3 British guards battle ashore , jump overboard as tanker hijacked off Somalia . British crew were rescued from water by German naval helicopter . Liberian - owned Biscaglia also carrying 25 Indians , 2 Bangladeshis . Pirates seize Greek vessel Alpha Centauri , missing since September .
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 .