Carnival Corp. on Wednesday announced it will implement a $700 million-plan to upgrade its fleet and avoid incidents like the the disabling of the Carnival Triumph. The Carnival Cruise Lines overhaul --which is expected to cost $300 million--will include significant enhancements to emergency power capabilities, new fire safety technology and improved operating procedures, the company said in a release. The parent company, Carnival Corp, also will be making improvements to other ships in its line, including Princess, Holland America, Seabourn and Cunard. Overall enhancements company-wide could be as much as $700 million, said the company.