12' 6" Truant
Description
The design is often described as a "Simplified Sailer." It uses developed (conical or straight-section) hull surfaces that make it easier for amateurs to plank without complex compound curves or heavy framing. Builders can sometimes even build it with minimal traditional frames, chine logs, or clamps if following the "developed" approach outlined in the book. This makes it forgiving for first-time or budget-conscious builders using locally sourced lumber. The boat is featured in Edwin Monk's classic book How to Build Wooden Boats: With 16 Small-Boat Designs (originally published in the 1930s–1940s and still available as a Dover reprint).
Construction Details
| Designer | Ed Monk Sr. |
|---|---|
| Builder | Home Built |
| Length | 19.500 ft |
| LOA | 12.500 ft |
| Beam | 5.000 ft |
| Year Built | 1934 |
The standard boat dimensions
| i | 12.50 ft |
|---|---|
| j | 4.75 ft |
| p | 14.50 ft |
| e | 8.17 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 12.50 ft | 4.75 ft | 14.50 ft | 8.17 ft | - | - | - | - |
Documents
Sails
12' 6" Truant - MAINSAIL
| Luff | * 14.5 ft - (4420 mm) |
|---|---|
| Foot | * 8.17 ft - (2490 mm) |
| Leech | 15.67 ft - (4776 mm) |
| Tack Angle | * 82.37 ° |
| Diagonal | * 15.67 ft - (4776 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 61.646 ft² |
| Edit in Calculator |
12' 6" Truant - JIBSAIL
| Luff | 11.83 ft - (3606 mm) |
|---|---|
| Foot | 5.5 ft - (1676 mm) |
| Leech | 10.5 ft - (3200 mm) |
| Percentage LP | * 102.74 % |
| Length Perpendicular | * 4.88 ft - (1487 mm) |
| Deck Angle | * 6.62 ° |
| Area | * 28.87 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.
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