HIGH TENSION 36
Specifications
Hull
| LOA | 35.75 ft |
| LWL | 31.5 ft |
| Beam | 11.5 ft |
| Draft | 6.75 ft |
| Displacement | 19,450 lb |
| Hull speed1.34·√LWL | 7.5 kn |
Rig & Sails
| Iforetriangle height | 48.24 ft |
| Jforetriangle base | 15.3 ft |
| Pmainsail luff | 42.25 ft |
| Emainsail foot | 11 ft |
| FLforestay | 15.3 ft |
| Mainsail | 620 sq ft |
| Jib (100%) | 369 sq ft |
| Spinnaker | 627.4 sq ft |
About the HIGH TENSION 36
Based on a prototype 'High Tension' that finished second at the 1974 One-Ton Cup. The HUISMAN 37, built of aluminum, was based on this same design.
The High Tension 36 is a robust offshore cruiser designed by J. de Ridder and built by Southern Ocean Shipyard (UK) in 1974. With a displacement of 19450.0 lb and a comfort ratio of 35.46, this vessel is engineered for heavy-weather stability and long-range cruising comfort.
- Best for:
- This boat is best suited for experienced bluewater cruisers and offshore racers who prioritize seakeeping and structural integrity over high-speed planing. Its heavy displacement and fin keel make it ideal for those seeking a safe, stable platform for extended coastal and ocean passages.
- Bluewater capability:
- With a capsize ratio of 1.71 and a D/L ratio of 277.8, the High Tension 36 demonstrates excellent offshore stability and resistance to capsizing, making it highly capable for bluewater cruising.
- Comparables:
- Comparable vessels include the Hallberg-Rassy 36 and the Oyster 36, as they share similar heavy-displacement characteristics and offshore-oriented designs from the mid-1970s. These boats are comparable due to their shared emphasis on safety, robust construction, and suitability for serious offshore passagemaking.
Performance
ORC Performance Data(2 certificates)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 5.0 | 5.8 | 6.5 | 6.8 | 6.9 | 6.9 | 7.0 |
| 60° | 5.2 | 6.1 | 6.7 | 6.9 | 7.0 | 7.1 | 7.2 |
| 75° | 5.4 | 6.3 | 6.8 | 7.0 | 7.2 | 7.4 | 7.5 |
| 90° | 5.4 | 6.3 | 6.8 | 7.1 | 7.3 | 7.5 | 7.9 |
| 110° | 5.4 | 6.5 | 7.0 | 7.3 | 7.6 | 7.8 | 8.1 |
| 120° | 5.2 | 6.4 | 7.0 | 7.3 | 7.7 | 8.0 | 8.4 |
| 135° | 4.8 | 5.9 | 6.7 | 7.1 | 7.5 | 7.8 | 8.5 |
| 150° | 4.1 | 5.1 | 6.0 | 6.7 | 7.1 | 7.4 | 8.1 |
| Beat VMG | 3.3 | 3.9 | 4.4 | 4.7 | 4.8 | 4.9 | 4.9 |
| Run VMG | 3.5 | 4.4 | 5.2 | 5.9 | 6.5 | 7.0 | 7.6 |
Pricing
We don't have market pricing data for the HIGH TENSION 36 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 35.75ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
7 reported issues across 5 systems for the HIGH TENSION 36, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a HIGH TENSION 36? 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 7 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 HIGH TENSION 36?
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 — is it one of these?
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Used sails that fit the HIGH TENSION 36
Checking eBay for sails sized to this boat's rig…