$217/person$72/night
View DealShip comparison
Costa Diadema vs World Dream
Side-by-side cruise ship comparison. World Dream wins 7 of 7 scored categories.
At a glance
Quick Compare
Category
Costa Diadema
World Dream
Size
132,500 GT
151,300 GT
Passengers
3,724
3,400
Year built
2014
2017
Crew ratio
3.0 guests per crew
1.7 guests per crew
Space ratio
35.6 GT per guest
44.5 GT per guest
Decks
No data
No data
Length
306 m
335 m
From price
$217 pp
No data
The verdict
Comparison Verdict
World Dream is the larger vessel at 151,300 GT, 14% more than Costa Diadema's 132,500 GT. World Dream offers more personal space with a space ratio of 44.5 GT per passenger versus 35.6. Built in 2017, World Dream is 3 years newer, an advantage for travelers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | World Dream |
| Capacity | World Dream |
| Modernity | World Dream |
| Service | World Dream |
| Spaciousness | World Dream |
| Decks | No data |
| Length | World Dream |
| Fleet Power | World Dream |
Bottom line: World Dream leads 7–0 across our categories, strongest in Size. Choose World Dream for overall superiority; pick Costa Diadema if its strengths matter more to you.
Decide
Which Ship Is Right for You?
Choose World Dream if
- You want the newer ship (built 2017, 3 years newer)
- Size matters to you (151,300 GT)
- More crew per guest (1.7 guests per crew)
- More space per guest (44.5 GT per guest)
Prices
See Current Prices
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Fares
Sailing Prices
| Detail | Costa Diadema | World Dream |
|---|---|---|
| Cheapest | $217 pp | No sailings |
| Per night | $72 pp | No data |
| Departing | Oct 28 | No data |
| Duration | 3 nights | No data |
| 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.
