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
Island Princess
Gross Tonnage
Diamond Princess
115,875 GT
Island Princess
91,627 GT
Length
Diamond Princess
290 m
Island Princess
294 m
Beam
Diamond Princess
38 m
Island Princess
32 m
Passengers
Diamond Princess
2,670
Island Princess
1,970
Crew
Diamond Princess
1,100
Island Princess
900
Decks
Diamond Princess
—
Island Princess
—
Year Built
Diamond Princess
2,004
Island Princess
2,003
Space Ratio
Diamond Princess
43.4 GT/pax
Island Princess
46.5 GT/pax
Passenger:Crew Ratio
Diamond Princess
2.43 :1
Island Princess
2.19 :1
| Specification | Diamond Princess | Island Princess |
|---|---|---|
| Overview | ||
| Cruise Line | Princess Cruises | Princess Cruises |
| Class | Grand Class | Coral Class |
| Status | active | active |
| Year Built | 2,004Winner | 2,003 |
| Dimensions | ||
| Gross Tonnage | 115,875 GTWinner | 91,627 GT |
| Length | 290 m | 294 mWinner |
| Beam | 38 mWinner | |
| Capacity | ||
| Passengers | 2,670Winner | 1,970 |
| Crew | 1,100Winner | 900 |
| Key Ratios | ||
| Space Ratio | 43.4 GT/pax | 46.5 GT/paxWinner |
| Passenger:Crew Ratio | 2.43:1 | 2.19:1Winner |
| Build | ||
| Builder | MHI Nagasaki | Chantiers de l'Atlantique |
| Flag | Bermuda | Bermuda |
| IMO Number | 9228186 | 9187887 |
Diamond Princess is the significantly larger vessel at 115,875 GT — 26% more than Island Princess's 91,627 GT. Island Princess edges ahead in service with a passenger-to-crew ratio of 2.2:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Diamond Princess |
| Capacity | Diamond Princess |
| Modernity | Diamond Princess |
| Service | Island Princess |
| Spaciousness | Island Princess |
Bottom line: Diamond 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
Island Princess
47 GT/pax means plenty of quiet space
Well-suited for cruise newcomers
Premium onboard experience
Good range of onboard options
Free cancellation on most rooms
Bundle & save on your cruise trip
Medical, trip cancellation & luggage cover
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32 m |
| Draft | 9.5 mWinner | 8 m |
| Decks | — | — |
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