Size
Based on gross tonnage and length
Capacity
Based on passengers and crew
Modernity
Based on year built
Service
Based on passenger-to-crew ratio (lower is better)
Spaciousness
Based on gross tonnage per passenger (higher is better)
AIDACosma
Oasis of the Seas
Gross Tonnage
AIDACosma
183,858 GT
Oasis of the Seas
225,282 GT
Length
AIDACosma
337 m
Oasis of the Seas
362 m
Beam
AIDACosma
42 m
Oasis of the Seas
60 m
Passengers
AIDACosma
5,200
Oasis of the Seas
6,780
Crew
AIDACosma
1,550
Oasis of the Seas
2,165
Decks
AIDACosma
—
Oasis of the Seas
—
Year Built
AIDACosma
2,022
Oasis of the Seas
2,009
Space Ratio
AIDACosma
35.4 GT/pax
Oasis of the Seas
33.2 GT/pax
Passenger:Crew Ratio
AIDACosma
3.35 :1
Oasis of the Seas
3.13 :1
| Specification | AIDACosma | Oasis of the Seas |
|---|---|---|
| Overview | ||
| Cruise Line | AIDA Cruises | Royal Caribbean International |
| Class | Helios Class | Oasis Class |
| Status | active | active |
| Year Built | 2,022Winner | 2,009 |
| Dimensions | ||
| Gross Tonnage | 183,858 GT | 225,282 GTWinner |
| Length | 337 m | 362 mWinner |
| Beam | 42 m | 60 mWinner |
| Capacity | ||
| Passengers | 5,200 | 6,780Winner |
| Crew | 1,550 | 2,165Winner |
| Key Ratios | ||
| Space Ratio | 35.4 GT/paxWinner | 33.2 GT/pax |
| Passenger:Crew Ratio | 3.35:1 | 3.13:1Winner |
| Build | ||
| Builder | Meyer Werft | STX Finland |
| Flag | Italy | Bahamas |
| IMO Number | 9781865 | 9383936 |
Oasis of the Seas is the significantly larger vessel at 225,282 GT — 23% more than AIDACosma's 183,858 GT. Built in 2022, AIDACosma is 13 years newer — an advantage for travellers seeking modern amenities and design. Oasis of the Seas edges ahead in service with a passenger-to-crew ratio of 3.1:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Oasis of the Seas |
| Capacity | Oasis of the Seas |
| Modernity | AIDACosma |
| Service | Oasis of the Seas |
| Spaciousness | AIDACosma |
Bottom line: Oasis of the Seas wins more categories (3 vs 2), making it the stronger all-round choice based on current data.
AIDACosma
Large 5,200-guest capacity offers competitive pricing
5,200 passengers means tons of activities
Built in 2022 with modern facilities — great for a first cruise
Comfortable atmosphere for two
Oasis of the Seas
Large 6,780-guest capacity offers competitive pricing
6,780 passengers means tons of activities
Well-suited for cruise newcomers
Comfortable atmosphere for two
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
We may earn a commission from partner bookings at no extra cost to you.
| Draft | 8.6 m | 9.3 mWinner |
| Decks | — | — |
