Princess Cruises, which is part of Carnival Corporation & plc, said it had sold Sun Princess and Sea Princess to undisclosed buyers.

The sale is in line with the parent company’s plan to accelerate the removal of less efficient ships from its fleet. It has earmarked a total of 18 ships for disposal, some of which have already been sold.

Sun Princess that was built in 1995 at Fincantieri was the lead ship in a series of four 77,400 gross ton vessels and when it entered service, it was briefly the largest cruise ship in the world. Sea Princess was completed in 1998.

With the sale of P&O Cruises’ Oceana that was built as Ocean Princess in 2000 earlier this year, only the 1997 built Dawn Princess remains in the Carnival group fleet, sailing since 2017 as Pacific Explorer for P&O Cruises Australia.

“Sun Princess and Sea Princess contributed to significant growth in Australian cruising,” said Princess Cruises president Jan Swartz. “Both ships defined the premium cruise experience with Australians and New Zealanders spending close to 14 million nights aboard these ships. While it is never easy to say goodbye to any ship in our fleet, this will allow us to deploy newer ships enhancing our offerings for Australia cruisers and focus on bringing into service exciting newbuilds like the upcoming delivery of Enchanted Princess.”