ENDURANCE 35
Specifications
Hull
| LOA | 35.27 ft |
| LWL | 26.64 ft |
| Beam | 11 ft |
| Draft | 5 ft |
| Displacement | 18,607 lb |
| Ballast | 7,716.3 lb |
| Hull speed1.34·√LWL | 6.9 kn |
Rig & Sails
| Iforetriangle height | 41.8 ft |
| Jforetriangle base | 18 ft |
| Pmainsail luff | 35.3 ft |
| Emainsail foot | 14.3 ft |
| FLforestay | 18 ft |
| Mainsail | 648.8 sq ft |
| Jib (100%) | 376.2 sq ft |
| Spinnaker | 639.5 sq ft |
About the ENDURANCE 35
A highly thought of long-distance cruiser that has been built of wood, steel, ferro and GRP by amateur and professional builders around the world. Designed as a Cutter or Ketch. Specs above per Peter Ibold can vary by builder. Length overall with bow sprit: 12m / 39.37 ft
The Endurance 35 is a classic staysail ketch designed by Peter Ibold and built by Dekleer Brothers Ltd./Windboats Ltd. with a total production run of 86 hulls in 1969. This vessel is characterized by its heavy displacement of 18607.0 lb and full/long keel, reflecting a design philosophy centered on stability and seakeeping rather than speed.
- Best for:
- This boat is best suited for conservative coastal cruisers and those seeking a stable, comfortable platform for short-to-medium offshore passages, particularly given its high comfort ratio of 40.35 and low capsize ratio of 1.66.
- Bluewater capability:
- With a displacement of 18607.0 lb and a capsize ratio of 1.66, the Endurance 35 is well-suited for bluewater cruising, offering excellent stability and a proven full/long keel design that prioritizes safety and comfort over performance.
- Comparables:
- Comparable vessels include the Hallberg-Rassy 35 and the Tartan 35, as they share similar heavy-displacement characteristics, full keels, and ketch or sloop configurations from the late 1960s and early 1970s.
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° | 4.8 | 5.6 | 6.4 | 6.8 | 7.0 | 7.1 | 7.2 |
| 60° | 5.0 | 6.0 | 6.6 | 7.0 | 7.1 | 7.3 | 7.4 |
| 75° | 5.3 | 6.2 | 6.8 | 7.1 | 7.3 | 7.5 | 7.7 |
| 90° | 5.3 | 6.2 | 6.8 | 7.2 | 7.4 | 7.6 | 8.0 |
| 110° | 4.9 | 5.9 | 6.7 | 7.1 | 7.4 | 7.6 | 8.1 |
| 120° | 4.7 | 5.6 | 6.4 | 7.0 | 7.3 | 7.5 | 8.1 |
| 135° | 4.0 | 5.0 | 5.9 | 6.6 | 7.0 | 7.3 | 7.8 |
| 150° | 3.4 | 4.4 | 5.3 | 6.0 | 6.6 | 7.0 | 7.6 |
| Beat VMG | 3.1 | 3.7 | 4.2 | 4.6 | 4.8 | 4.9 | 5.1 |
| Run VMG | 3.0 | 3.9 | 4.7 | 5.4 | 6.0 | 6.6 | 7.3 |
Estimated Value
Low ConfidenceEstimated Cost of Ownership
Based on 35.27ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
6 reported issues across 4 systems for the ENDURANCE 35, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a ENDURANCE 35? 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 6 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 ENDURANCE 35?
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Brands sometimes mentioned for this model: Perkins, Beta Marine — is it one of these?
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Used sails that fit the ENDURANCE 35
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