Carnival Corp. has ordered two 71,000-ton cruise ships for its German AIDA brand, bringing the tally to six new ships ordered over the past three months. The ships, which will accommodate 2,174 passengers each, are scheduled to enter service in April 2011 and May 2012. The additions will triple AIDA?s total fleet capacity to 16,384 berths. ?With the interest in cruise vacations among Europeans continuing to grow significantly, we are committed to investing in our European brands,? said Micky Arison, Carnival Corp.?s chairman and CEO. Additionally, the company said it has contracted with the Meyer Werft shipyard to increase the size of the fourth vessel in the series, set to debut in April 2010, to match the same passenger size as the just announced ships. (DE)