# Costa Diadema

- Kind: ship
- Data version: 2026-10-14
- Reference month: 2026-10
- Checked: 2026-07-03
- Page: https://cruise-pitta.com/en/ship/costa-diadema

For reference only. Bookings, prices and schedules are not guaranteed. Check current details with the official provider.

## Overview

- Cruise line: Costa Cruises
- Size: Large
- Market segment: Casual large resort
- Ship: Costa Diadema
- Class: Dream class (Costa Diadema)
- Year built: refurbished 2023
- Region: South America & Antarctica, Northern Europe & Fjords, Ocean Crossings & World Voyages

Entering service in 2014, this large ship in the 132,000-ton class was ordered directly by Costa. Its defining feature is an outdoor promenade encircling the hull, allowing passengers to walk while viewing fjord scenery—a strength during the Northern Europe season. In summer 2026, it will sail to the Norwegian fjords from Kiel and Copenhagen; in winter, it will operate in the South America season around Brazil and Argentina.

- Family-friendly
- Value-focused
- First-time cruise friendly

Checked: 2026-07-03

[See the ship’s size](https://cruise-pitta.com/en/ship/costa-diadema/scale)

## Specifications

Checked: 2026-07-03

| Item | Value |
| --- | --- |
| Gross tonnage | 132,500 GT |
| Passenger capacity | 3,724 |
| Crew | 1,253 |
| Decks | 17 |
| Cabins | 1,862 |
| Length | 306 m (1,004 ft) |
| Year built | 2014 |
| IMO number | 9636888 |

## Ship character

Checked: 2026-07-03

| Item | Score (0–5) |
| --- | --- |
| Families | 4 |
| Adults | 3 |
| Luxury | 2 |
| First-time cruisers | 4 |
| Entertainment | 4 |
| Dining | 4 |
| Japanese-language support | 1 |

### Great for

Norwegian fjords
South America season
Scenery-focused travelers

### Less suited to

Travelers seeking the newest facilities
Adults prioritizing quiet

## Japanese language support and practical onboard information

A guide to public baths, Japanese food and language support, payment in yen, smoking, dress codes and power outlets, based on available official and other sources. Details may vary by itinerary and season. Check the official website for current information.

| Item | Value | Label | Description | Scope | Sources | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| Public bath | Similar facilities, such as a thermal suite | Official | — | — | [costacruises.eu](https://www.costacruises.eu/content/dam/costa/costa-asset/costa-business/MICE%2022%20EN.pdf) | Checked: 2026-10-04 |
| Japanese food | Japanese food at extra cost | Official | — | — | [costacruises.eu](https://www.costacruises.eu/content/dam/costa/costa-asset/costa-business/MICE%2022%20EN.pdf) | Checked: 2026-10-04 |
| Japanese language support | — | Official | — | Line-wide | [costa-cruise.jp (Language: Japanese)](https://costa-cruise.jp/) | Checked: 2026-10-04 |
| Payment in yen | Payment in yen not accepted | Official | — | — | [costacruises.co.uk](https://www.costacruises.co.uk/useful-links/useful-info.html) | Checked: 2026-10-04 |
| Smoking | Smoking in designated areas only | Official | — | — | [costacruises.eu](https://www.costacruises.eu/content/dam/costa/costa-asset/costa-business/MICE%2022%20EN.pdf) | Checked: 2026-10-04 |
| Dress code | Formal nights | Official | — | Line-wide | [costacruises.com](https://www.costacruises.com/useful-links/useful-info.html) | Checked: 2026-10-04 |
| Power outlets | Plug types: A, C | Official | — | Line-wide | [costa-cruise.jp (Language: Japanese)](https://costa-cruise.jp/faq/) | Checked: 2026-10-04 |

Official: confirmed by the cruise line or another official source / Secondary source: confirmed by other sources / Estimated: inferred by Cruise Pitta / Not stated: no information found in official sources

English text in preparation.

## At a glance

Checked: 2026-07-03

| Item | Value |
| --- | --- |
| Kids club | Yes |
| Adults-only areas | Unknown |
| Waterpark | Yes |
| Casino | Yes |
| Theater and shows | Yes |
| Spa | Yes |
| Cinema | Yes |
| Accessible cabins | Yes |
| Solo cabins | Yes |
| All-inclusive | No |

- Japanese support rating (editorial): 1/5

Five-point rating of the scope of Japanese-language services

## Cabins by category

Checked: 2026-07-03

| Cabins | Description | Cabin count / recommended decks | Size | Capacity / beds | Features | Links |
| --- | --- | --- | --- | --- | --- | --- |
| Interior Classic (IC/IP) | The most affordable windowless grade. Of the 666 rooms, 17 are solo studio cabins for 1 guest on Decks 1-2; the rest are standard interiors for 2-4 guests. | 666 cabins | 12–14 m² (129–151 ft²) (Estimated) | Maximum 4 people / Convertible twin beds; bunk or Pullman-style beds available. | Balcony: No, Window: No, Concierge: No, Connecting: Yes, Solo: No, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |
| Studio Single Cabin (CI) | Dedicated studio cabins for solo cruises. A rare category with only 17 cabins available without a solo supplement (an additional charge based on the fare for two people). | 17 cabins / Decks 1–2 | 14 m² (151 ft²) (Estimated) | 1 person (single occupancy) / 1 single (twin) bed, with private bath and toilet | Balcony: No, Window: No, Concierge: No, Connecting: No, Solo: Yes, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |
| Oceanview Classic/Premium (EC/EP) | Includes large fixed windows but no balconies. There are 240 rooms. Premium-grade rooms are slightly larger at approximately 20 m². | 240 cabins | 18–20 m² (194–215 ft²) (Estimated) | Maximum 4 people / Convertible twin beds; bunk or Pullman-style beds available. | Balcony: No, Window: Yes, Concierge: No, Connecting: Unknown, Solo: No, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |
| Balcony Classic/Premium/Cove (BC/BP) | The main category and largest by number, with 905 rooms. Includes private balconies (3-5 m²); approximately 110 are Cove Balcony rooms with floor-to-ceiling glass. | 905 cabins | 17 m² (183 ft²) (Estimated) | Maximum 4 people / Convertible twin beds + sofa bed. | Balcony: Yes, Window: Yes, Concierge: No, Connecting: Yes, Solo: No, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |
| Mini Suite (MS) / Balcony Suite (S) | An intermediate grade combining mini-suites (14 rooms, 7 m² balconies) and balcony suites (49 rooms, 6 m² balconies). No bathtub is included. | 63 cabins | 26 m² (280 ft²) (Estimated) | Maximum 4 people (balcony suites: 3 people) / Convertible twin beds + sofa bed. | Balcony: Yes, Window: Yes, Concierge: No, Connecting: Unknown, Solo: No, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |
| Grand Suite (GS) / Samsara Spa Suite | The top grade onboard, with 14 grand suites. Selecting a Samsara Spa partner room (11 suites, 90 balcony rooms, and 40 interior rooms, 141 rooms total) includes unlimited spa access and complimentary treatments. | 14 cabins | 26–32 m² (280–344 ft²) (Estimated) | Maximum 4 people / Convertible twin beds; double sofa bed available. | Balcony: Yes, Window: Yes, Concierge: Yes, Connecting: Unknown, Solo: No, Accessible: No | [Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified) |

Approximate figures from official and reliable sources. Cabins vary by ship, category, and sailing.

Links generally lead to official pages; some have not been verified.

## Dining

Checked: 2026-07-03

- Onboard currency: EUR

### Included in the fare (no extra charge)

#### Main Dining Rooms (Fiorentino / Adularia)

- Category: Included
- Cuisine: Mediterranean and Italian-centered international cuisine
- Hours: Breakfast, lunch, and dinner (assignment varies by cabin)

Fiorentino is a two-level atrium venue toward the stern, while Adularia occupies the full width of Deck 3. They are divided into two main dining rooms.

#### Corona Blu Buffet

- Category: Included
- Cuisine: International buffet
- Hours: Breakfast, lunch, and dinner

Buffet restaurant on Deck 10, organized into stations for pasta, grilled dishes, desserts, and more.

### Specialty dining (prices in the onboard currency)

#### Club Diadema

- Category: Extra charge
- Cover charge (onboard currency): EUR 25 (4-course meal)
- Cuisine: Italian fine dining
- Hours: Dinner only

The ship's finest fine-dining venue, located on deck 5. It features black-and-white chairs, mauve walls, and blue indirect lighting. Each of the 4 courses offers several choices.

- Beer: Bottled beer, about €5
- Soft drinks: Canned soda, about €3
- Water: Glass service is charged; bottles are sold separately

| Menu | Price (onboard currency) |
| --- | --- |
| Spiny lobster Caesar salad (appetizer) | Included in course (€25) |
| Pear risotto (primo) | Included in course |
| Choice of tiger shrimp/salmon/ribeye/lamb chops (secondo) | Included in course |

#### Tavola Teppanyaki

- Category: Extra charge
- Cover charge (onboard currency): €25 (vegetarian/classic), €30 (deluxe)
- Cuisine: Teppanyaki (chef-led live cooking)
- Hours: Dinner

Teppanyaki restaurant on Deck 5. The meal starts with soup and salad, followed by rice, vegetables, meat, and seafood prepared by the chef in front of guests.

- Beer: Bottled beer, about €5
- Soft drinks: Canned soda, about €3
- Water: Glass service is charged; bottles are sold separately

| Menu | Price (onboard currency) |
| --- | --- |
| Vegetarian/classic (choose 1 main dish) | €25 |
| Deluxe (choose 2 of wagyu, lamb rack, lobster, and shrimp) | €30 |

#### Piazza Pizza

- Category: Extra charge
- Cover charge (onboard currency): €6.5 per piece
- Cuisine: Italian pizza
- Hours: Lunch through evening

Pizzeria on Deck 5, with indoor tables or outdoor cabana seating overlooking the sea.

- Beer: Bottled beer, about €5
- Soft drinks: Canned soda, about €3
- Water: Glass service is charged; bottles are sold separately

| Menu | Price (onboard currency) |
| --- | --- |
| Pizza (dough stretched in front of you by the pizzaiolo) | €6.5 per piece |

#### Sushino at Costa

- Category: Extra charge
- Cover charge (onboard currency): Basic use is included for suite guests; others may reserve for an additional charge when seats are available (exact amount unconfirmed)
- Cuisine: Sushi and sashimi
- Hours: Aperitif, lunch, and dinner (takeaway available)

Costa's first sushi bistro. Primarily for suite guests, but other stateroom guests can use it for an additional charge if seats are available.

- Beer: Bottled beer, about €5
- Soft drinks: Canned soda, about €3
- Water: Glass service is charged; bottles are sold separately

| Menu | Price (onboard currency) |
| --- | --- |
| Assorted nigiri, rolls, and sashimi | Pricing details unconfirmed |

## Facilities and activities

Checked: 2026-07-03

### Highlights

- Eliodoro Atrium: An atrium rising through Decks 3 to 11, with 4 panoramic glass elevators and more than 7,000 works of art
- Pepper robot: A humanoid guide robot that supports 3 languages is stationed on board
- A crown-motif design concept inspired by the ship's name, Diadema (tiara)
- Golden Jubilee Casino
- Samsara Spa's thalassotherapy treatments, which do not use real snow (4 floors, about 7,800 m²)

| Facilities | Category | Kind | Scope | Amount | Description | Links |
| --- | --- | --- | --- | --- | --- | --- |
| Deck 5 Promenade | Included | Promenade | Adults only: No, For children: No | Unknown | An outdoor loop promenade approximately 500 m long, styled after Italian seaside terraces with bars, restaurants, and sea views. | Unknown |
| Golden Jubilee Casino | Extra charge | Casino | Adults only: Yes, For children: No | Unknown | A casino with slot machines and gaming tables at the aft of Deck 5. | Unknown |
| Emerald Theater | Included | Theater | Adults only: No, For children: No | Unknown | A main show lounge seating approximately 1,500 guests. | Unknown |
| Squok Club | Included | Kids | Adults only: No, For children: Yes | Free (Estimated) | A Costa kids and teen club for ages 3-17, with play equipment modeled on a fairy-tale castle and pirate ship, plus a separate teen area for ages 12-17. | Unknown |
| Samsara Spa | Extra charge | Spa | Adults only: No, For children: No | Use of the spa pool and similar facilities costs about €105 for 7 nights; a day pass costs about €35. Massage examples start from around €150 for 50 minutes (50-minute hot stone massage: €154). (Estimated) | A four-floor wellness facility covering approximately 7,800 square meters, with a thalassotherapy pool, treatment rooms, sauna, steam room, UVA solarium, and more. | Unknown |
| Gym | Included | Sports | Adults only: No, For children: No | Machine use is free (Estimated) | A fitness gym on Deck 14 next to the spa, overlooking the midship pool. | Unknown |
| Jogging Track | Included | Jogging | Adults only: No, For children: No | Unknown | A track on Deck 14 circling the kids pool, funnel, and sports deck with basketball and volleyball courts. | Unknown |
| Pools (Diana Main Pool, Aft Pool, Kids Pool) | Included | Pool | Adults only: No, For children: No | Unknown | Three pools: the main Diana Pool, aft pool, and kids pool. | Unknown |
| Lido Squok Mini Aqua Park | Included | Waterslides | Adults only: No, For children: Yes | Unknown | A small aquapark for children with an outdoor play area, wading pool, and mini water slide. | Unknown |
| Piazza Shopping Area | Extra charge | Shop | Adults only: No, For children: No | Charged only at purchase (Estimated) | An approximately 1,100-square-meter shopping area lined with designer boutiques. | Unknown |
| Two-Level Disco/Nightclub | Extra charge | Nightclub | Adults only: No, For children: No | Admission is free; drinks are charged per order (Estimated) | A two-level nightclub offering nighttime dancing and entertainment. | Unknown |
| Bars & Lounges | Extra charge | Bar | Adults only: No, For children: No | Unknown | Several themed bars are located around Deck 5, including a wine bar and a two-level beer-garden-style space. | Unknown |
| Library | Included | Library | Adults only: No, For children: No | Unknown | A library corner with internet terminals. | Unknown |
| Heliodorus Atrium | Included | Signature attraction | Adults only: No, For children: No | Unknown | A central atrium spanning decks 3 to 11, with four panoramic glass elevators and more than 7,000 artworks and sculptures, creating a crown-like vertical space inspired by the ship name Diadema (tiara). | Unknown |

## Families, adults-only areas, and practical information

Checked: 2026-07-03

### Children and families

- Squok Club — A Costa kids and teen club for ages 3-17, with play equipment modeled on a fairy-tale castle and pirate ship, plus a separate teen area for ages 12-17.
- Lido Squok Mini Aqua Park — A small aquapark for children with an outdoor play area, wading pool, and mini water slide.

### Adults-only areas

- Golden Jubilee Casino — A casino with slot machines and gaming tables at the aft of Deck 5.

### Practical information (line-wide)

| Item | Value |
| --- | --- |
| Onboard currency | EUR |
| Gratuities | The service charge (gratuity) is not included in the fare. Instead, a fixed amount per night is automatically added to the onboard account after boarding. It applies uniformly to all ships and all guests regardless of fare type (Basic/Comfort-type/Deluxe), and guests are not expected to reduce or remove it at their discretion. |
| Payment | Cashless onboard |
| Voltage | Mainly 220V (depending on the ship, some are a mix supporting 110-220V/60Hz). Japanese devices that are 100V-only may not be usable without a transformer, so please check. |
| Formal nights | The number of gala nights roughly scales with cruise length: about 1 on a 3 to 4 night cruise, 2 on a 7-night cruise and 3 on a 10-night cruise. On Mediterranean cruises, 1 to 2 is typical. |
| Medical facilities | There is a medical center staffed by doctors and nurses, available 24 hours for emergencies. Consultations and treatment are not free and are charged to your onboard account each time (travel insurance generally cannot be used directly at the counter, and costs are usually claimed afterward). An exact Costa-specific fee schedule could not be confirmed from public information. |
| Bringing items onboard | Bringing alcohol on board is prohibited in principle, whether at embarkation or at ports of call, and anything found in X-ray screening is confiscated until the end of the cruise. Wine and champagne may be allowed only if approved by prior application, in which case a corkage fee of €10 per bottle is charged. Alcohol purchased at ports of call or in the onboard duty-free shops is also held until the end of the cruise (effectively confiscated). |
| Mobile and connectivity | The EU "free roaming" rule applies only on land, such as at ports of call. If your phone connects to the ship's maritime network at sea, expensive maritime roaming charges outside the scope of the regulation (both calls and data are far higher than usual) apply, so the practical standard approach at sea is to put your phone offline or in airplane mode and use Costa's onboard Wi-Fi package or an eSIM. |

Checked: 2026-07-03

- [costacruises.com](https://www.costacruises.com/useful-links/service-charges.html)
- [costacruises.com](https://www.costacruises.com/experience/new-rates.html)
- [costacruises.com](https://www.costacruises.com/experience/comfort-plus.html)
- [sightdoing.net](https://sightdoing.net/costa-cruise-onboard-costs/)
- [cruisemummy.co.uk](https://www.cruisemummy.co.uk/costa-cruise-drink-packages/)
- [travelmarketreport.com](https://www.travelmarketreport.com/cruises/articles/costa-cruises-introduces-simplified-rates-for-north-american-market)
- [travelagentcentral.com](https://www.travelagentcentral.com/cruises/costa-cruises-streamlines-fare-structure)
- [emmacruises.com](https://emmacruises.com/costa-cruises-laundry-services-packages-price-lists-and-alternatives/)
- [icruise.com](https://www.icruise.com/cruise-lines/costa-cruises-smoking-policy.html)
- [mycosta.costacruises.eu](https://mycosta.costacruises.eu/web-checkin.html)

## Itineraries on this ship

### [8-Night South America & Antarctica Cruise from Buenos Aires](https://cruise-pitta.com/route/costa-diadema-8n-buenos-aires)

- Region: South America & Antarctica
- Itinerary: Nov 2026 – Apr 2027
- Departure months: 2026-11, 2026-12, 2027-01, 2027-02, 2027-03, 2027-04
- Ship: Costa Diadema
- Cruise line: Costa Cruises
- Duration: 8 nights
- Departure / arrival: Buenos Aires → Buenos Aires
- Port: Buenos Aires › Montevideo › Punta del Este › +3 › Buenos Aires
- Cruise type: Round trip / 7
- Amount: From $1,332.00 · Price on the US site (USD, incl. taxes; JPY is an estimate)
- Fare level: Standard

Checked: 2026-07-22

### [7-Night Northern Europe & Fjords Cruise from Kiel](https://cruise-pitta.com/route/costa-diadema-7n-kiel)

- Region: Northern Europe & Fjords
- Itinerary: May–Aug 2027
- Departure months: 2027-05, 2027-06, 2027-07, 2027-08
- Itinerary: 3 itineraries
- Ship: Costa Diadema
- Cruise line: Costa Cruises
- Duration: 7 nights
- Departure / arrival: Kiel → Kiel
- Port: Kiel › Copenhagen › Hellesylt / Geirangerfjord › +3 › Kiel
- Cruise type: Round trip / 7
- Amount: Unknown
- Fare level: Standard

Checked: 2026-10-05

### [7-Night Northern Europe & Fjords Cruise from Copenhagen](https://cruise-pitta.com/route/costa-diadema-7n-copenhagen)

- Region: Northern Europe & Fjords
- Itinerary: May–Jul 2027
- Departure months: 2027-05, 2027-07
- Itinerary: 2 itineraries
- Ship: Costa Diadema
- Cruise line: Costa Cruises
- Duration: 7 nights
- Departure / arrival: Copenhagen → Copenhagen
- Port: Copenhagen › Hellesylt / Geirangerfjord › Geiranger › +3 › Copenhagen
- Cruise type: Round trip / 7
- Amount: Unknown
- Fare level: Standard

Checked: 2026-10-05

### [26-Night Ocean Crossings & World Voyages Cruise from Santos to Kiel](https://cruise-pitta.com/route/costa-diadema-26n-santos-to-kiel)

- Region: Ocean Crossings & World Voyages
- Itinerary: Apr 2027
- Departure months: 2027-04
- Ship: Costa Diadema
- Cruise line: Costa Cruises
- Duration: 26 nights
- Departure / arrival: Santos → Kiel
- Port: Santos › Rio de Janeiro › Salvador › +10 › Kiel
- Cruise type: One way / 14
- Amount: Unknown
- Fare level: Standard

Checked: 2026-10-09

## What is included and what costs extra

Checked: 2026-07-03

### Included in the fare / extra

| Item | Amount |
| --- | --- |
| Meals (main restaurants) | Included |
| Alcohol | Extra charge |
| Gratuities | Extra charge |
| Wi‑Fi | Extra charge |
| Specialty dining | Extra charge |
| Shore excursions | Extra charge |

The basic fare (My Cruise/Cruise Only) includes the cabin, full board, and entertainment, while drinks, Wi-Fi, tips, and specialty restaurants are charged separately. The higher Comfort Plus/Total Comfort plans include a drinks package, and Deluxe, for suites, adds a dedicated restaurant, spa access, a higher-tier drinks package, and more.

### Onboard costs (original currency)

- Onboard currency: EUR

| Item | Category | Amount |
| --- | --- | --- |
| Drinks (one beer) | Extra charge | Bottled beer, about €5 (Estimated) |
| Soft drinks and water | Extra charge | Soft drinks Canned soda, about €3 / Water Water by the glass is charged; bottles are sold separately (about €2-3 at bars, etc.) (Estimated) |
| Drink package | Extra charge | My Soft Drinks (non-alcoholic): €23-27/day; My Drinks (standard, including alcohol): €35-42/day; My Drinks Plus (premium): €48-57/day. A 15% service charge is added to all, and advance online purchase often gives a 20-30% discount. (Estimated) |
| Wi‑Fi | Extra charge | The full cruise duration can also be purchased at once, often with an approximately 8-10% discount. (Estimated) |
| Gratuities (automatic service charge) | Unknown | Ages 15 and over €11 per day, ages 4 to 14 €5.50 per day, ages 3 and under free. A separate 15% service charge is added to drink purchases. (Estimated) |
| Laundry | Unknown | No self-service laundry. Per-item charges (shirts about €3.50, T-shirts about €1.50, one-piece dresses about €14). Higher-tier Costa Club members (Gold/Platinum) can also use the unlimited-fill Magic Bag service for €19.99. (Estimated) |
| Shore excursions | Unknown | Extra; varies by port (Estimated) |

Prices are shown in the onboard currency; no currency conversion is applied.

Checked: 2026-07-03

- [costacruises.com](https://www.costacruises.com/useful-links/service-charges.html)
- [costacruises.com](https://www.costacruises.com/experience/new-rates.html)
- [costacruises.com](https://www.costacruises.com/experience/comfort-plus.html)
- [sightdoing.net](https://sightdoing.net/costa-cruise-onboard-costs/)
- [cruisemummy.co.uk](https://www.cruisemummy.co.uk/costa-cruise-drink-packages/)
- [travelmarketreport.com](https://www.travelmarketreport.com/cruises/articles/costa-cruises-introduces-simplified-rates-for-north-american-market)
- [travelagentcentral.com](https://www.travelagentcentral.com/cruises/costa-cruises-streamlines-fare-structure)
- [emmacruises.com](https://emmacruises.com/costa-cruises-laundry-services-packages-price-lists-and-alternatives/)
- [icruise.com](https://www.icruise.com/cruise-lines/costa-cruises-smoking-policy.html)
- [mycosta.costacruises.eu](https://mycosta.costacruises.eu/web-checkin.html)

## Boarding, atmosphere, and links

Checked: 2026-07-03

### Boarding and logistics

- Japan departures: No
- Home ports: Kiel (Germany, summer departure port for Northern European fjords), Savona (Italy, departure port for autumn and winter Mediterranean cruises)
- Departure ports: Kiel, Copenhagen (Denmark), Flam, Bergen, Stavanger (Norway, fjord area), Savona, Marseille (France), Barcelona (Spain), Civitavecchia (Italy, near Rome)

### Atmosphere and guests

- All ages
- True to its name Diadema (Italian for tiara, or a crown), the Costa flagship features lavish interiors with a crown motif. The Eliodoro Atrium, which rises through Decks 3 to 11, has four panoramic glass elevators and more than 7,000 artworks, creating a 'palace at sea' effect. Seasonal deployments continue: in summer to Northern Europe and the Norwegian fjords from its home port of Kiel, and in autumn and winter around the Mediterranean (Barcelona, Marseille, Civitavecchia, etc.) from Italian ports such as Savona.
- A lively, multinational clientele, mainly Italian, with passengers from France, Germany, Spain, and other southern European and European countries. Families and multigenerational travelers make up a high proportion. There are no Japanese-speaking staff or Japanese cuisine.

[Check the official page](https://www.costacruises.com/fleet/diadema.html) (Unverified) / Checked: none (unverified)

Launched in 2014 as a Dream-class ship, it is not equipped with next-generation fuel engines such as LNG (Costa's LNG ships start with Costa Smeralda). Its environmental measures are limited to what was standard when it entered service, such as advanced wastewater treatment and LED lighting, and details such as any proprietary environmental certification could not be confirmed.

## Links

### Official

- [Official ship page](https://www.costacruises.com/fleet/diadema.html)

### Boarding notes and videos

- [ameblo.jp](https://ameblo.jp/mitsu-money-beauty/entry-12250023018.html?frm=theme)
- [Costa Cruises - My First Ever Cruise Experience \| Cruise Nation](https://www.cruisenation.com/blog/costa-cruises-diadema)
- [Primeiro Cruzeiro no Costa Diadema: Documentos, Valores e Dicas](https://www.viajelivre.com.br/blog/cruzeiro/cruzeiro)
- [Costa Diadema Cruise: A Complete Review](https://traveladdictslife.com/costa-cruises/diadema/costa-diadema-cruise-review/)
- [My Experience with the Cruise Ship Costa Diadema](https://www.readyfortakeoff.se/en_GB/my-experience-with-the-cruise-ship-costa-diadema/)

### External sites and sources

- [cruisetotravel.com](https://www.cruisetotravel.com/2026/05/26/costa-diadema-begins-2026-summer-season-in-northern-europe/)
- [cruiseindustrynews.com](https://cruiseindustrynews.com/cruise-news/2025/06/costa-cruises-reveals-2026-27-deployment/)
- [wikidata.org](https://www.wikidata.org/wiki/Q3208908#P458)
- [en.wikipedia.org](https://en.wikipedia.org/wiki/Costa_Diadema)
- [cruise-sisters.de](https://cruise-sisters.de/en/culinary-round-trip-in-the-restaurants-on-board-the-costa-diadema/)
- [cruise-sisters.de](https://cruise-sisters.de/en/top-10-activities-on-board-the-costa-diadema/)
- [unoceandecroisieres.com](https://www.unoceandecroisieres.com/compagnies-de-croisieres/costa-croisieres/vie-a-bord/restauration/sushino-at-costa)
- [oggiabordo.com](https://www.oggiabordo.com/post/costa-drinks)
- [champagneliving.net](https://champagneliving.net/samsara-spa/)
- [cruisemummy.co.uk](https://www.cruisemummy.co.uk/costa-cruise-drink-packages/)
- [cruisingjournal.com](https://www.cruisingjournal.com)
- [costacruises.com](https://www.costacruises.com/useful-links/service-charges.html)
- [cruiseindustrynews.com](https://cruiseindustrynews.com/cruise-news/2026/05/costa-diadema-arrives-in-northern-europe-for-summer-season/)
- [taoticket.com](https://www.taoticket.com/en_US/port-cruise/c/costa-cruises/savona/november)
- [grokipedia.com](https://grokipedia.com/page/Costa_Diadema)
- [costacruises.eu](https://www.costacruises.eu/content/dam/costa/costa-asset/costa-business/MICE%2022%20EN.pdf)
- [costa-cruise.jp (Language: Japanese)](https://costa-cruise.jp/)
- [costacruises.co.uk](https://www.costacruises.co.uk/useful-links/useful-info.html)
- [costacruises.com](https://www.costacruises.com/useful-links/useful-info.html)
- [costa-cruise.jp (Language: Japanese)](https://costa-cruise.jp/faq/)
- [costacruises.com](https://www.costacruises.com/experience/new-rates.html)
- [costacruises.com](https://www.costacruises.com/experience/comfort-plus.html)
- [sightdoing.net](https://sightdoing.net/costa-cruise-onboard-costs/)
- [travelmarketreport.com](https://www.travelmarketreport.com/cruises/articles/costa-cruises-introduces-simplified-rates-for-north-american-market)
- [travelagentcentral.com](https://www.travelagentcentral.com/cruises/costa-cruises-streamlines-fare-structure)
- [emmacruises.com](https://emmacruises.com/costa-cruises-laundry-services-packages-price-lists-and-alternatives/)
- [icruise.com](https://www.icruise.com/cruise-lines/costa-cruises-smoking-policy.html)
- [mycosta.costacruises.eu](https://mycosta.costacruises.eu/web-checkin.html)
- [View on VesselFinder (IMO 9636888)](https://www.vesselfinder.com/vessels/details/9636888)

### Related Cruise Pitta pages

- [See the ship’s size](https://cruise-pitta.com/en/ship/costa-diadema/scale)
- [8-Night South America & Antarctica Cruise from Buenos Aires](https://cruise-pitta.com/route/costa-diadema-8n-buenos-aires)
- [7-Night Northern Europe & Fjords Cruise from Kiel](https://cruise-pitta.com/route/costa-diadema-7n-kiel)
- [7-Night Northern Europe & Fjords Cruise from Copenhagen](https://cruise-pitta.com/route/costa-diadema-7n-copenhagen)
- [26-Night Ocean Crossings & World Voyages Cruise from Santos to Kiel](https://cruise-pitta.com/route/costa-diadema-26n-santos-to-kiel)

## Current position (external site)

[View on VesselFinder (IMO 9636888)](https://www.vesselfinder.com/vessels/details/9636888)

External site. Position information has not been checked by Cruise Pitta.

Checked: none (unverified)

## Cruise stories and videos on external sites

5 links

These are articles and videos by other publishers, not Cruise Pitta. Their content is their own and has not been reviewed by us. Links open in a new tab.

| Title | Kind | Language | Disclosure | Site | Sailed | Link checked | Link treatment |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [ameblo.jp](https://ameblo.jp/mitsu-money-beauty/entry-12250023018.html?frm=theme) | Personal blog | Japanese | — | ameblo.jp | — | Checked: 2026-10-04 | nofollow (nofollow noopener noreferrer) / — |
| [Costa Cruises - My First Ever Cruise Experience \| Cruise Nation](https://www.cruisenation.com/blog/costa-cruises-diadema) | Article | English | — | cruisenation.com | — | Checked: 2026-10-04 | follow (noopener noreferrer) / — |
| [Primeiro Cruzeiro no Costa Diadema: Documentos, Valores e Dicas](https://www.viajelivre.com.br/blog/cruzeiro/cruzeiro) | Personal blog | PT | — | viajelivre.com.br | 2025-01-05 | Checked: 2026-10-04 | nofollow (nofollow noopener noreferrer) / — |
| [Costa Diadema Cruise: A Complete Review](https://traveladdictslife.com/costa-cruises/diadema/costa-diadema-cruise-review/) | Personal blog | English | — | traveladdictslife.com | — | Checked: 2026-10-05 | nofollow (nofollow noopener noreferrer) / — |
| [My Experience with the Cruise Ship Costa Diadema](https://www.readyfortakeoff.se/en_GB/my-experience-with-the-cruise-ship-costa-diadema/) | Personal blog | English | — | readyfortakeoff.se | — | Checked: 2026-10-05 | nofollow (nofollow noopener noreferrer) / — |

English text in preparation.

## About this data

- Ship detail verification: Source unverified

Checked: 2026-07-03

[Official ship page](https://www.costacruises.com/fleet/diadema.html)

Photo: Ein Dahmer / CC BY-SA 4.0 / https://commons.wikimedia.org/wiki/File:COSTA_DIADEMA_4417.jpg

## Sources

- official: costacruises.com — https://www.costacruises.com/fleet/diadema.html
- secondary: cruisetotravel.com — https://www.cruisetotravel.com/2026/05/26/costa-diadema-begins-2026-summer-season-in-northern-europe/
- secondary: cruiseindustrynews.com — https://cruiseindustrynews.com/cruise-news/2025/06/costa-cruises-reveals-2026-27-deployment/
- encyclopedia: wikidata.org — https://www.wikidata.org/wiki/Q3208908#P458
- encyclopedia: en.wikipedia.org — https://en.wikipedia.org/wiki/Costa_Diadema
- secondary: cruise-sisters.de — https://cruise-sisters.de/en/culinary-round-trip-in-the-restaurants-on-board-the-costa-diadema/
- secondary: cruise-sisters.de — https://cruise-sisters.de/en/top-10-activities-on-board-the-costa-diadema/
- secondary: unoceandecroisieres.com — https://www.unoceandecroisieres.com/compagnies-de-croisieres/costa-croisieres/vie-a-bord/restauration/sushino-at-costa
- secondary: oggiabordo.com — https://www.oggiabordo.com/post/costa-drinks
- secondary: champagneliving.net — https://champagneliving.net/samsara-spa/
- secondary: cruisemummy.co.uk — https://www.cruisemummy.co.uk/costa-cruise-drink-packages/
- secondary: cruisingjournal.com — https://www.cruisingjournal.com
- official: costacruises.com — https://www.costacruises.com/useful-links/service-charges.html
- secondary: cruiseindustrynews.com — https://cruiseindustrynews.com/cruise-news/2026/05/costa-diadema-arrives-in-northern-europe-for-summer-season/
- secondary: taoticket.com — https://www.taoticket.com/en_US/port-cruise/c/costa-cruises/savona/november
- secondary: grokipedia.com — https://grokipedia.com/page/Costa_Diadema

Source: Wikipedia “[Costa Diadema](https://en.wikipedia.org/wiki/Costa_Diadema)” ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))