Side-by-side cruise ship comparison · Updated January 2026
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across 5 categories
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)
Diamond Princess
Regal Princess
Gross Tonnage
Diamond Princess
115,875 GT
Regal Princess
142,714 GT
Length
Diamond Princess
290 m
Regal Princess
330 m
Beam
Diamond Princess
38 m
Regal Princess
38 m
Passengers
Diamond Princess
2,670
Regal Princess
3,560
Crew
Diamond Princess
1,100
Regal Princess
1,346
Decks
Diamond Princess
—
Regal Princess
—
Year Built
Diamond Princess
2,004
Regal Princess
2,014
Space Ratio
Diamond Princess
43.4 GT/pax
Regal Princess
40.1 GT/pax
Passenger:Crew Ratio
Diamond Princess
2.43 :1
Regal Princess
2.64 :1
| Specification | Diamond Princess | Regal Princess |
|---|---|---|
| Overview | ||
| Cruise Line | Princess Cruises | Princess Cruises |
| Class | Grand Class | Royal Class |
| Status | active | active |
| Year Built | 2,004 | 2,014Winner |
| Dimensions | ||
| Gross Tonnage | 115,875 GT | 142,714 GTWinner |
| Length | 290 m | 330 mWinner |
| Beam | 38 m | 38 m |
| Draft | ||
| Capacity | ||
| Passengers | 2,670 | 3,560Winner |
| Crew | 1,100 | 1,346Winner |
| Key Ratios | ||
| Space Ratio | 43.4 GT/paxWinner | 40.1 GT/pax |
| Passenger:Crew Ratio | 2.43:1Winner | 2.64:1 |
| Build | ||
| Builder | MHI Nagasaki | Fincantieri |
| Flag | Bermuda | Bermuda |
| IMO Number | 9228186 | 9584724 |
Regal Princess is the significantly larger vessel at 142,714 GT — 23% more than Diamond Princess's 115,875 GT. Built in 2014, Regal Princess is 10 years newer — an advantage for travellers seeking modern amenities and design. Diamond Princess edges ahead in service with a passenger-to-crew ratio of 2.4:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Regal Princess |
| Capacity | Regal Princess |
| Modernity | Regal Princess |
| Service | Diamond Princess |
| Spaciousness | Diamond Princess |
Bottom line: Regal Princess wins more categories (3 vs 2), making it the stronger all-round choice based on current data.
Diamond Princess
Well-suited for cruise newcomers
43 GT/pax means plenty of quiet space
Good value for money
Good range of onboard options
Regal Princess
Well-suited for cruise newcomers
Large 3,560-guest capacity offers competitive pricing
3,560 passengers means tons of activities
40 GT/pax means plenty of quiet space
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
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9.5 mWinner |
8.5 m |
| Decks | — | — |
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