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Lagoon 43
Designer: Van Peteghem/Lauriot Prévost  ·  Builder: Lagoon Catamaran  ·  First built: 2025
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About the Lagoon 43

French catamaran builder Lagoon developed the 43 as part of their popular cruising multihull lineup, targeting sailors seeking comfortable bluewater passage-making capabilities combined with spacious onboard living. This sailing catamaran represents Lagoon's commitment to creating vessels that prioritize interior volume and stability over outright performance. Built for extended cruising rather than racing, the Lagoon 43 excels in coastal and offshore passages where comfort takes precedence over speed. The twin-hull configuration provides exceptional stability in various sea conditions, reducing the heel that characterizes monohull sailing. This makes the boat particularly appealing to families or couples planning long-distance voyages. Lagoon's design philosophy emphasizes practical cruising features, and the 43 typically incorporates generous deck spaces, protected cockpit areas, and straightforward sail handling systems. The catamaran's wide beam creates impressive interior accommodations, often featuring multiple private cabins and bathrooms that rival much larger monohulls. While not built for competitive racing, the Lagoon 43 offers reliable passage-making abilities with good directional stability and manageable sail plans. The boat appeals to cruisers prioritizing comfort, space, and seaworthiness over pure sailing performance, making it well-suited for extended liveaboard cruising or charter operations.

Core Dimensions
LOA (Length Overall) 45.44 ft / 13.85 m
Beam 2,522.97 ft / 769.00 m
Max Draft 4.30 ft / 1.31 m
Displacement 30,644.25 lb / 13,900 kg
Sail Area (Reported) 1,130.21 ft² / 105.00 m²
Design & Construction
Hull Type Catamaran Twin Keel
Rigging Type Fractional Sloop
Construction GRP
Designer Van Peteghem/Lauriot Prévost
Builder Lagoon Catamaran
First Built 2025
Related Sailboats ["Boreal 44 2" · "J/45" · "Dufour 44" · "Swan 45" · "Sabre 452"]
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
18.54
How It Compares

vs. Dufour 44, J/45, Swan 45

This boat Similar boats
Dimensions
LOA
Lagoon 43 ★
45.4 ft
Dufour 44
45.6 ft
J/45
45.6 ft
Swan 45
45.4 ft
LWL
Lagoon 43 ★
Dufour 44
40.1 ft
J/45
39.0 ft
Swan 45
39.6 ft
Beam
Lagoon 43 ★
2.0 ft
Dufour 44
14.6 ft
J/45
14.1 ft
Swan 45
12.8 ft
Displacement
Lagoon 43 ★
30 lbs
Dufour 44
22 lbs
J/45
24 lbs
Swan 45
21 lbs
Ballast
Lagoon 43 ★
Dufour 44
6 lbs
J/45
10 lbs
Swan 45
8 lbs
Sail Area
Lagoon 43 ★
1 sq ft
Dufour 44
1 sq ft
J/45
989 sq ft
Swan 45
Performance
SA / Displacement (higher = more powerful)
Lagoon 43 ★
18.5
Dufour 44
21.7
J/45
17.2
Swan 45
Ballast / Disp (higher = stiffer)
Lagoon 43 ★
Dufour 44
J/45
41.7 %
Swan 45
39.7 %
Comfort Ratio (higher = more comfortable offshore)
Lagoon 43 ★
Dufour 44
23.4
J/45
35.9
Swan 45
Capsize Screening (lower = safer)
Lagoon 43 ★
Dufour 44
2.07
J/45
1.55
Swan 45
Displacement / Length (lower = lighter)
Lagoon 43 ★
Dufour 44
J/45
169
Swan 45
156
Hull Speed
Lagoon 43 ★
Dufour 44
8.5 kts
J/45
10.5 kts
Swan 45
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