September 26, 2026
11-Night Mediterranean Cruise
Departing from Piraeus
From
$15,999
Price / day
$1,454
SeaDream I|Blue Zephyr
SeaDream I vs Blue Zephyr
Compare ship age, size, passenger capacity, itineraries and upcoming cruise prices.
SeaDream I
SeaDream Yacht Club
Check prices on CruiseDirectVS
Newer Ship
Blue Zephyr
Built in 1991
7 years newer
Lower Price Per Day
Both ships are the same
More Spacious Ship
Both ships are the same
SeaDream I vs Blue Zephyr: Quick Comparison
Blue Zephyr is the newer ship in this comparison. Built in 1991, it is 7 years newer than SeaDream I, which entered service in 1984. SeaDream I is approximately 3% larger by gross tonnage at 4,333 GT. SeaDream I has upcoming sailings in Mediterranean. The sailings shown cover different itineraries, so the price per day figures are not a like-for-like comparison. Cruise fares vary significantly by itinerary, departure date and cabin availability, so any price difference should be treated as a snapshot rather than a permanent gap.
Ship Comparison
| Spec | SeaDream I | Blue Zephyr |
|---|---|---|
| Year Built | 1984 | 1991Newer |
| Gross Tonnage | 4,333 GT | 4,200 GT |
| Passenger Capacity | 110 | — |
| Space per Passenger | 39.4 GT | — |
| Length | 105 m | 90 m |
| Decks | — | — |
| Cabins | — | — |
Key Differences: SeaDream I vs Blue Zephyr
Age
Blue Zephyr was built in 1991, making it 7 years newer than SeaDream I, which was built in 1984.
Size
At 4,333 GT, SeaDream I is approximately 3% larger by gross tonnage than Blue Zephyr at 4,200 GT.
Itineraries
The upcoming sailings shown for SeaDream I (Mediterranean) and Blue Zephyr currently cover different regions or departure ports.
Compare Ports of Call
SeaDream I
Greek Odyssey
- Departure Port
- Piraeus
- Region
- Mediterranean
- Nights
- 11
- Round Trip
- Yes
- Day 1 · Sep 26, 2026Piraeus
- Day 2 · Sep 27, 2026Milos
- Day 3 · Sep 28, 2026Ios Island
- Day 4 · Sep 29, 2026Santorini
- Day 5 · Sep 30, 2026Kusadasi
- Day 6 · Oct 1, 2026Patmos
- Day 7 · Oct 2, 2026Rhodes Town
- Day 8 · Oct 3, 2026Symi
- Day 9 · Oct 4, 2026Heraklion
- Day 10 · Oct 5, 2026Tinos
- Day 11 · Oct 6, 2026Mykonos
- Day 12 · Oct 7, 2026Mykonos
- Day 13 · Oct 8, 2026Kythnos
- Day 14 · Oct 9, 2026Piraeus
Dates are estimates based on the published departure date.
Upcoming Cruises & Prices
SeaDream I
October 11, 2026
6-Night Mediterranean Cruise
Departing from Piraeus
From
$7,700
Price / day
$1,283
Blue Zephyr
Prices shown are starting fares and may change.
Which Ship Is Cheaper?
SeaDream I
Average
$1,369 / day
VS
Blue Zephyr
Average
$0 / day
Cruise prices vary by departure date, itinerary, cabin type and availability.
Which Ship Should You Choose?
Choose SeaDream I if…
- You prefer the larger ship by gross tonnage.
- You want to sail in Mediterranean.
- Departing from Piraeus works for your plans.
- You do not place as much importance on sailing on a newer ship than Blue Zephyr.
Choose Blue Zephyr if…
- You prefer the newer ship.
SeaDream I vs Blue Zephyr: Final Comparison Summary
Newer
Blue Zephyr
Built in 1991
7 years newer
Bigger
SeaDream I
4,333 GT
3% larger by gross tonnage
Lower Price Per Day
Both ships are the same
- Blue Zephyr is 7 years newer.
- SeaDream I is 3% larger by gross tonnage.
- Passenger capacity is not available for both ships.
Frequently Asked Questions
Which is newer, SeaDream I or Blue Zephyr?
Blue Zephyr is newer. It was built in 1991, while SeaDream I was built in 1984, making Blue Zephyr 7 years newer.
Which is bigger, SeaDream I or Blue Zephyr?
SeaDream I is larger by gross tonnage. It measures approximately 4,333 GT compared with Blue Zephyr at 4,200 GT.
Where does SeaDream I sail?
The upcoming SeaDream I sailings currently listed cover Mediterranean, departing from Piraeus.
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SeaDream I
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