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Seven Seas Mariner vs Viking Neptune

Side-by-side cruise ship comparison · Updated January 2026

Seven Seas Mariner offers more personal space with a space ratio of 68.7 GT per passenger versus 51.4. Built in 2022, Viking Neptune is 21 years newer, an advantage for travellers seeking modern amenities and design. Seven Seas Mariner edges ahead in service with a passenger-to-crew ratio of 1.6:1, meaning more crew per guest.

Score: 25

Quick Compare

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Category
Seven Seas Mariner
Viking Neptune
Size
48,075 GT
47,800 GT
Passengers
700
930
Year Built
2001
2022
Crew Ratio
1:1.6
1:1.7
Space Ratio
68.7
51.4
Decks
Length
216m
229m
From Price
$11,399/pp
$4,899/pp

Comparison Verdict

Seven Seas Mariner offers more personal space with a space ratio of 68.7 GT per passenger versus 51.4. Built in 2022, Viking Neptune is 21 years newer, an advantage for travellers seeking modern amenities and design. Seven Seas Mariner edges ahead in service with a passenger-to-crew ratio of 1.6:1, meaning more crew per guest.

CategoryWinner
SizeViking Neptune
CapacityViking Neptune
ModernityViking Neptune
ServiceSeven Seas Mariner
SpaciousnessSeven Seas Mariner
DecksTie
LengthViking Neptune
Fleet PowerViking Neptune

Bottom line: Viking Neptune leads 5–2 across our categories, strongest in Size. Choose Viking Neptune for overall superiority; pick Seven Seas Mariner if Service matter more to you.

Which Ship Is Right for You?

Choose Seven Seas Mariner if...

  • Size matters to you (48,075 GT)
  • Better service ratio (1.6:1 crew ratio)
  • More space per guest (68.7 GT/pax)
Book Seas Mariner

Choose Viking Neptune if...

  • You want the newer ship (built 2022, 21yr newer)
  • More onboard variety (930 guests)
  • Save $6,500/person on sailings
Book Viking Neptune

You've compared the ships. Now see what they cost.

See Current Prices

Seven Seas Mariner

from $11,399/person

Book Seven Seas Mariner

Viking Neptune

from $4,899/person

Book Viking Neptune

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Sailing Prices

 Seven Seas MarinerViking Neptune
Cheapest$11,399 pp$4,899 pp
DepartingSep 18Sep 26
Duration11 nights7 nights
 View DealView Deal

Prices from Cruisebound. We may earn a commission at no extra cost to you.

Deep Dive

Upcoming Sailings

Upcoming Sailings on Seven Seas Mariner

Seven Seas Mariner sailing from Barcelona, SpainSpots going fast

11 Night Mediterranean - Western Cruise

Regent Seven Seas Mariner

Sep 18, 2026 · 11 nights

Mediterranean

$11,399/person$1,036/night
View Deal
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Upcoming Sailings on Viking Neptune

Viking Neptune sailing from Barcelona, SpainLeaves in 15 days

7 Night Iconic Western Mediterranean

Viking Ocean Viking Neptune

Sep 26, 2026 · 7 nights

Mediterranean

$4,899/person$700/night
View Deal
Viking Neptune sailing from Fusina (Venice), ItalyLeaves in 29 days

7 Night Venice,The Adriatic & Greece

Viking Ocean Viking Neptune

Oct 10, 2026 · 7 nights

Mediterranean

$5,899/person$843/night
View Deal
Viking Neptune sailing from Piraeus (Athens), Greece

7 Night Venice,The Adriatic & Greece

Viking Ocean Viking Neptune

Oct 27, 2026 · 7 nights

Mediterranean

$5,199/person$743/night
View Deal
Powered by Cruisebound

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Frequently Asked Questions

How is the comparison score calculated?

We compute scores across 8 categories using real spec data: gross tonnage, passenger capacity, crew capacity, year built, length, deck count, space ratio, and fleet power. Each category awards one point to the winning ship.

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; mass-market ships often fall in the 30-40 range.

What does the passenger-to-crew ratio mean?

Passengers per crew member. Lower is better, more staff per guest means better service. Luxury lines aim below 2:1; large mainstream ships may be 3-4:1.

Are the prices shown accurate?

Prices are sourced from Cruisebound and reflect real-time availability. They may change based on cabin type, date, and demand. Click through to see the latest fares.

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+ vessels, revalidated every 5 minutes via ISR. The "Updated" timestamp shows when records were last modified.