Cosmos 1250 catamaran
Description
The Cosmos 1250 (often listed as Schionning Cosmos 1250) is a high-performance cruising catamaran designed for coastal and offshore sailing with excellent speed, comfort, and build quality. It's part of the Cosmos line from Schionning Designs (Australia), known for lightweight, performance-oriented multihulls that balance racing capability with practical cruising features. Designed by Jeff Schionning (founder of Schionning Designs, with some builds or refinements credited to associates like Andy Jensen in owner references), it's offered as plans/kit for owner-builders or professional construction. The design emphasizes narrow hulls for low drag, daggerboards for upwind efficiency and shallow draft, and a generous sail plan for strong light-air performance. It's built primarily in composite (often epoxy over strip-plank cedar or similar, sometimes full fiberglass/GRP), making it strong, lightweight, and relatively low-maintenance.
Construction Details
| Designer | Jeff Schionning |
|---|---|
| Builder | Home Built |
| Length | 41.000 ft |
| LOA | 41.000 ft |
| Beam | 22.000 ft |
| Displacement | 13200 lb |
| Max Draft | 7.000 ft |
| Min Draft | 3.330 ft |
The standard boat dimensions
| i | 55.77 ft |
|---|---|
| j | 15.42 ft |
| p | 53.15 ft |
| e | 16.08 ft |
| p2 | 46.59 ft |
| e2 | 15.42 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 55.77 ft | 15.42 ft | 53.15 ft | 16.08 ft | 46.59 ft | 15.42 ft | - | - |
Sails
Cosmos 1250 catamaran - MAINSAIL
| Luff | * 53.15 ft - (16200 mm) |
|---|---|
| Foot | * 16.08 ft - (4901 mm) |
| Leech | * 54.72 ft - (16679 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 54.99 ft - (16761 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | * 438.61 ft² |
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Cosmos 1250 catamaran - JIBSAIL
| Luff | 44.5 ft - (13564 mm) |
|---|---|
| Foot | 17 ft - (5182 mm) |
| Leech | 40 ft - (12192 mm) |
| Percentage LP | * 98.9 % |
| Length Perpendicular | * 15.25 ft - (4648 mm) |
| Deck Angle | * 10.8 ° |
| Area | * 339.23 ft² |
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Cosmos 1250 catamaran - ASYMMETRICAL
| Luff | 55 ft - (16764 mm) |
|---|---|
| Foot | 26 ft - (7925 mm) |
| Leech | 52 ft - (15850 mm) |
| Perc LP | * 165 % |
| Area | * 1072 ft² |
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Cosmos 1250 catamaran - STAYSAIL
| Luff | 44.5 ft - (13564 mm) |
|---|---|
| Foot | 17 ft - (5182 mm) |
| Leech | 40 ft - (12192 mm) |
| Percentage LP | * 98.9 % |
| Length Perpendicular | * 15.25 ft - (4648 mm) |
| Deck Angle | * 7.94 ° |
| Area | * 339.23 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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