P&O Cruises New Ship, Iona

(3:30 p.m. BST) -- P&O Cruises' newest ship, Iona, will feature a glass entertainment dome and a handful of new-to-fleet dining concepts, the line announced Monday.

New restaurants onboard include Keel and Cow, a combination steakhouse and gastropub, and The Quays piazza, which will serve as a foodie market where passengers can find self-service takeaway options from around the world. (Think Asian street food and American diner classics.)

Staple eateries The Glass House, Epicurean, Sindhu and Brodie's will be returning, as well, bringing the total number of onboard dining options to 30.

The line added that it plans to take a new approach to dinner times by offering only flexible Freedom Dining, which allows passengers to choose when, where and with whom they eat in the main dining rooms.

P&O Cruises New Ship, Iona, Pub

"Iona will bring new innovations and choice for our guests, but will also celebrate the best of P&O Cruises' dining and drinking traditions," said P&O Cruises Senior Vice President Paul Ludlow in a statement.

In terms of entertainment, the SkyDome, a two-deck glass dome at the top of the ship's atrium, will house the "hidden" 710 Club, reminiscent of a Covent Garden nightclub, complete with a cocktail bar; four-screen boutique cinema Ocean Studios, offering both classic films and new releases, as well as the latest in sound technology; and a pool with a retractable stage.

P&O Cruises New Ship, Iona, Atrium at Night

The space will also be used for dining, relaxing, deck parties and music (live and DJ-spun), as well as aerial performances and other immersive shows.

Iona is currently under construction at the Meyer Werft shipyard in Papenburg, Germany, and is slated for launch in 2020. It will be the first P&O Cruises ship to run entirely on "clean fuel" -- liquefied natural gas.

--By Ashley Kosciolek, Editor