Endurance 35 Ketch
Description
The Endurance 35 is a classic long-distance bluewater cruising sailboat designed by Peter Ibold (Peter A. Ibold) in the late 1960s/early 1970s, originally winning acclaim as a top cruising design in competitions and becoming highly regarded for its sturdy, seaworthy qualities suitable for offshore passages and liveaboard use. It has been built in various materials—including wood, steel, ferro-cement, and fiberglass (GRP/FRP)—by amateur homebuilders and professional yards worldwide, with notable professional builders including Dekleer Brothers Ltd. (Canada, often associated with staysail ketch versions), Vicente Belliure (Spain, cutter-rig variants), Windboats Ltd., and others; estimates suggest hundreds constructed overall (professional builds in the dozens to low hundreds, plus many home/composite builds), though exact totals vary due to its popularity as a DIY/project boat. The design emphasizes a heavy displacement, long keel for tracking and stability, center cockpit layout in many examples for protection and interior space, comfortable accommodations (typically berths for 5–7, full head, galley, and saloon), and versatile rig options (staysail ketch, cutter, or sloop); it's not fast but excels in heavy weather, comfort, and reliability, often described as "steady, sturdy, and comfortable" with good load-carrying ability for extended cruising.
Construction Details
| Designer | Peter Ibold |
|---|---|
| Builder | Dekleer Brothers Ltd. (Canada) |
| Length | 35.270 ft |
| LOA | 35.270 ft |
| LWL | 26.640 ft |
| Beam | 11.000 ft |
| Displacement | 18607 lb |
| Ballast | 7716 lb |
| Max Draft | 5.000 ft |
| Year Built | 1969 |
The standard boat dimensions
| i | 41.66 ft |
|---|---|
| j | 16.66 ft |
| p | 36.83 ft |
| e | 12.92 ft |
| p2 | 24.08 ft |
| e2 | 7.75 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 41.66 ft | 16.66 ft | 36.83 ft | 12.92 ft | 24.08 ft | 7.75 ft | - | - |
Sails
Endurance 35 Ketch - MAINSAIL
| Luff | * 36.83 ft - (11226 mm) |
|---|---|
| Foot | * 12.92 ft - (3938 mm) |
| Leech | * 38.44 ft - (11717 mm) |
| Tack Angle | * 87.99 ° |
| Diagonal | * 38.6 ft - (11765 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 237.65 ft² |
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Endurance 35 Ketch - JIBSAIL
| Luff | * 35.89 ft - (10939 mm) |
|---|---|
| Foot | * 23.05 ft - (7026 mm) |
| Leech | * 29.98 ft - (9138 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 19.16 ft - (5840 mm) |
| Deck Angle | * 12 ° |
| Area | 343.69 ft² |
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Endurance 35 Ketch - GENOA
| Luff | * 42.62 ft - (12991 mm) |
|---|---|
| Foot | * 27.76 ft - (8461 mm) |
| Leech | * 39.46 ft - (12027 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 24.99 ft - (7617 mm) |
| Deck Angle | * 4 ° |
| Area | 532.58 ft² |
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Endurance 35 Ketch - MIZZEN
| Luff | * 24.08 ft - (7340 mm) |
|---|---|
| Foot | * 7.75 ft - (2362 mm) |
| Leech-AftHdBd | * 24.95 ft - (7605 mm) |
| Tack Ang | * 88.02 ° |
| Diag (clew/head) | * 25.04 ft - (7632 mm) |
| Head (inches) | * 3.5 in - (89 mm) |
| Area (no Roach) | 93.21 ft² |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.