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Halmatic 30
Designer: John B Sharp  ·  Builder: Halmatic Ltd. (Uk)  ·  First built: 1979
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About the Halmatic 30

Designed by John B Sharp and built by Halmatic Ltd. in the UK from 1979 to 1988, this solidly constructed fiberglass cruiser represents classic British yacht design philosophy with a focus on seaworthiness over speed. With only 95 hulls produced during its nine-year production run, the Halmatic 30 remains a relatively rare find on the used boat market. The boat's traditional long keel configuration with transom-hung rudder provides excellent directional stability and tracking ability, making it particularly well-suited for coastal cruising and short-handed sailing. The substantial displacement of 9,000 pounds, with exactly half carried as ballast, creates a stable platform that inspires confidence in rough conditions. Her comfort ratio of 27.92 indicates a motion that favors seakindliness over quick, snappy responses to waves. While the sail area to displacement ratio of 15.95 suggests modest performance in light air, the masthead sloop rig offers simplicity and reliability for cruising sailors. The 4.5-foot draft allows access to reasonable harbor depths while maintaining good windward ability. With her hull speed of 6.4 knots and conservative design approach, this yacht appeals to sailors prioritizing safety and comfort over racing performance, making her an excellent choice for weekend coastal adventures and extended cruising.

Core Dimensions
LOA (Length Overall) 29.50 ft / 8.99 m
LWL (Waterline Length) 22.83 ft / 6.96 m
Beam 9.50 ft / 2.90 m
Max Draft 4.50 ft / 1.37 m
Displacement 9,000.00 lb / 4,082 kg
Ballast 4,500.00 lb / 2,041 kg
Ballast Type Iron
Sail Area (Reported) 430.00 ft² / 39.95 m²
Design & Construction
Hull Type Long keel w/trans. hung rudder
Rigging Type Masthead Sloop
Construction FG
Designer John B Sharp
Builder Halmatic Ltd. (UK)
First Built 1979
Last Built 1988
Number Built 95
Owner Reviews

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Performance Ratios
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
 15.95
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
 50
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
 337.66
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
 27.92
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
 1.83
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. 6.40 kn
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. 774.95 pounds/inch
Engine & Accommodations
Engine Make Volvo
Engine Type Diesel
Horsepower 13
Fuel Capacity 12 gals / 45 L
Water Capacity 45 gals / 170 L
Find a Halmatic 30 For Sale
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