$341/person$85/night
View DealShip comparison
Costa Diadema vs Viking Vela
Side-by-side cruise ship comparison. Costa Diadema wins 4 of 7 scored categories.
At a glance
Quick Compare
Category
Costa Diadema
Viking Vela
Size
132,500 GT
47,800 GT
Passengers
3,724
930
Year built
2014
2024
Crew ratio
3.0 guests per crew
1.7 guests per crew
Space ratio
35.6 GT per guest
51.4 GT per guest
Decks
No data
No data
Length
306 m
229 m
From price
$167 pp
$4,349 pp
The verdict
Comparison Verdict
Costa Diadema is the significantly larger vessel at 132,500 GT, 177% more than Viking Vela's 47,800 GT. Viking Vela offers more personal space with a space ratio of 51.4 GT per passenger versus 35.6. Built in 2024, Viking Vela is 10 years newer, an advantage for travelers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Costa Diadema |
| Capacity | Costa Diadema |
| Modernity | Viking Vela |
| Service | Viking Vela |
| Spaciousness | Viking Vela |
| Decks | No data |
| Length | Costa Diadema |
| Fleet Power | Costa Diadema |
Bottom line: Costa Diadema leads 4–3 across our categories, strongest in Size. Choose Costa Diadema for overall superiority; pick Viking Vela if its strengths matter more to you.
Decide
Which Ship Is Right for You?
Choose Costa Diadema if
- Size matters to you (132,500 GT)
- More onboard variety (3,724 guests)
- Lower fares per night (from $84 per person per night)
Choose Viking Vela if
- You want the newer ship (built 2024, 10 years newer)
- More crew per guest (1.7 guests per crew)
- More space per guest (51.4 GT per guest)
Prices
See Current Prices
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Fares
Sailing Prices
| Detail | Costa Diadema | Viking Vela |
|---|---|---|
| Cheapest | $167 pp | $4,349 pp |
| Per night | $84 pp | $621 pp |
| Departing | Oct 29 | Nov 3 |
| Duration | 2 nights | 7 nights |
| View sailing | View sailing |
Prices from Cruisebound, per person, for the sailing shown.
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FAQ
Frequently Asked Questions
How is the comparison score calculated?
We score 8 categories from spec data: size, capacity, modernity, service, spaciousness, decks, length and fleet power. Each category awards one point to the winning ship. A category where either ship has no data is marked No data and left out of the score.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40, and mass-market ships often fall between 30 and 40.
What does the passenger-to-crew ratio mean?
It is the number of guests for each crew member, shown as "3.0 guests per crew". Lower is better: more staff per guest usually means more attentive service. Luxury lines aim for fewer than 2 guests per crew, and large mainstream ships often carry 3 to 4.
Are the prices shown accurate?
Prices come from Cruisebound and are per person for the sailing shown. They change with cabin type, date and demand, so open the sailing to see the current fare.
Can I compare more than two ships?
Yes, up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ ships, and this page refreshes daily. An "Updated" date appears at the top when either ship's record changed in the last 30 days.
