CONCEPT 40
Specifications
Hull
| LOA | 40 ft |
| LWL | 31.83 ft |
| Beam | 12.75 ft |
| Draft | 7 ft |
| Displacement | 19,000 lb |
| Ballast | 9,099.1 lb |
| Hull speed1.34·√LWL | 7.6 kn |
Rig & Sails
| Iforetriangle height | 53.8 ft |
| Jforetriangle base | 17.2 ft |
| Pmainsail luff | 48.6 ft |
| Emainsail foot | 12.6 ft |
| FLforestay | 17.2 ft |
| Mainsail | 793.4 sq ft |
| Jib (100%) | 462.7 sq ft |
| Spinnaker | 786.6 sq ft |
About the CONCEPT 40
This design was sold under a number of different names. Similar to the KALIK 40, CONCEPT 40 etc.
Designed by Gary Mull and built by Concept/Hyundai, the Concept 40 is a robust cruising sloop with a production run starting in 1981. With a displacement of 19000.0 lb and a beam of 12.75 ft, it offers a comfortable offshore platform, though the exact total hulls built remains unverified in available data.
- Best for:
- This boat suits experienced coastal cruisers and bluewater adventurers who prioritize seaworthiness and comfort over high-performance racing. Its substantial displacement and fin keel make it ideal for those seeking a stable, safe passage-making vessel.
- Bluewater capability:
- With a capsize ratio of 1.91 and a comfort ratio of 28.87, the Concept 40 demonstrates strong offshore stability and motion comfort. Its heavy displacement and proven hull form support long-range cruising, provided critical structural components are maintained.
- Comparables:
- Comparable vessels include the Cal 40 and O'Day 40, which share similar displacement and era-specific cruising characteristics. These boats offer similar interior volume and offshore capability, making them direct competitors for buyers seeking a 40-foot cruising sloop.
Performance
Pricing
We don't have market pricing data for the CONCEPT 40 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 40ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
12 reported issues across 8 systems for the CONCEPT 40, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a CONCEPT 40? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.
- ✓ All 12 specific issues — severity, symptoms & fixes
- ✓ Model-specific pre-purchase inspection checklist
- ✓ Downloadable PDF to take to your surveyor — yours to keep
One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep
Similar Sailboats
Which engine powers your CONCEPT 40?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Brands sometimes mentioned for this model: Yanmar, Westerbeke, Volvo Penta, Universal — is it one of these?
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the CONCEPT 40
Checking eBay for sails sized to this boat's rig…