World's five largest cruise ships - including one that's 5 times bigger than the Titanic

The industry has been pushing the limits of size and luxury, and is at the forefront with the world's largest vessels.

In recent years, the the ships have become truly massive, with the largest being nearly five times the size of the Titanic

Here's a look at the top five biggest in 2024, including the record-breaking Icon of the Seas, which is nearly five times bigger than the .

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Topping the list is the Icon of the Seas, Royal Caribbean's most ambitious vessel to date. Weighing an astounding 250,800 gross tons, it is nearly five times larger than the Titanic, which was 46,328 gross tons.

The ship officially launched in early 2024 and can accommodate 7,600 passengers.

Icon of the Seas offers plenty of attractions, including seven swimming pools and six water slides. It also features the largest water park at sea, with slides for all ages.

Guests can enjoy Central Park, an outdoor garden area with real plants, and the Royal Promenade, an indoor neighbourhood with plenty of shopping and dining options.

The second-largest cruise ship is Utopia of the Seas, which belongs to Royal Caribbean and weighs 238,800 gross tons. It's part of the Oasis class and offers a premium experience for up to 5,700 guests.

Utopia of the Seas features popular attractions from its sister ships, such as the Ultimate Abyss slide, a spiral slide descending ten decks, a full-scale ice skating rink, and the Flow Rider surf simulator.

Utopia also introduced innovative dining experiences and the "Boardwalk" entertainment zone, designed to give guests a unique carnival-like experience.

Another giant in Royal Caribbean's Oasis class is Wonder of the Seas, which ranks third with a weight of 236,857 gross tons.

Launched in 2022, this ship can host up to 7,084 guests and is divided into eight neighbourhoods.

Highlights on Wonder of the Seas include the Suite Neighborhood, which is a VIP area with private amenities for suite guests.

The ship also features Central Park and Boardwalk neighbourhoods, giving guests an open-air space to relax, eat and shop.

And, for anyone who loves adrenaline, it has the Perfect Storm water slides and the Ultimate Abyss slide, as well as entertainment venues like the Aqua Theater and a 1,400-seat indoor theatre.

Weighing 228,081 gross tons, Symphony of the Seas is a fan-favourite and was the world's largest cruise ship when it launched in 2018. It's designed to accommodate up to 6,680 passengers.

Symphony of the Seas offers attractions such as Splashaway Bay, a water park designed for kids, and The Ultimate Family Suite, which has a slide connecting two floors.

The ship also features the Bionic Bar, where robotic arms serve cocktails, and previously mentioned Central Park.

Rounding out the top five is Harmony of the Seas, weighing in at 226,963 gross tons.

Launched in 2016, it was the first Oasis-class ship to offer the Ultimate Abyss, the tallest slide at sea.

Harmony of the Seas also has the Perfect Storm water slide trio and an Aqua Theater for spectacular shows.

Guests can choose from a variety of restaurants for dining, including Jamie's Italian by celebrity chef Jamie Oliver.

The ship's entertainment includes Broadway-style productions, mini-golf and a zip line.