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Concept 40
Designer: Gary Mull  ·  Builder: Concept/Hyundai  ·  First built: 1981
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About the Concept 40

With limited specifications available, the Concept 40 represents a somewhat elusive entry in the 40-foot sailing yacht category. This relative scarcity of detailed information suggests either a specialized or limited-production vessel that may have targeted a specific niche within the sailing community. Based on its 40-foot length, this sailboat would typically fall into the performance cruising or club racing segment, offering sufficient size for comfortable coastal cruising while maintaining the agility needed for competitive sailing. Boats in this size range generally strike an appealing balance between handling characteristics that allow for short-handed sailing and interior volume adequate for extended passages or weekend getaways. The Concept 40's obscure status in readily available documentation could indicate it was either a boutique design from a smaller builder or perhaps a model that had a brief production run. This rarity might actually appeal to sailors seeking something distinctive, though it could present challenges for parts availability and resale value. Without comprehensive specifications, potential buyers should conduct thorough research and sea trials to understand the boat's construction quality, sail handling systems, and overall condition before making purchasing decisions.

Core Dimensions
LOA (Length Overall) 40.00 ft / 12.19 m
LWL (Waterline Length) 31.83 ft / 9.70 m
Beam 12.75 ft / 3.89 m
Max Draft 7.00 ft / 2.13 m
Displacement 19,000.00 lb / 8,618 kg
Ballast 9,100.00 lb / 4,128 kg
Ballast Type Iron
Design & Construction
Hull Type Wing Keel
Rigging Type Masthead Sloop
Construction FG
Designer Gary Mull
Builder Concept/Hyundai
First Built 1981
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
99
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
47.89
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
263.02
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. 8.7 pounds/inch
Rig Dimensions
I (Foretriangle Height) 17.35
J (Foretriangle Base) 17.20 ft / 5.24 m
P (Mainsail Luff) 769.00 ft² / 71.44 m²
E (Mainsail Foot) Pathfinder
Engine & Accommodations
Horsepower 42
How It Compares

vs. Endeavour 40, Lancer 40, Tartan 40 Offshore

This boat Similar boats
Dimensions
LOA
Concept 40 ★
40.0 ft
Endeavour 40
40.0 ft
Lancer 40
40.0 ft
Tartan 40 Offshore
40.0 ft
LWL
Concept 40 ★
31.8 ft
Endeavour 40
32.0 ft
Lancer 40
33.7 ft
Tartan 40 Offshore
36.0 ft
Beam
Concept 40 ★
12.8 ft
Endeavour 40
13.0 ft
Lancer 40
12.0 ft
Tartan 40 Offshore
13.3 ft
Displacement
Concept 40 ★
19 lbs
Endeavour 40
25 lbs
Lancer 40
15 lbs
Tartan 40 Offshore
26 lbs
Ballast
Concept 40 ★
9 lbs
Endeavour 40
9 lbs
Lancer 40
4 lbs
Tartan 40 Offshore
10 lbs
Sail Area
Concept 40 ★
Endeavour 40
788 sq ft
Lancer 40
689 sq ft
Tartan 40 Offshore
788 sq ft
Performance
PHRF Rating (lower = faster)
Concept 40 ★
99 s/nm
Endeavour 40
147 s/nm
Lancer 40
Tartan 40 Offshore
SA / Displacement (higher = more powerful)
Concept 40 ★
Endeavour 40
14.8
Lancer 40
17.8
Tartan 40 Offshore
14.4
Ballast / Disp (higher = stiffer)
Concept 40 ★
47.9 %
Endeavour 40
36.0 %
Lancer 40
Tartan 40 Offshore
Comfort Ratio (higher = more comfortable offshore)
Concept 40 ★
Endeavour 40
36.9
Lancer 40
24.6
Tartan 40 Offshore
34.3
Capsize Screening (lower = safer)
Concept 40 ★
Endeavour 40
1.78
Lancer 40
1.93
Tartan 40 Offshore
1.80
Displacement / Length (lower = lighter)
Concept 40 ★
263
Endeavour 40
340
Lancer 40
Tartan 40 Offshore
Hull Speed
Concept 40 ★
Endeavour 40
7.6 kts
Lancer 40
7.8 kts
Tartan 40 Offshore
8.0 kts
Speed Number (higher = faster)
Concept 40 ★
Endeavour 40
1.3
Lancer 40
3.0
Tartan 40 Offshore
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