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Sailboat Specifications

X4

Fractional Sloop · Fin W/Bulb & Spade Rudder

Designed by Niels Jeppesen · Built by X-Yachts · First built 2019

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LOA 39.67 ft  ·  Beam 12.50 ft  ·  Displacement 17,857.00 lb  ·  Sail Area 818.06 ft²  ·  Fractional Sloop  ·  Fin W/Bulb & Spade Rudder
About the X4 Sailboat

Designed by the Danish yacht builder X-Yachts, the X4 sits within a lineage of performance-oriented sailboats that have earned a strong reputation among sailors who refuse to compromise between speed and comfort. X-Yachts has long been celebrated for producing boats with excellent build quality and responsive sailing characteristics, and the X4 continues that tradition. Well-suited for coastal cruising and spirited offshore passages, the X4 appeals to sailors who want a capable, well-mannered boat that rewards skilled helmsmanship without punishing beginners. The X4 reflects X-Yachts' hallmark philosophy of balancing performance with practicality, offering a hull form designed to generate good upwind and downwind performance across a range of conditions. Buyers often note the attention to detail in both the deck layout and interior finish, which speaks to the brand's Danish craftsmanship heritage. While detailed specifications may be limited, the X4's reputation within the X-Yachts family suggests a boat that will satisfy performance-minded cruisers looking for a reliable, engaging sailing experience. Prospective buyers are encouraged to consult an X-Yachts dealer for full specification details.

Dimensions & Specifications
LOA (Length Overall) 39.67 ft / 12.09 m
LWL (Waterline Length) 34.12 ft / 10.40 m
Beam 12.50 ft / 3.81 m
Max Draft 6.89 ft / 2.10 m
Displacement 17,857.00 lb / 8,100 kg
Ballast 6,724.00 lb / 3,050 kg
Sail Area (Reported) 818.06 ft² / 76.00 m²
Headroom 6.17 ft / 1.88 m
Design & Construction
Hull Type Fin w/bulb & spade rudder
Rigging Type Fractional Sloop
Construction Epoxy/foam sand. w/E-glass
Designer Niels Jeppesen
Builder X-Yachts
First Built 2019
Related Sailboats J/39 · X 402 · Contest 40S · Hanse 400 2008 2014 · Centurion 40
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Frequently Asked Questions

What is the X4's sail area to displacement ratio?

The X4 has a Sail Area to Displacement ratio (SA/D) of 19.23. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the X4's comfort ratio?

The X4 has a Ted Brewer Comfort Ratio of 26.69. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the X4 safe for offshore sailing?

The X4 has a Capsize Screening Formula value of 1.92. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the X4?

The theoretical hull speed of the X4 is 7.83 knots, calculated from its waterline length.

How much does a X4 weigh?

The X4 has a displacement of 17,857.00 lb and a length overall (LOA) of 39.67 ft.

Who designed the X4?

The X4 was designed by Niels Jeppesen, first built in 2019.