At 185,000 tonnes, and 345m in length with 16 guest decks, Arvia is P&O’s second ship to be powered by liquefied natural gas (LNG).
The vessel also features an optimised hull design to minimise drag and is installed with the latest energy-efficient technology.
P&O Cruises president Paul Ludlow said: "Arvia embodies the newest trends in travel, dining and entertainment, and is the epitome of a sunshine resort sailing year-round to the warmest climates.
"It takes its sister ship Iona’s design aesthetic and general arrangement but provides new and exciting outside and inside spaces which make the most of Arvia’s deployment to the Caribbean and the Mediterranean."
The line is now preparing the ship to welcome guests for its maiden cruise on 23 December, before it departs for the Caribbean on 6 January 2023 for a winter season from Barbados.