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Sagitta 30
Designer: Aage Utzon  ·  Builder: Royal System Yacht Yard (Den)  ·  First built: 1963
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About the Sagitta 30

Danish designer Aage Utzon created the Sagitta 30 as a robust cruising sailboat that exemplifies Scandinavian seaworthiness and craftsmanship. Built by Royal System Yacht Yard in Denmark from 1963 to 1991, this masthead sloop represents classic Northern European design philosophy with its emphasis on strength and seakeeping ability over pure speed. With its long keel configuration and transom-hung rudder, the Sagitta 30 delivers exceptional directional stability and tracking, making it an excellent choice for coastal cruising and moderate offshore passages. The substantial displacement of 9,260 pounds, combined with 4,100 pounds of ballast, creates a stiff, stable platform that handles heavy weather with confidence. The comfort ratio of 29.64 indicates good motion characteristics in a seaway, while the conservative capsize screening formula of 1.72 suggests solid offshore capability. The fiberglass construction and traditional proportions make this a practical cruiser for sailors seeking reliability over racing performance. With only 40 hulls produced during its 28-year production run, the Sagitta 30 remains a relatively rare find that appeals to experienced cruising sailors who value proven seaworthiness and European build quality over modern amenities.

Core Dimensions
LOA (Length Overall) 30.02 ft / 9.15 m
LWL (Waterline Length) 24.08 ft / 7.34 m
Beam 9.00 ft / 2.74 m
Max Draft 4.75 ft / 1.45 m
Displacement 9,260.00 lb / 4,200 kg
Ballast 4,100.00 lb / 1,860 kg
Ballast Type Lead
Sail Area (Reported) 383.00 ft² / 35.58 m²
Design & Construction
Hull Type Long keel w/trans. hung rudder
Rigging Type Masthead Sloop
Construction FG
Designer Aage Utzon
Builder Royal System Yacht Yard (DEN)
First Built 1963
Last Built 1991
Number Built 40
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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
 204
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
 13.94
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
 44.28
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
 296.07
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
 29.64
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
 1.72
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. 6.58 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
 1.52
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. 774.36 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. 13.94
Rig Dimensions
I (Foretriangle Height) 36.50 ft / 11.13 m
J (Foretriangle Base) 12.40 ft / 3.78 m
P (Mainsail Luff) 33.00 ft / 10.06 m
E (Mainsail Foot) 9.50 ft / 2.90 m
SA Fore 226.30 ft² / 21.02 m²
SA Main 156.75 ft² / 14.56 m²
SA Total (100%) 383.05 ft² / 35.59 m²
Est. Forestay Length 38.55 ft / 11.75 m
Engine & Accommodations
Engine Make Watermota
Engine Model Sea Panther
Engine Type Gas
Horsepower 29
Fuel Capacity 11 gals / 42 L
Water Capacity 23 gals / 87 L
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