Glen L Alpha-2
Description
The Alpha 2 (also styled as ALPHA-2) is an American 18-foot sailing dory designed by Jim Macknezz for amateur boatbuilders, offered by Glen-L Marine Designs since the 1980s. This lightweight, trailerable daysailer draws inspiration from classic New England "Beachcomber-Alpha" club dories and rugged Swampscott dories, modified for modern sheet plywood construction. It's a fractional sloop with a centerboard and shallow-draft rudder, making it ideal for beach launching, beaching, and family day sailing in protected waters like bays, lakes, or coastal areas. The design emphasizes simplicity, seaworthiness, and low cost, suitable for first-time builders or experienced hobbyists. No full production run exists—it's primarily a plans-and-kits model, with hundreds of examples built worldwide by individuals.
Construction Details
| Designer | Jim Macknezz |
|---|---|
| Length | 18.500 ft |
| LOA | 18.500 ft |
| LWL | 13.250 ft |
| Beam | 4.920 ft |
| Displacement | 400 lb |
| Max Draft | 2.708 ft |
| Min Draft | 0.540 ft |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | 14 ft |
| e | 14 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | 14 ft | 14 ft | - | - | - | - |
Documents
Blueprints
Sails
Glen L Alpha-2 - MAINSAIL
| Luff | 14 ft - (4267 mm) |
|---|---|
| Foot | 14 ft - (4267 mm) |
| Leech | 16.19 ft - (4935 mm) |
| Tack Angle | * 69.7 ° |
| Diagonal | 16 ft - (4877 mm) |
| Head (inches) | 3 in - (76 mm) |
| Area | * 93.22 ft² |
| Edit in Calculator | |
Glen L Alpha-2 - JIBSAIL
| Luff | 8.75 ft - (2667 mm) |
|---|---|
| Foot | 4.25 ft - (1295 mm) |
| Leech | 7.5 ft - (2286 mm) |
| Length Perpendicular | * 3.64 ft - (1109 mm) |
| Area | * 15.93 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.