Sea Spray 15 Catamaran
Description
The Sea Spray is a classic plywood pocket cruiser sailboat designed by Canadian naval architect Allan J. Arnold in 1957, originally built by owner Harold Aune as a homebuilt prototype for coastal and inland cruising, with plans popularized through magazines like The Model Engineer and Boat Builder sparking hundreds of amateur builds worldwide through the 1960s-1980s. Primarily constructed as stitch-and-glue or lapstrake plywood kits (exact total unknown but estimated 200-500+), it features a shoal-draft full keel, sloop rig, cozy cuddy cabin for two, self-bailing cockpit, and simple lines ideal for beginners—emphasizing seaworthiness, trailering ease, and low cost. Key features: centerboard option, 150 lb ballast, and 110 sq ft sail area for stable performance.
Construction Details
| Designer | Allan J. Arnold |
|---|---|
| Builder | Gen-Mar, Inc. (Hermosa Beach, CA) |
| Length | 15.500 ft |
| LOA | 15.500 ft |
| LWL | 14.000 ft |
| Beam | 6.000 ft |
| Displacement | 650 lb |
| Ballast | 150 lb |
| Max Draft | 3.500 ft |
| Min Draft | 0.667 ft |
| Year Built | 1957 |
The standard boat dimensions
| i | 17.50 ft |
|---|---|
| j | 6.50 ft |
| p | 18 ft |
| e | 8 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 17.50 ft | 6.50 ft | 18 ft | 8 ft | - | - | - | - |
Sails
Sea Spray 15 Catamaran - MAINSAIL
| Luff | 18.58 ft - (5663 mm) |
|---|---|
| Foot | 9.33 ft - (2844 mm) |
| Leech | * 19.21 ft - (5855 mm) |
| Tack Angle | * 82.48 ° |
| Diagonal | 19.67 ft - (5995 mm) |
| Head (inches) | 9.5 in - (241 mm) |
| Area | * 92.19 ft² |
| Edit in Calculator |
Sea Spray 15 Catamaran - MAINSAIL
| Luff | 18.58 ft - (5663 mm) |
|---|---|
| Foot | 8.958 ft - (2730 mm) |
| Leech | * 19.43 ft - (5922 mm) |
| Tack Angle | * 83.35 ° |
| Diagonal | 19.67 ft - (5995 mm) |
| Head (inches) | 5 in - (127 mm) |
| Area | * 85.99 ft² |
| Edit in Calculator |
Sea Spray 15 Catamaran - JIBSAIL
| Luff | 12.25 ft - (3734 mm) |
|---|---|
| Foot | 6 ft - (1829 mm) |
| Leech | 11.25 ft - (3429 mm) |
| Length Perpendicular | * 5.49 ft - (1673 mm) |
| Area | * 33.61 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.
Comments
