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Wavelength 35
Designer: Paul Lindenberg  ·  Builder: W. D. Schock Corp.(Usa)  ·  First built: 1983
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About the Wavelength 35

Designed by Paul Lindenberg and built by W. D. Schock Corp from 1983 onwards, this 35-footer represents a thoughtful balance between performance and comfort for coastal cruising and club racing. The fin keel with spade rudder configuration provides responsive handling and good upwind performance, while the masthead sloop rig delivers manageable sail handling for small crews. With a displacement of 9,000 pounds and moderate beam of 10.70 feet, the Wavelength 35 offers a stable platform without being overly heavy. The sail area to displacement ratio of 23.82 suggests spirited performance in light to moderate conditions, making it well-suited for weekend cruising and casual racing on protected waters. The 6.70-foot draft provides good directional stability while still allowing access to many harbors and anchorages. The comfort ratio of 19.66 indicates relatively quick motion in seas, typical of boats optimized more for sailing performance than pure comfort. Combined with the capsize screening formula of 2.06, these numbers point to a boat best suited for coastal sailing rather than extended offshore passages. Schock's fiberglass construction was known for being solid and workmanlike, making these boats reliable choices for sailors seeking an affordable entry into mid-size sailing.

Core Dimensions
LOA (Length Overall) 35.00 ft / 10.67 m
LWL (Waterline Length) 28.00 ft / 8.53 m
Beam 10.70 ft / 3.26 m
Max Draft 6.70 ft / 2.04 m
Displacement 9,000.00 lb / 4,082 kg
Sail Area (Reported) 642.00 ft² / 59.64 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Paul Lindenberg
Builder W. D. Schock Corp.(USA)
First Built 1983
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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
 75
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
 23.82
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
 183.03
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
 19.66
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
 2.06
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. 7.09 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
 3.69
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. 1,070.50 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. 23.81
Rig Dimensions
I (Foretriangle Height) 49.00 ft / 14.94 m
J (Foretriangle Base) 13.80 ft / 4.21 m
P (Mainsail Luff) 44.00 ft / 13.41 m
E (Mainsail Foot) 13.80 ft / 4.21 m
SA Fore 338.10 ft² / 31.41 m²
SA Main 303.60 ft² / 28.21 m²
SA Total (100%) 641.70 ft² / 59.62 m²
Est. Forestay Length 50.91 ft / 15.52 m
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