Islander 21
Description
The Islander 21 is an American trailerable sailboat designed by Joseph McGlasson as a pocket cruiser and first built in 1965 by McGlasson Marine (later Wayfarer Yachts) in the United States. Production ran until around 1969, with an estimated 100–200 hulls constructed, making it a rare early model from the Islander lineup (which later included more famous designs like the Islander 36). It's a fractional sloop with a full keel for stability, emphasizing simplicity and affordability for day sailing, coastal cruising, or beginner use by small crews (2–3 people). 1950 lbs. Disp. 1000 lbs. Ballast. 18' LWL. 7' Beam. 3'4" Draft
Construction Details
| Designer | Joseph McGlasson |
|---|---|
| Length | 20.830 ft |
| LOA | 20.820 ft |
| LWL | 18.000 ft |
| Beam | 7.830 ft |
| Displacement | 1950 lb |
| Max Draft | 3.330 ft |
The standard boat dimensions
| i | 26.58 ft |
|---|---|
| j | 7.66 ft |
| p | 22.25 ft |
| e | 10.67 ft |
| p2 | - |
| e2 | - |
| I | J | P | E | P2 | E2 |
|---|---|---|---|---|---|
| 26.58 ft | 7.66 ft | 22.25 ft | 10.67 ft | - | - |
Sails
| Sail Type | MAINSAIL |
|---|---|
| Luff | * 22.25 ft - (6782 mm) |
| Foot | * 10.67 ft - (3252 mm) |
| Leech | * 24.12 ft - (7352 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 24.34 ft - (7419 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 122.31 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | 22.13 ft - (6745 mm) |
| Foot | * 9.98 ft - (3042 mm) |
| Leech | * 19.54 ft - (5956 mm) |
| Percentage LP | * 115.01 % |
| Length Perpendicular | * 8.81 ft - (2685 mm) |
| Deck Angle | * 11.95 ° |
| Area | * 97.48 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 26.28 ft - (8010 mm) |
| Foot | * 12.23 ft - (3728 mm) |
| Leech | * 24.9 ft - (7590 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 11.49 ft - (3502 mm) |
| Deck Angle | * 3.96 ° |
| Area | * 150.98 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | * 26.28 ft - (8010 mm) |
| Foot | * 12.64 ft - (3853 mm) |
| Leech | * 24.18 ft - (7370 mm) |
| Perc LP | * 165 % |
| Area | * 249 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 26.28 ft - (8010 mm) |
| MidGirth | * 13.79 ft - (4203 mm) |
| Foot | * 13.79 ft - (4203 mm) |
| Perc LP | * 180 % |
| Area | * 308 ft² |
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.