Back to Search
San Juan 33S
Designer: David Pedrick  ·  Builder: Clark Boat Co. (Usa)  ·  First built: 1981
+ Add to Compare
About the San Juan 33S

Designed by David Pedrick and built by Clark Boat Company during a brief two-year production run from 1981 to 1982, this 33-footer represents a focused approach to performance-oriented sailing. The fin keel and spade rudder configuration, combined with a fractional sloop rig, creates a responsive boat that rewards active sailing techniques. With a displacement of 5,700 pounds and generous ballast ratio, the San Juan 33S strikes an appealing balance between stability and performance. The moderate beam of 7.95 feet and 5.5-foot draft make this boat well-suited for coastal waters while maintaining enough stability for confident offshore passages. Her sail area to displacement ratio of 23.34 indicates spirited performance in moderate winds, while the low comfort ratio of 18.94 suggests this design prioritizes sailing efficiency over spacious accommodations. The capsize screening formula of 1.78 falls well within acceptable ranges for offshore sailing, making this boat capable of extended coastal cruising and weekend racing. Despite the short production run, the 33S developed a reputation among sailors who appreciate responsive handling and clean sailing characteristics. This boat appeals most to sailors seeking performance-oriented coastal cruising with occasional offshore capability.

Core Dimensions
LOA (Length Overall) 33.10 ft / 10.09 m
LWL (Waterline Length) 27.80 ft / 8.47 m
Beam 7.95 ft / 2.42 m
Max Draft 5.50 ft / 1.68 m
Displacement 5,700.00 lb / 2,585 kg
Ballast 3,500.00 lb / 1,588 kg
Sail Area (Reported) 464.00 ft² / 43.11 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer David Pedrick
Builder Clark Boat Co. (USA)
First Built 1981
Last Built 1982
Owner Reviews

No owner reviews yet — be the first to share your experience with this boat.

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
 128
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
 23.34
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
 61.4
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
 118.44
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
 18.94
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. 7.07 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
 4.84
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. 789.69 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. 23.34
Rig Dimensions
I (Foretriangle Height) 35.10 ft / 10.70 m
J (Foretriangle Base) 11.48 ft / 3.50 m
P (Mainsail Luff) 40.03 ft / 12.20 m
E (Mainsail Foot) 13.12 ft / 4.00 m
SPL/TPS 12.00 ft / 3.66 m
SA Fore 201.47 ft² / 18.72 m²
SA Main 262.60 ft² / 24.40 m²
SA Total (100%) 464.07 ft² / 43.11 m²
Est. Forestay Length 36.93 ft / 11.26 m
Find a San Juan 33S For Sale
Y YachtWorld Brokerage listings S Sailboat Listings Sailboats only C Craigslist National search F Facebook Marketplace Local listings B boats.com Global marketplace