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Nauticat 35
Designer: Kaj Gustafsson  ·  Builder: Siltala Yachts (Finland)  ·  First built: 1986
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About the Nauticat 35

Finnish boatbuilder Siltala Yachts introduced this capable motorsailer in 1986, combining the renowned Scandinavian tradition of sturdy construction with Kaj Gustafsson's thoughtful design philosophy. Built with fiberglass construction and featuring a traditional long keel configuration, this vessel exemplifies the Northern European approach to serious cruising boats designed for challenging conditions. With its masthead sloop rig and substantial displacement of 16,500 pounds anchored by 5,150 pounds of ballast, the design prioritizes seaworthiness and comfort over racing performance. The impressive comfort ratio of 32.19 reflects the boat's motion characteristics in seaways, while the conservative capsize screening formula of 1.78 indicates excellent stability for offshore passages. The generous beam of 11.33 feet provides substantial interior volume and initial stability, complemented by moderate draft that allows access to a variety of anchorages. The 43-horsepower engine gives this motorsailer respectable auxiliary power, particularly valuable when dealing with challenging weather or tight maneuvering situations. This design suits serious cruising sailors who value comfort, safety, and the ability to carry substantial stores for extended voyages. Whether coastal cruising or crossing oceans, the boat's conservative design parameters and solid Finnish construction provide confidence in demanding conditions.

Core Dimensions
LOA (Length Overall) 34.92 ft / 10.64 m
LWL (Waterline Length) 29.67 ft / 9.04 m
Beam 11.33 ft / 3.45 m
Max Draft 5.50 ft / 1.68 m
Displacement 16,500.00 lb / 7,484 kg
Ballast 5,150.00 lb / 2,336 kg
Sail Area (Reported) 621.00 ft² / 57.69 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction FG
Designer Kaj Gustafsson
Builder Siltala Yachts (FINLAND)
First Built 1986
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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
 180
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
 15.39
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 31.21
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
 282.02
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
 32.19
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
 1.78
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. 7.30 kn
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. 1,201.14 pounds/inch
Engine & Accommodations
Engine Make Volvo
Engine Model 2003
Engine Type Diesel
Horsepower 43
Fuel Capacity 106 gals / 401 L
Water Capacity 132 gals / 500 L
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