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Ross 930
Designer: Murray Ross  ·  Builder: Hopwood Boats (Nz)  ·  First built: 1982
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About the Ross 930

Designed by Murray Ross and built by New Zealand's Hopwood Boats starting in 1982, this 30.5-foot fractional sloop represents classic Kiwi yacht design philosophy with its emphasis on seaworthiness and practical sailing performance. With only 65 hulls produced, the Ross 930 remains a relatively rare find that appeals to sailors seeking a well-balanced coastal cruiser with offshore capabilities. The boat's fin keel and transom-hung rudder configuration, combined with a moderate displacement of 4,840 pounds and 36% ballast ratio, creates a stable platform that's neither too heavy nor too light for serious coastal exploration. Her comfort ratio of 13.92 suggests quick motion in a seaway, while the capsize screening value of 2.19 indicates reasonable stability for extended offshore passages with experienced crew. The fractional rig and sail area-to-displacement ratio of 23.55 provide responsive sailing characteristics without being overly aggressive, making this boat well-suited for both weekend coastal cruising and longer passages. The fiberglass construction with Divinycell cored deck and hull offers durability and lighter weight aloft. Ross 930 owners typically praise the boat's sea-kindly motion and solid construction quality, though the relatively narrow beam of 9.25 feet means interior volume is prioritized for essentials rather than spaciousness.

Core Dimensions
LOA (Length Overall) 30.50 ft / 9.30 m
LWL (Waterline Length) 26.58 ft / 8.10 m
Beam 9.25 ft / 2.82 m
Max Draft 5.50 ft / 1.68 m
Displacement 4,840.00 lb / 2,195 kg
Ballast 1,746.00 lb / 792 kg
Ballast Type Lead
Sail Area (Reported) 420.00 ft² / 39.02 m²
Design & Construction
Hull Type Fin w/transom hung rudder
Rigging Type Fractional Sloop
Construction FG w/divin. deck & hull
Designer Murray Ross
Builder Hopwood Boats (NZ)
First Built 1982
Number Built 65
Owner Reviews

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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
 109
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
 23.55
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
 36.07
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
 115.06
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
 13.92
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
 2.19
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. 6.91 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
 4.94
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. 878.50 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. 23.58
Rig Dimensions
I (Foretriangle Height) 32.17 ft / 9.81 m
J (Foretriangle Base) 10.33 ft / 3.15 m
P (Mainsail Luff) 36.33 ft / 11.07 m
E (Mainsail Foot) 14.00 ft / 4.27 m
SA Fore 166.16 ft² / 15.44 m²
SA Main 254.31 ft² / 23.63 m²
SA Total (100%) 420.47 ft² / 39.06 m²
Est. Forestay Length 33.79 ft / 10.30 m
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