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Harbor 30
Designer: Steven Schock  ·  Builder: W. D. Schock  ·  First built: 2009
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About the Harbor 30

With limited specifications available, the Harbor 30 represents a somewhat elusive entry in the 30-foot sailboat category. Based on its naming convention and size class, this vessel likely emerged during the era when coastal cruising boats were gaining popularity among recreational sailors seeking capable yet manageable designs. Boats in this size range typically serve as excellent stepping stones for sailors transitioning from smaller day sailors to more substantial cruising vessels. The Harbor 30's dimensions suggest it would be well-suited for coastal cruising and weekend adventures, offering enough interior volume for basic accommodations while remaining trailer-friendly for many owners. Without detailed specifications readily accessible, potential buyers should investigate the boat's construction methods, sail plan configuration, and interior layout directly through available examples or previous owners. The relative scarcity of information may indicate either limited production numbers or a regional builder with focused distribution. For sailors considering this model, thorough inspection becomes particularly important given the limited documentation. The Harbor 30 likely appeals to those seeking an affordable entry into the 30-foot cruising category, though prospective owners should carefully evaluate individual boats to understand the specific capabilities and condition of any particular vessel.

Core Dimensions
LOA (Length Overall) 30.75 ft / 9.37 m
LWL (Waterline Length) 26.12 ft / 7.96 m
Beam 9.92 ft / 3.02 m
Max Draft 6.25 ft / 1.91 m
Displacement 7,500.00 lb / 3,402 kg
Ballast 3,300.00 lb / 1,497 kg
Sail Area (Reported) 523.00 ft² / 48.59 m²
Design & Construction
Hull Type Fin w/bulb & spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Steven Schock
Builder W. D. Schock
First Built 2009
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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
120
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
21.91
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
19.83
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. 6.85
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
3.42
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. 925.83
Rig Dimensions
I (Foretriangle Height) 39.25
J (Foretriangle Base) 12.12
P (Mainsail Luff) 40.5
E (Mainsail Foot) 14.1
SA Fore 237.86
SA Main 285.53
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