Costa Diadema
Costa Diadema is a Diadema Class cruise ship operated by Costa Cruises. She entered service in 2014, measures 132,500 gross tons, and carries approximately 4,947 guests at double occupancy.
Key Facts
- Class: Diadema Class
- Year: 2014
- Tonnage: 132,500 GT
- Guests: 4,947
- IMO: 9636224
Quick Answer: Costa Diadema is the only Diadema Class ship — 132,500 GT, 4,947 guests, launched in 2014. She was Costa's largest ship before the Excellence Class and features an extensive outdoor promenade deck. This page covers deck plans, live tracking, dining venues, and videos.
Best For: Travelers who want a large Costa ship with a standout outdoor promenade and Italian-forward atmosphere. Costa Diadema suits European cruisers who enjoy sea-view walking, outdoor dining, and Mediterranean itineraries at a value price.
Costa Diadema is unique in the fleet as the sole Diadema Class ship, sitting between the Concordia Class (114,000 GT) and Vista Class (135,000 GT) in size. Her signature feature is the wrap-around outdoor promenade lined with bars and restaurants — unusual for a ship of this era. The atmosphere is Italian-forward with multilingual service. If you want Costa's newest and largest ships, the Excellence Class (Smeralda, Toscana) are the flagships at 185,010 GT.
Key Facts
- Ship Class: Diadema Class — 132,500 GT, 4,947 guests, 1,253 crew
- Signature Features: Extensive outdoor promenade deck, Italian-themed dining and entertainment
- Itineraries: Western Mediterranean, Northern Europe
- Entered Service: 2014
A First Look at Costa Diadema
Costa Cruises • Diadema Class
At a Glance
Costa Diadema is a Diadema Class ship from Costa Cruises. With 132,500 gross tons and capacity for 3,724 guests, she entered service in 2014.
Costa Diadema Specifications
Dining on Costa Diadema
Dining venue information coming soon. Costa Cruises ships typically feature a variety of complimentary and specialty dining options.
The Logbook: Costa Diadema
Stories and insights from cruisers who have sailed on Costa Diadema will appear here.
Watch: Costa Diadema Highlights
Swipe through ship walkthroughs, top-10s, and stateroom tours.
Entertainment & Activities
Entertainment details coming soon. Explore shows, activities, and onboard experiences.
Ship Statistics
Costa Diadema Deck Plans
View the official deck plans to explore cabin locations, dining venues, pools, and entertainment areas.
Costa Diadema Deck Plans
View the official deck plans to explore Costa Diadema's layout.
Where Is Costa Diadema?
Track Costa Diadema's current position and upcoming itinerary.
Explore More
- All Ships
- Ship Size Atlas — Compare Costa Diadema with other ships
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Frequently Asked Questions About Costa Diadema
What dining options are available on Costa Diadema?
Costa Diadema offers complimentary dining including the main dining room and buffet. Specialty restaurants vary by ship and may require reservations or carry an additional charge. Check the dining section above for specific venues available on this ship.
How do I find the deck plans for Costa Diadema?
Deck plans are available through the links on this page. You can also find official deck plans on the Costa Cruises website or in the cruise planner app.
Where does Costa Diadema sail?
Ship deployments vary by season. Check the Costa Cruises website for current itineraries and departure ports for Costa Diadema.
How can I track Costa Diadema's current location?
Use the live ship tracker section on this page to see the ship's current position, speed, and next port in real-time when available.
Is this information official?
This page provides planning resources and community insights. Always confirm details with Costa Cruises or your travel advisor before booking.
Sources & Attribution
Ship specifications from official cruise line materials. Photos credited where shown. Data verified against industry sources.
Plan Your Cruise
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