Artist rendering of the new P&O ship slated for 2022

(5 p.m. EST) -- Cruisers in the UK now have two megaships on the horizon. P&O Cruises has confirmed it will build a second 5,200-passenger ship, slated for delivery in 2022.

The second new ship and its "yet to be named" sister will be the largest cruise ships ever built for the British market; the first ship is due to launch in 2020. Both are being built by Meyer Werft at its shipyard in Papenburg, Germany.

Like its sister ship, the new ship will run on Liquefied Natural Gas (LNG) fuel, which will significantly reduce air emissions. The "green cruising" technology will make both new ships the most environmentally friendly in P&O Cruises' history.

"We have a bold and ambitious vision for P&O Cruises to become Britain's number one holiday choice and we can only do that by increasing our fleet," said P&O Cruises' Senior Vice President Paul Ludlow. "The build for our 2020 ship begins this spring and it will offer all generations of British guests the holiday of a lifetime on the next generation of P&O Cruises ships."

Until the first ship launches in 2020, P&O Cruises' flagship -- the 3,647-passenger Britannia -- will hold the title for the largest ship in the fleet.

--By Gina Kramer, Editor