After more than a month of mishaps, Carnival Corp., the parent company of Carnival Cruise Lines, has announced the cancellation of more cruises. 
 
 The cruise line will cancel an additional 10 cruises on the Carnival Triumph and two on the Carnival Sunshine. 
 
 RELATED: Triumph Passengers, Undaunted by Stranding, Will Cruise Again 
 
 The cruise line said in a statement that the additional cancellation of cruises was the "first implementation phase of its fleetwide comprehensive operational review." 
 
 Carnival CEO Gerry Cahill first announced the plan for a fleet-wide review at a cruise industry event in Miami last week, after a fire on the Triumph ship and just days before the Dream and Legend incidents that disrupted more vacations. 
 
 The 10 additional cruises canceled by Carnival affect itineraries through May. It will return to service, the cruise line said, on June 3. Guests on the affected voyages will receive a full refund, reimbursement for non-refundable transportation costs and a 25 percent discount on a future four- to five-day cruise. 
 
 Carnival Sunshine is in a previously scheduled dry dock for a full-ship makeover. It will now enter service May 5, 2013, following the cancellation of two European cruises. Guests on the canceled Carnival Sunshine voyages will receive a full refund, plus reimbursement for any non-refundable travel costs. Additionally, they will receive a 25 percent discount on a future cruise. 
 
 "I would like to provide continued assurances that all of our vessels have fully effective safety systems, equipment and training in place," Cahill said in the statement. "Additionally, our ships receive regular inspections from the United States Coast Guard and other regulatory authorities. 
 
 "The changes we are implementing are focused primarily on improvements to better support continued power and hotel services should unexpected issues arise. 
 
 "In addition, we are applying new learnings and making enhancements in the area of fire suppression and extinguishing. Going forward, the review will focus on the balance of our fleet. While this process will take time, it is our highest priority and has the full support and resources of Carnival Cruise Lines and Carnival Corporation." 
 
 It was the Carnival Triumph engine fire and subsequent stranding of passengers at sea for five days that kicked off a series of events for the cruise line. Next it was the Carnival Elation, which had an issue with one of the two units used to steer the ship, prompting the cruise line to give it a tug boat escort down the Mississippi River. 
 
 Next, the Carnival Dream lost power in port on the Caribbean island of St. Maarten, requiring all passengers to be flown home rather than completing their itinerary. 
 
 Finally, the Carnival Legend had a technical problem that prevented it from cruising at its optimal speed and causing passengers to miss one port of call. ||||| The Carnival Triumph is towed into Mobile Bay near Dauphin Island, Ala., on Thursday. The ship with more than 4,200 passengers and crew members has been idled for nearly a week in the Gulf of Mexico following an engine room fire. (Photo: Dave Martin AP) Tags Cruises 
 
 Carnival Cruise Lines 
 
 Maritime accidents and safety 
 
 Industry giant Carnival has canceled a dozen sailings on two ships so it can make changes to the vessels' power and fire suppression systems. 
 
 Announced late Tuesday, the changes to the Carnival Triumph and Carnival Sunshine come as the line reviews fire safety systems and engine redundancies across its fleet in the wake of the much publicized February fire aboard the Carnival Triumph. Changes to additional Carnival ships are likely as the review continues, the line suggests. 
 
 Both the Carnival Triumph and Carnival Sunshine already are in repair yards undergoing overhauls that are now being extended. 
 
 Carnival "is making significant investments to enhance the level of operating redundancies and the scope of hotel services that can run on emergency power, and further improve each ship's fire prevention, detection and suppression systems," the line says in a statement. "Given the necessary lead time to source needed materials and implement the enhancements, Carnival will extend the current out-of-service period for these two ships." 
 
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 GALLERY: Rough days on the Carnival Triumph 
 
 The 2,758-passenger Carnival Triumph already is in the midst of a nine-week overhaul that began after the February fire and resulted in the cancellation of 14 voyages. It will remain out of service an additional seven weeks for the newly announced changes, resulting in the cancellation of 10 additional voyages. 
 
 The 3,006-passenger Carnival Sunshine (until recently known as the Carnival Destiny) is in the midst of a long-planned makeover that was scheduled to last seven weeks. It will remain out of service an additional three weeks for the newly announced changes, resulting in the cancellation of two voyages. 
 
 The ships now will re-emerge on June 3 and May 5, respectively. 
 
 The new cancellations will affect more than 30,000 vacationers. Carnival says customers on the sailings will receive a full refund, reimbursement for non-refundable transportation costs and a 25% discount on a future cruise. 
 
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 Carnival did not give an estimate of how many more of its 24 ships might require changes to power and fire suppression systems or when such work might take place, but it suggested that the disruption to other ships wouldn't be as great. Carnival announced the fleet-wide review of fire safety and power systems last week. 
 
 "Our team of experts has worked virtually around the clock to determine the best set of solutions and rapidly develop an effective implementation plan for both of these ships," CEO Gerry Cahill says. "Moving forward, we will have the ability to source materials and schedule improvements much more expediently, thus minimizing the scheduling impact on other vessels." 
 
 The Feb. 10 fire on the Carnival Triumph left the ship dead in the water, exposing a lack of redundancy in its main power system. The ship's emergency backup power system kicked in but was inadequate to provide passengers with basic services including working toilets, elevators, air conditioning and lighting in many areas. 
 
 Cahill stressed that Carnival's ships are safe for travel now, even as the review of the line's ships continues. 
 
 "All of our vessels have fully effective safety systems, equipment and training in place," Cahill says. "The changes we are implementing are focused primarily on improvements to better support continued power and hotel services should unexpected issues arise. In addition, we are applying new learnings and making enhancements in the area of fire suppression and extinguishing." 
 
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– Carnival has canceled all voyages on the Triumph—yes, the "poop boat"—until June as part of a fleetwide review. The next 10 Triumph cruises have been canceled, ABC News reports, as have the next two outings for the Sunshine. The change will muck up the plans of more than 30,000 travelers, all of whom will get a full refund, plus reimbursement for non-refundable expenses and 25% off a future cruise. Carnival's CEO issued a statement saying the line was working on changes that would "better support continued power and hotel services should unexpected issues arise," and that they were "applying new learnings … in the area of fire suppression and extinguishing." The Sunshine was already out of service, as part of a long-planned retooling, USA Today explains. The line made no mention of the fate of the Dream or the Legend.