Sphere class · Princess · In service since 2024
Sun Princess
Sun Princess is a Sphere class cruise ship operated by Princess, in service since 2024. At about 175,500 gross tons, it carries roughly 4,300 guests and ranks #2 by size in the 17-ship Princess fleet we cover.
- 175,500 gross tons
- 4,300 guests
- 1,132 ft long
Photo: Adamdl06204917, CC0, via Wikimedia Commons
Ship facts
- Cruise line
- Princess Cruises
- Ship class
- Sphere class
- Entered service
- 2024 (2 years ago)
- Gross tonnage
- 175,500
- Guests
- 4,300
- Length
- 1,132 ft (345 m)
- Beam (width)
- 157 ft (48 m)
- Builder
- Fincantieri
- IMO number
- 9863118
About Sun Princess
Sun Princess, delivered in 2024, launched the Sphere class as Princess’s first LNG-powered ship and the largest in its fleet. Its signature is The Dome, a glass dome at the top of the ship inspired by the white-and-blue villages of Santorini, which works as a pool club by day and a venue for aerial and acrobatic shows at night. The Piazza atrium spans three decks, and dining ranges from the main restaurants to teppanyaki and seafood. It feels like a step forward for Princess while keeping the line’s calm, grown-up atmosphere.
Best for: Travelers who want a modern, big-ship experience with Princess’s quieter, more refined feel.
Sun Princess highlights
- The Dome, a Santorini-inspired glass dome with a pool and evening shows
- The Piazza, a three-deck atrium
- Signature Collection suites, the top tier of accommodations
- Umai Teppanyaki and a choice of other specialty restaurants
- The Sanctuary adults-only retreat
How Sun Princess compares in size
- Star Princess177,800
- Sun Princess175,500
- Enchanted Princess145,281
- Discovery Princess145,000
- Sky Princess145,000
- Majestic Princess144,216
- Regal Princess142,714
- Royal Princess142,714
- Diamond Princess115,906
- Sapphire Princess115,875
- Ruby Princess113,561
- Emerald Princess113,561
- Crown Princess113,561
- Caribbean Princess112,894
- Grand Princess108,806
- Island Princess92,822
- Coral Princess91,627
Gross tonnage measures a ship's enclosed volume, not its weight. Source: Wikidata.
Sphere class sister ships
Sailing with Princess
Princess Cruises is a mid-priced, relaxed line known for Alaska, smooth MedallionClass technology and a calm, grown-up atmosphere with traditional touches. It sails almost everywhere, from Glacier Bay to Japan and the Mediterranean. It suits couples, retirees and multigenerational families who want comfort without big-ship thrills, less so travelers hunting for water parks or nightlife.
Read our full Princess guide: dining, drinks, tipping and who it suits →
Sun Princess FAQs
How big is Sun Princess?
Sun Princess measures about 175,500 gross tons and is about 1,132 feet (345 m) long. That makes it #2 of 17 Princess ships we cover by tonnage, and #26 among all 255 ocean cruise ships in our guide.
How many passengers does Sun Princess carry?
About 4,300 guests, according to Wikidata's record for the ship. Cruise lines usually quote capacity at two guests per cabin; with third and fourth berths filled, the maximum is higher.
When was Sun Princess built?
Sun Princess entered service in 2024 and was built by Fincantieri. It's one of the newest ships at sea.
What class of ship is Sun Princess?
Sun Princess belongs to Princess's Sphere class, alongside Star Princess. Ships in the same class share a layout and most signature features.
Is Sun Princess good for families?
Princess runs kids and teen clubs for ages 3 to 17, split by age, with science, art, games and Alaska-focused Junior Ranger activities on sailings there. The Sphere class’s Park19 adds a family play zone. Facilities vary by ship, so check what Sun Princess offers for your kids' ages.
Updated November 2026 by the BookMyDreamCruise editorial team. How we research and fact-check.
Sources: Wikidata, Princess official site.