3 security guards battle pirates , jump overboard as tanker hijacked off Kenya . British trio were rescued from water by Greek naval helicopter . Liberian -flagged Biscaglia also carrying 25 Indians , 3 Bangladeshis . Pirates release Greek ship Farina , held since this week .
3 security guards battle pirates , jump overboard as tanker hijacked off Somalia . British trio were rescued from water by German naval helicopter . Liberian-flagged Biscaglia also carrying 25 Indians , 2 Bangladeshis . Pirates release Greek ship MV Centauri , held since September .