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Ship comparison

Costa Diadema vs MSC Seashore

The verdict

Which should you choose?

Costa Diadema is a mega Costa Cruises ship carrying 4,947 passengers, in service since 2014. MSC Seashore is a mega MSC Cruises ship carrying 4,540 passengers, in service since 2021.

Choose Costa Diadema if you want more of a party, a more family-friendly ship or better-rated dining: it outscores MSC Seashore for party (7.0 vs 4.0), family friendly (8.0 vs 7.0) and dining (7.0 vs 6.0) in Cruiseable’s Bliss scores.

Choose MSC Seashore if you want a lower starting fare, a more active cruise or more space per passenger: it outscores Costa Diadema for active (8.0 vs 6.0) in Cruiseable’s Bliss scores, its cruises start from $179 (vs $490) and it has 37.3 gross tons per passenger (vs 26.8).

Side by side

Specifications

marks the better figure where more, or less, is plainly better.

Costa DiademaMSC Seashore
Cruise line Costa Cruises MSC Cruises
Ship size Mega Mega
Maiden voyagenewer highlighted 2014 2021 (better)
Gross tonnage 132,500 169,400
Passengers 4,947 4,540
Crew 1,253 1,648
Passengers per crew memberfewer is better 3.9 2.8 (better)
Space per passengergross tons per passenger; more is roomier 26.8 37.3 (better)
Decks 20 20
Length 1,004 ft 1,112 ft
Beam 122 ft 134 ft
Speed — 25 mph
Cruiseable ratingout of 10 8 / 10 8 / 10
Cruises on sale 73 55
Upcoming sailings 143 314
Cruise lengths 2 to 27 nights 2 to 22 nights
Fares fromlower highlighted $490 $179 (better)

Bliss scores

How they rate, out of 10

Cruiseable rates ships out of 10 on ten parts of a cruise holiday. Costa Diadema leads on 4 of the ten, MSC Seashore on 2, with 4 level.

  • Active Costa Diadema: 6.0 MSC Seashore: 8.0
  • Adventure & nature Costa Diadema: 6.0 MSC Seashore: 5.0
  • Cultural Costa Diadema: 6.0 MSC Seashore: 7.0
  • Dining Costa Diadema: 7.0 MSC Seashore: 6.0
  • Entertainment Costa Diadema: 8.0 MSC Seashore: 8.0
  • Family friendly Costa Diadema: 8.0 MSC Seashore: 7.0
  • Party Costa Diadema: 7.0 MSC Seashore: 4.0
  • Romantic Costa Diadema: 6.0 MSC Seashore: 6.0
  • Spa & fitness Costa Diadema: 6.0 MSC Seashore: 6.0
  • Staterooms Costa Diadema: 6.0 MSC Seashore: 6.0

MSC Cruises

MSC Seashore

MSC Seashore launched in August 2021 as the latest in a line of mega-size smartships from MSC Cruises. The ship holds 4,540 passengers at double capacity and 5,179 people at maximum capacity.

Highlights

  • A mall-style shopping area that is 72% bigger than that of her sister ships, including a massive New York-themed piazza
  • Hall of Games with a full-size F1 simulator, an immersive XD cinema with 3D glasses and a virtual-reality rafting simulator
  • The aft pool is an infinity pool that extends to the end of the ship and offers uninterrupted sea views
  • The Aurea Spa has a hair and nail salon, a barber shop — and 21 treatment rooms

Sailing now

55 cruises on sale, from $179.

Questions

Costa Diadema or MSC Seashore?

Which is bigger, Costa Diadema or MSC Seashore?

MSC Seashore is bigger at 169,400 gross tons, against 132,500 gross tons for Costa Diadema. Costa Diadema carries 4,947 passengers and MSC Seashore carries 4,540.

Which ship is newer, Costa Diadema or MSC Seashore?

MSC Seashore is newer, with a maiden voyage in 2021 against 2014 for Costa Diadema.

Which has more space per passenger?

MSC Seashore, with 37.3 gross tons per passenger against 26.8 on Costa Diadema. The higher the figure, the more ship there is for each guest.

Which has more crew per passenger?

MSC Seashore, with one crew member for every 2.8 passengers against one for every 3.9 on Costa Diadema.

Which is better for families?

Costa Diadema scores higher for family friendliness in Cruiseable’s Bliss scores: 8.0 out of 10, against 7.0 for MSC Seashore.

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