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lagoon 450 sportop 18

lagoon 450 sportop 18 review

Catamaran · 43 ft (13 m) · Victoria

GGetBoat EditorialReviewed September 14, 2026
4.2/ 5
expert score
Design4.4
Performance3.7
Comfort4.6
Handling4.0
Value4.0

Key specs

Builder
lagoon
Model
lagoon 450 sportop 18
Length
43 ft (13 m)
Guests
10
Cabins
4
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Verdict

The Lagoon 450 Sportop is a roomy, family-friendly cruising catamaran that prioritizes space and ease of use over sporty sailing. It offers strong livability, shallow draft, and reliable twin-engine handling, but performance is moderate compared with more sail-focused cats.

Pros

  • +Very spacious 45ft catamaran layout with wide beam and generous cockpit/saloon flow
  • +Shallow draft suits coastal cruising and anchorages
  • +Twin Yanmar diesel setup supports predictable close-quarters maneuvering
  • +Sportop configuration keeps the helm more integrated with the social spaces
  • +Well suited to charter use and multi-day family cruising

Cons

  • Not a performance-first catamaran; acceleration and pointing are modest
  • Wide beam can make marina berthing more demanding in tight spaces
  • Large interior volume can increase windage in gusty conditions
  • Heavier cruising orientation means less lively under sail than lighter designs

The Lagoon 450 Sportop is a 2018 cruising catamaran built around volume, visibility and easy access between helm and living areas. At roughly 45 feet overall with a very wide beam, it delivers the airy, open-plan feel that made the Lagoon line popular for charter and private cruising alike. The Sportop roofline gives a lower profile than a flybridge version while preserving a sociable helm arrangement.

On the water, the 450 Sportop is best described as steady and predictable rather than fast. Twin 45 hp Yanmar diesels and the catamaran hull form make docking and low-speed control practical, especially with the shallow draft, but sailing performance is oriented toward comfortable passage making instead of aggressive upwind work. Its size and windage can be felt in tight harbors and stronger breeze.

Inside, the model’s main strength is livability. Four-cabin layouts are well matched to private cruising or charter, and the broad saloon, cockpit and foredeck areas support relaxed onboard life for up to 10 guests. As a used 2018 boat, it generally represents solid value if the buyer wants space, simple systems and charter-friendly versatility rather than a highly athletic sailing platform.

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lagoon 450 sportop 18 review — expert verdict | GetBoat