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Schock 22
Designer: Wendell H. Calkins  ·  Builder: W. D. Schock Corp.(Usa)  ·  First built: 1960
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About the Schock 22

Designed by Wendell H. Calkins and built by W. D. Schock Corp., this compact 22-footer represents early fiberglass construction from 1960, with only 26 hulls produced during its limited production run. The boat's fractional sloop rig and keel/centerboard configuration create an interesting hybrid design that offers both shallow-water versatility and sailing performance. With a displacement of 2,100 pounds and 715 pounds of ballast, the Schock 22 strikes a balance between portability and stability. The generous beam of 7.50 feet provides good initial stability and interior volume for a boat this size, while the 4.17-foot draft allows access to shoal waters when the centerboard is raised. The 245 square feet of sail area delivers respectable performance with a SA/Displacement ratio of 23.96, indicating lively sailing characteristics. The comfort ratio of 10.75 suggests this is primarily a daysailer rather than a cruising boat, while the capsize screening formula of 2.35 indicates reasonable stability for protected waters. Best suited for coastal daysailing, club racing, and weekend adventures, the Schock 22 offers an accessible entry point into keelboat sailing with the added versatility of centerboard shallow-water capability.

Core Dimensions
LOA (Length Overall) 22.00 ft / 6.71 m
LWL (Waterline Length) 20.00 ft / 6.10 m
Beam 7.50 ft / 2.29 m
Max Draft 4.17 ft / 1.27 m
Min Draft 2.17 ft / 0.66 m
Displacement 2,100.00 lb / 953 kg
Ballast 715.00 lb / 324 kg
Sail Area (Reported) 245.00 ft² / 22.76 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Fractional Sloop
Construction FG
Designer Wendell H. Calkins
Builder W. D. Schock Corp.(USA)
First Built 1960
Number Built 26
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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
 267
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
 23.96
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
 34.05
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
 117.19
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
 10.75
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
 2.35
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. 5.99 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
 4.95
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. 535.97 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. 23.99
Rig Dimensions
I (Foretriangle Height) 22.50 ft / 6.86 m
J (Foretriangle Base) 8.70 ft / 2.65 m
P (Mainsail Luff) 25.20 ft / 7.68 m
E (Mainsail Foot) 11.70 ft / 3.57 m
SA Fore 97.88 ft² / 9.09 m²
SA Main 147.42 ft² / 13.70 m²
SA Total (100%) 245.30 ft² / 22.79 m²
Est. Forestay Length 24.12 ft / 7.35 m
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