Kraken 25
Description
The Kraken 25 is a lightweight day racing trimaran sailboat designed by Australian naval architect Lock Crowther in the early 1960s (introduced around 1962–1964), as an evolution of his successful Bunyip 20 design. It was built as a plans-based boat for home/amateur builders (primarily plywood construction, with some cold-molded or fiberglass variants in later owner projects), focusing on high performance in the "C-Class" or similar small multihull racing categories of the era—emphasizing speed, low weight, and excitement for day sailing or club racing in protected waters (not intended as a full cruiser with extensive accommodations). Crowther's designs from this period were innovative for multihulls, with the Kraken 25 proving popular among early trimaran enthusiasts (e.g., documented builds and rebuilds in forums and blogs from the 2000s–2010s, including cold-molded paulownia examples). Production was scattered and low (plans-sold; likely dozens of hulls built worldwide by owners/small shops over decades, no centralized factory run or active class today). It's remembered as a fast, elegant performer with fine-entry bows and low-volume amas, though modern interest is limited to restoration projects or multihull history.
Construction Details
| Designer | Lock Crowther |
|---|---|
| Builder | Home Built |
| Length | 25.000 ft |
| LOA | 25.000 ft |
| LWL | 21.200 ft |
| Beam | 14.000 ft |
| Displacement | 1200 lb |
| Max Draft | 3.500 ft |
| Min Draft | 0.920 ft |
| Year Built | 1962 |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | 27.75 ft |
| e | 8.50 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | 27.75 ft | 8.50 ft | - | - | - | - |
Blueprints
Sails
Kraken 25 - MAINSAIL
| Luff | 27.75 ft - (8458 mm) |
|---|---|
| Foot | 8.5 ft - (2591 mm) |
| Leech | * 28.64 ft - (8729 mm) |
| Tack Angle | * 88.02 ° |
| Diagonal | * 28.74 ft - (8760 mm) |
| Head (inches) | * 4 in - (102 mm) |
| Area | 117.81 ft² |
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Kraken 25 - JIBSAIL
| Luff | 18.75 ft - (5715 mm) |
|---|---|
| Foot | 12.5 ft - (3810 mm) |
| Leech | 18.25 ft - (5563 mm) |
| Length Perpendicular | 11.6 ft - (3536 mm) |
| Area | 108.74 ft² |
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Kraken 25 - GENOA
| Luff | 22.25 ft - (6782 mm) |
|---|---|
| Foot | 12.75 ft - (3886 mm) |
| Leech | 22.25 ft - (6782 mm) |
| Length Perpendicular | 12.22 ft - (3725 mm) |
| Area | 135.9 ft² |
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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.