San Juan 28
Description
The San Juan 28 is a performance-oriented masthead sloop designed in-house by Don Clark for the Clark Boat Company in Kent, Washington, USA. Introduced in 1978 as a versatile racer-cruiser, it draws from IOR half-tonner influences with a fine entry, pinched reverse stern, and high-aspect rig for speed in light air. Over 300 were built before production ended in the early 1980s, positioning it as a popular step-up from smaller San Juans like the 21 or 26. It's praised for blending racing prowess (competitive in PHRF fleets) with weekender comfort, though its narrow stern can make it lively downwind.
Construction Details
| Designer | Don Clark |
|---|---|
| Builder | Clark Boat Company |
| Length | 28.670 ft |
| LOA | 28.670 ft |
| LWL | 22.330 ft |
| Beam | 10.000 ft |
| Displacement | 6200 lb |
| Ballast | 3100 lb |
| Max Draft | 4.500 ft |
| Year Built | 1978 |
The standard boat dimensions
| i | 37.75 ft |
|---|---|
| j | 12 ft |
| p | 33 ft |
| e | 9.50 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 37.75 ft | 12 ft | 33 ft | 9.50 ft | - | - | - | - |
Sails
San Juan 28 - MAINSAIL
| Luff | * 33 ft - (10058 mm) |
|---|---|
| Foot | * 9.5 ft - (2896 mm) |
| Leech | * 33.82 ft - (10308 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 34.02 ft - (10369 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 162.03 ft² |
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San Juan 28 - JIBSAIL
| Luff | 31.75 ft - (9677 mm) |
|---|---|
| Foot | 11.33 ft - (3453 mm) |
| Leech | 24.75 ft - (7544 mm) |
| Area | * 123.28 ft² |
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San Juan 28 - JIBSAIL
| Luff | 37.67 ft - (11482 mm) |
|---|---|
| Foot | 13 ft - (3962 mm) |
| Leech | 35 ft - (10668 mm) |
| Percentage LP | * 100.58 % |
| Length Perpendicular | * 12.07 ft - (3679 mm) |
| Deck Angle | * 4.12 ° |
| Area | * 227.41 ft² |
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San Juan 28 - JIBSAIL
| Luff | * 31.69 ft - (9659 mm) |
|---|---|
| Foot | * 15.87 ft - (4837 mm) |
| Leech | * 27.56 ft - (8400 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 13.8 ft - (4206 mm) |
| Deck Angle | * 11.95 ° |
| Area | * 218.68 ft² |
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San Juan 28 - GENOA
| Luff | * 37.63 ft - (11470 mm) |
|---|---|
| Foot | * 19.36 ft - (5901 mm) |
| Leech | * 35.42 ft - (10796 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 18 ft - (5486 mm) |
| Deck Angle | * 3.96 ° |
| Area | * 338.69 ft² |
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San Juan 28 - GENOA
| Luff | 38 ft - (11582 mm) |
|---|---|
| Foot | 19.5 ft - (5944 mm) |
| Leech | 36.5 ft - (11125 mm) |
| Percentage LP | * 153.25 % |
| Length Perpendicular | * 18.39 ft - (5605 mm) |
| Deck Angle | * 1.75 ° |
| Area | * 349.49 ft² |
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San Juan 28 - DRIFTER
| Luff | * 37.63 ft - (11470 mm) |
|---|---|
| Foot | * 20.14 ft - (6139 mm) |
| Leech | * 33.79 ft - (10299 mm) |
| Perc LP | * 150 % |
| Length Perp | * 18 ft - (5486 mm) |
| Deck Angle | * 9.02 ° |
| Area | * 338.68 ft² |
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San Juan 28 - ASYMMETRICAL
| Luff | 38 ft - (11582 mm) |
|---|---|
| Foot | 20 ft - (6096 mm) |
| Leech | 35 ft - (10668 mm) |
| Perc LP | * 165 % |
| Area | * 570 ft² |
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San Juan 28 - SPINNAKER
| Stays | * 37.63 ft - (11470 mm) |
|---|---|
| MidGirth | * 21.6 ft - (6584 mm) |
| Foot | * 21.6 ft - (6584 mm) |
| Perc LP | * 180 % |
| Area | * 691 ft² |
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San Juan 28 - STORMJIB
| Luff | * 20.76 ft - (6328 mm) |
|---|---|
| Foot | * 8.97 ft - (2734 mm) |
| Leech | * 17.01 ft - (5185 mm) |
| Perc LP | * 60 % |
| Length Perp | * 7.2 ft - (2195 mm) |
| Deck Angle | * 19 ° |
| Area | 74.74 ft² |
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San Juan 28 - STORMTRYSAIL
| Luff | * 11.46 ft - (3493 mm) |
|---|---|
| Foot | * 10.54 ft - (3213 mm) |
| Leech | * 18.56 ft - (5657 mm) |
| Length Perp | * 9.55 ft - (2911 mm) |
| Tack Angle | * -25 ° |
| Area | 54.74 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.