San Juan 21
Description
1250 lbs. weight 400 lbs. keel weight 17'6" LWL 7' Beam 4' Draft board down 8" Draft board up
Construction Details
| Designer | Don Clark |
|---|---|
| Length | 20.500 ft |
| LOA | 20.500 ft |
| LWL | 17.000 ft |
| Beam | 7.000 ft |
| Displacement | 1250 lb |
| Max Draft | 4.000 ft |
| Min Draft | 1.000 ft |
The standard boat dimensions
| i | 22.50 ft |
|---|---|
| j | 8 ft |
| p | 23 ft |
| e | 8.75 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 22.50 ft | 8 ft | 23 ft | 8.75 ft | - | - | - | - |
Sails
An asterisk indicates that a computer algorithm was used to determine the dimension based on sailboat rig dimensions (usually the I, J, P, and E)
| Sail Type | MAINSAIL |
|---|---|
| Luff | 23 ft - (7010 mm) |
| Foot | 8.75 ft - (2667 mm) |
| Leech | * 24.29 ft - (7404 mm) |
| Tack Angle | * 89.24 ° |
| Diagonal | 24.5 ft - (7468 mm) |
| Head (inches) | 4.5 in - (114 mm) |
| Area | * 104.41 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | 20 ft - (6096 mm) |
| Foot | 9 ft - (2743 mm) |
| Leech | 18.25 ft - (5563 mm) |
| Percentage LP | * 102.5 % |
| Length Perpendicular | * 8.2 ft - (2499 mm) |
| Deck Angle | * 4.69 ° |
| Area | * 82.05 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 22.25 ft - (6782 mm) |
| Foot | 12.167 ft - (3709 mm) |
| Leech | 20.5 ft - (6248 mm) |
| Percentage LP | * 138.62 % |
| Length Perpendicular | * 11.09 ft - (3380 mm) |
| Deck Angle | * 4.73 ° |
| Area | * 123.36 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | * 22.69 ft - (6916 mm) |
| Foot | * 15.02 ft - (4578 mm) |
| Leech | * 21.19 ft - (6459 mm) |
| Percentage LP | 170 % |
| Length Perpendicular | * 13.58 ft - (4139 mm) |
| Deck Angle | * 5.74 ° |
| Area | * 154.04 ft² |
| Sail Type | DRIFTER |
|---|---|
| Luff | * 22.69 ft - (6916 mm) |
| Foot | * 13.66 ft - (4164 mm) |
| Leech | * 20.13 ft - (6136 mm) |
| Perc LP | * 150 % |
| Length Perp | * 12 ft - (3658 mm) |
| Deck Angle | * 8.97 ° |
| Area | * 136.13 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | * 22.69 ft - (6916 mm) |
| Foot | * 13.2 ft - (4023 mm) |
| Leech | * 20.87 ft - (6361 mm) |
| Perc LP | * 165 % |
| Area | * 225 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | 22.5 ft - (6858 mm) |
| MidGirth | 13.83 ft - (4215 mm) |
| Foot | 13.83 ft - (4215 mm) |
| Perc LP | * 180 % |
| Area | * 264 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 22.69 ft - (6916 mm) |
| MidGirth | * 14.4 ft - (4389 mm) |
| Foot | * 14.4 ft - (4389 mm) |
| Perc LP | * 180 % |
| Area | * 278 ft² |
| Sail Type | STORMJIB |
|---|---|
| Luff | * 13.13 ft - (4002 mm) |
| Foot | * 6.14 ft - (1871 mm) |
| Leech | * 10.47 ft - (3191 mm) |
| Perc LP | * 60 % |
| Length Perp | * 4.8 ft - (1463 mm) |
| Deck Angle | * 18.97 ° |
| Area | * 31.53 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. 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.