Sail area / displacement
How much sail the boat carries for its weight — its power in light air.
- not published: sail area
How it is worked out
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
1 / 10
The New Upgraded sailing pleasure — X-Yachts
Design
- Designer
- X-Yachts Design Team
Summary
- Length overall
- 43.4 ft
- Beam
- 13.1 ft
- Draft
- 6.1–8.2 ft
- Air draft
- 66.5 ft
- Displacement
- 20,723 lb
- Cabins
- 2–3
- Steering wheels
- 2
* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.
Best Suited For
- Bluewater Cruising
From the published figures: CE Category A · LOA 13.24 m · fresh water 340 L
- Liveaboard
From the published figures: LOA 13.24 m · 3 cabins · 2 heads · fresh water 340 L
Tags are derived from certified class, length, sail area, accommodation and tankage using the criteria described on the Sources page; an editor may add or remove one.
Sailing Ratios
Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.
Displacement / length
How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.
- 180· Moderate
How it is worked out
displacement (long tons) ÷ (0.01 × waterline length in ft)³
Ballast ratio
The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.
- 39· Moderate
How it is worked out
ballast ÷ displacement × 100
Comfort ratio
Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.
- 26.5· Coastal
How it is worked out
displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft
Capsize screening
A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.
- 1.91· Below 2
How it is worked out
beam (ft) ÷ (displacement as ft³ of seawater)^⅓
Hull speed
Roughly the speed a displacement hull reaches before it has to climb its own bow wave.
- 8.2 kn
How it is worked out
1.34 × √(waterline length in ft), in knots
Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.
Tanks
What the builder publishes about how fast, how strong and how much the boat carries.
Fuel and water on one scale: a tank twice the height holds twice as much.
- Fuel53 galWater90 gal
Design Category
Certified CE design category A (Ocean): the wind and waves the EU Recreational Craft Directive says this boat is designed to take.
- D
Sheltered waters
- Wind
- up to Beaufort 4
- Waves
- up to 0.3 m
- C
Inshore
- Wind
- up to Beaufort 6
- Waves
- up to 2 m
- B
Offshore
- Wind
- up to Beaufort 8
- Waves
- up to 4 m
- AThis boat
Ocean
- Wind
- above Beaufort 8
- Waves
- above 4 m
Design limits set by the EU Recreational Craft Directive (2013/53/EU), in significant wave height. A category covers the conditions of those below it. It is the limit the boat was designed to, not a promise that it is safe in any conditions within it — that judgement stays with the skipper.
A figure marked with a quote mark was read from the builder's page. Open it for the exact line, the page and the date.
Dimensions
- LOA
- 43.4 ft (13.24 m)
- Hull length
- 41.6 ft (12.67 m)
- LWL
- 37.2 ft (11.33 m)
- Beam
- 13.1 ft (3.99 m)
- Draft (min)
- 6.1 ft (1.85 m)
- Draft (max)
- 8.2 ft (2.5 m)
- Air draft
- 66.5 ft (20.26 m)
- Displacement
- 20,723 lb (9,400 kg)
- Ballast
- 8,157 lb (3,700 kg)
- Cabins
- 2–3
- Heads
- 1–2
- Berths
- —
Sail Plan
- Main sail
- —
- Jib
- —
- Genoa
- —
- Sail area
- —
- Downwind sail area
- —
- Rig type
- —
Engine and Tanks
- Engine
- 45 hp
- Engine count
- 1
- Engine manufacturer
- —
- Propulsion type
- shaft drive
- Fuel capacity
- 53 gal (200 L)
- Fresh water capacity
- 90 gal (340 L)
- Black water capacity
- —
Construction
- Mast material
- —
- Hull material
- Epoxy sandwich (GRP)
- Deck material
- —
- Keel type
- T keel
- Rudder type
- —
- Steering wheels
- 2
Builder's Own Figures
- Anchor weight
- 16 kg
- Anchor chain
- 25 m x 8 mm
- Holding tank
- 55 litres
Figures read fromthe builder's page
Brochure
Download the official X4.3 MkII brochure (PDF)About X-Yachts
Premium production
Danish builder of performance cruising sailboats, founded in 1979 and based in Haderslev, Denmark.
X-Yachts was established in Denmark in 1979 and through the 1980s designed and built winning IOR racers, which drew the cruising market to ask for fast, high-quality, comfortable yachts. The Performance Cruiser range was established in the 1990s, from the X-412 through the X-512, X-382, IMX 38, X-442, X-362, X-332, X-302, X-612 and X-482 to the X-562 of 1999; the IMX 40 racer opened the new millennium, the first X-73 of 2001 took the yard into luxury deep-water cruising, and the X-43 and X-46 of 2003 began a new generation, joined by the X-40, X-37 and X-50 in 2004 and the X-55 in 2006. The X-35 one-design of 2007 had two hundred boats racing worldwide as an ISAF class, followed by the X-41. The Xc 45, first of the Xcruising family, was European Yacht of the Year in 2009, joined by the Xc 42, 50 and 38 and today by the Xc 47; the Xp 44 opened the Xperformance generation in 2010, and in 2024 that range gave way to a new era with XRACING and the XR 41.
Visit brand pageThe X-Yachts Range
Every model X-Yachts publishes, by length — where this one sits in the range.
- X5.656.6 ft
- X4.9 MkII50.4 ft
- Xc 4749.9 ft
- XR 41 Race47.8 ft
- XR 41 Sport47.8 ft
- X4.6 MkII47.1 ft
- X4.3 MkII· this model43.4 ft
- X4.039.7 ft
Similar Yachts
Hallberg-Rassy
Hallberg-Rassy 400
LOA: 13.06 m
Sailing MonohullLiveaboardBluewater Cruising
Compare: X4.3 MkII vs Hallberg-Rassy 400Jeanneau
Sun Odyssey 410
LOA: 12.35 m
Sailing MonohullLiveaboardBluewater Cruising
Compare: X4.3 MkII vs Sun Odyssey 410Beneteau
Oceanis 37.1
LOA: 11.93 m
Sailing MonohullLiveaboardBluewater Cruising
Compare: X4.3 MkII vs Oceanis 37.1