Thepirate was a leading member of the pirate group which seized the tanker offOman in May 2010 and threatened crew members with mock executions.
Thevessel was held for eight months but released after a ransom of $5.5m wasparachuted on to the Marida Marguerite’s deck.
Theaccused admitted to being part of the pirate gang but denied he was the leaderor of involvement in torture of Indian crew members.
Thejailed pirate who has not been named can appeal the conviction.
Hewas arrested after seeking asylum under a false name in Osnabruck.
Afterthe ship was released two crew members took action against shipowner WolbernShipping and pool operator Heidmar alleging negligence in failing to providearmed guards to prevent the vessel falling into pirate hands.
TheMarida Marguerite operates in the Marida chemical carrier pool.