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Irwin 35 Citation
Designer: Ted Irwin  ·  Builder: Irwin Yachts (Usa)  ·  First built: 1986
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About the Irwin 35 Citation

Built from 1986 by Irwin Yachts, this Ted Irwin-designed 35-footer represents solid American production boat building during the height of the cruising boom. With its moderate displacement of 11,500 pounds and substantial ballast ratio, the Citation strikes a practical balance between performance and stability that made it popular among coastal cruisers and weekend sailors. The masthead sloop rig and fin keel configuration with spade rudder provide responsive handling characteristics, while the generous beam of 11.46 feet creates spacious accommodations below. The boat's fiberglass construction follows Irwin's reputation for building sturdy, reliable vessels that could handle extended coastal cruising without breaking the budget. With a comfort ratio of 22.56, the Citation leans toward the sportier end of the cruising spectrum, offering more lively sailing characteristics than some heavier displacement boats of the era. The sail area to displacement ratio of 18.69 suggests adequate performance in light to moderate conditions, though like many production boats of its vintage, it benefits from full sails in lighter air. This design appeals to sailors seeking an affordable entry into serious coastal cruising, with enough room for a small family while maintaining manageable size for a couple to handle easily.

Core Dimensions
LOA (Length Overall) 35.42 ft / 10.80 m
LWL (Waterline Length) 28.54 ft / 8.70 m
Beam 11.46 ft / 3.49 m
Max Draft 6.50 ft / 1.98 m
Displacement 11,500.00 lb / 5,216 kg
Ballast 5,200.00 lb / 2,359 kg
Sail Area (Reported) 593.00 ft² / 55.09 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Ted Irwin
Builder Irwin Yachts (USA)
First Built 1986
Associations Irwin Facebook Group
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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
138
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
18.69
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
45.22
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
220.85
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
22.56
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
2.03
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. 7.16 kn
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
2.65
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. 1,168.65 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 18.69
Rig Dimensions
I (Foretriangle Height) 46.00 ft / 14.02 m
J (Foretriangle Base) 14.20 ft / 4.33 m
P (Mainsail Luff) 41.00 ft / 12.50 m
E (Mainsail Foot) 13.00 ft / 3.96 m
SA Fore 326.60 ft² / 30.34 m²
SA Main 266.50 ft² / 24.76 m²
SA Total (100%) 593.10 ft² / 55.10 m²
Est. Forestay Length 48.14 ft / 14.67 m
How It Compares

vs. Endeavour 35, Ericson 35 3, J/35

This boat Similar boats
Dimensions
LOA
Irwin 35 Citation ★
35.4 ft
Endeavour 35
35.4 ft
Ericson 35 3
35.5 ft
J/35
35.5 ft
LWL
Irwin 35 Citation ★
28.5 ft
Endeavour 35
29.5 ft
Ericson 35 3
28.9 ft
J/35
30.0 ft
Beam
Irwin 35 Citation ★
11.5 ft
Endeavour 35
12.2 ft
Ericson 35 3
11.3 ft
J/35
12.0 ft
Displacement
Irwin 35 Citation ★
11 lbs
Endeavour 35
13 lbs
Ericson 35 3
13 lbs
J/35
10 lbs
Ballast
Irwin 35 Citation ★
5 lbs
Endeavour 35
5 lbs
Ericson 35 3
5 lbs
J/35
4 lbs
Sail Area
Irwin 35 Citation ★
593 sq ft
Endeavour 35
678 sq ft
Ericson 35 3
597 sq ft
J/35
590 sq ft
Performance
PHRF Rating (lower = faster)
Irwin 35 Citation ★
138 s/nm
Endeavour 35
192 s/nm
Ericson 35 3
J/35
72 s/nm
SA / Displacement (higher = more powerful)
Irwin 35 Citation ★
18.7
Endeavour 35
19.4
Ericson 35 3
17.3
J/35
19.9
Ballast / Disp (higher = stiffer)
Irwin 35 Citation ★
45.2 %
Endeavour 35
42.5 %
Ericson 35 3
40.0 %
J/35
40.0 %
Comfort Ratio (higher = more comfortable offshore)
Irwin 35 Citation ★
22.6
Endeavour 35
23.5
Ericson 35 3
25.7
J/35
27.5
Capsize Screening (lower = safer)
Irwin 35 Citation ★
2.03
Endeavour 35
2.06
Ericson 35 3
1.93
J/35
1.68
Displacement / Length (lower = lighter)
Irwin 35 Citation ★
220
Endeavour 35
230
Ericson 35 3
241
J/35
130
Hull Speed
Irwin 35 Citation ★
7.2 kts
Endeavour 35
7.3 kts
Ericson 35 3
7.2 kts
J/35
8.5 kts
Speed Number (higher = faster)
Irwin 35 Citation ★
2.7
Endeavour 35
2.6
Ericson 35 3
2.3
J/35
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