Costa Diadema and MSC Seaview Bound for Brazil Event

The Costa Diadema and MSC Seaview are en route to Brazil, where they will operate as floating hotels during a United Nations conference in Belém do Pará.

Chartered by the Brazilian government, both ships will accommodate participants attending the 30th Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC COP 30), taking place from November 10 to 21, 2025.

The vessels will dock at a newly constructed cruise terminal at Porto do Outeiro, developed specifically for the high-profile event.

After completing its autumn season in the Mediterranean, the Costa Diadema departed Savona, Italy, on October 24, 2025, beginning its repositioning voyage to Brazil. The 2014-built ship, sailing without passengers, is scheduled to arrive in Belém on November 4, 2025.

Meanwhile, the MSC Seaview began its transatlantic journey from Barcelona on October 25, 2025, making a brief technical stop in Las Palmas de Gran Canaria before continuing across the Atlantic. The Seaside-class vessel, which can carry up to 4,140 guests, is also expected to reach Pará on November 4, 2025, making it the largest cruise ship operating in South America this season.

Once their temporary role as accommodation ships concludes, both vessels will reposition to Santos, where they will resume regular itineraries. The Costa Diadema will operate seven-night cruises to Argentina and Uruguay, while the MSC Seaview will offer weeklong voyages along Brazil’s Northeast coast.

The 2025–26 South America cruise season will also feature the MSC Preziosa,MSC Fantasia, MSC Sinfonia, MSC Armonia, and Costa Favolosa, along with visits from international lines including Oceania, Scenic, Regent Seven Seas, Celebrity, and AIDA. The regional deployment begins in late October and continues through mid-April.