them are citizens of Somalia . Russian Chemstar Venus released late Thursday , Amnesty International says . Russian release of Ukrainian pirates carrying tanks after a $ 3.2 M ransom was paid .