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Imx 45
Designer: Niels Jeppesen  ·  Builder: X Boats  ·  First built: 2002
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About the Imx 45

Originally designed as a high-performance racing sailboat, the Imx 45 represents a compelling blend of speed and seaworthiness that has earned respect among serious sailors. This sleek 45-footer emerged from the design boards with racing DNA firmly embedded in its hull lines and sail plan, yet possesses the structural integrity needed for extended offshore passages. The boat's design philosophy centers around achieving maximum performance without sacrificing safety or comfort. Its modern underbody features clean lines optimized for speed through the water, while the cockpit layout reflects careful attention to both racing efficiency and crew comfort during longer voyages. The Imx 45 has proven itself capable in both competitive racing environments and serious cruising applications. Sailors consistently praise the boat's responsive helm and predictable handling characteristics, making it an excellent choice for those seeking performance-oriented sailing without the extreme compromises often associated with pure racing machines. The construction quality and attention to detail have helped establish a reputation for reliability, particularly important for sailors planning extended coastal cruising or offshore passages where dependability becomes paramount.

Core Dimensions
LWL (Waterline Length) 39.27 ft / 11.97 m
Beam 13.62 ft / 4.15 m
Max Draft 9.02 ft / 2.75 m
Displacement 20,062.07 lb / 9,100 kg
Ballast 9,105.09 lb / 4,130 kg
Sail Area (Reported) 1,384.24 ft² / 128.60 m²
Headroom 6.56 ft / 2.00 m
Design & Construction
Hull Type Fin w/bulb & spade rudder
Rigging Type Fractional Sloop
Construction FG w/Divinycell core
Designer Niels Jeppesen
Builder X Boats
First Built 2002
Last Built 2004
Owner Reviews

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
 -3
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
 30.11
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 2.01
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 8.4
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 4.36
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 1.0
Rig Dimensions
I (Foretriangle Height) 61.68
J (Foretriangle Base) 16.37
P (Mainsail Luff) 59.88
E (Mainsail Foot) 20.34
SA Fore 504.85
SA Main 608.98
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