Explorer 21
Description
The Explorer 21 (also known as the Explorer 21 (Helsen)) is a compact, trailerable pocket cruiser/racer sailboat designed by Johannes Helsen (a naval architect active in the 1970s era, known for practical small boats). It was built by Southcoast Boats (Oldsmar, Florida, USA) starting in 1977, with a fiberglass hull and swing keel for easy trailering and shallow-water access. It's a masthead sloop rig, emphasizing affordability, simplicity, and versatility for daysailing, club racing, or short overnights
Construction Details
| Designer | Johannes "Jopie" Helsen |
|---|---|
| Builder | Southcoast Boats (Oldsmar, Florida, USA) |
| Length | 21.000 ft |
| LOA | 21.500 ft |
| LWL | 19.520 ft |
| Beam | 7.870 ft |
| Displacement | 1653 lb |
| Max Draft | 4.590 ft |
| Min Draft | 1.640 ft |
| Year Built | 1977 |
The standard boat dimensions
| i | 24.83 ft |
|---|---|
| j | 7.04 ft |
| p | 20 ft |
| e | 8.75 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 24.83 ft | 7.04 ft | 20 ft | 8.75 ft | - | - | - | - |
Sails
Explorer 21 - MAINSAIL
| Luff | * 20 ft - (6096 mm) |
|---|---|
| Foot | * 8.75 ft - (2667 mm) |
| Leech | * 21.42 ft - (6529 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 21.55 ft - (6568 mm) |
| Head (inches) | * 4 in - (102 mm) |
| Area | 87.39 ft² |
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Explorer 21 - JIBSAIL
| Luff | * 20.65 ft - (6294 mm) |
|---|---|
| Foot | * 9.15 ft - (2789 mm) |
| Leech | * 18.27 ft - (5569 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 8.1 ft - (2469 mm) |
| Deck Angle | * 12 ° |
| Area | 83.56 ft² |
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Explorer 21 - GENOA
| Luff | * 24.52 ft - (7474 mm) |
|---|---|
| Foot | * 11.23 ft - (3423 mm) |
| Leech | * 23.25 ft - (7087 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 10.56 ft - (3219 mm) |
| Deck Angle | * 4 ° |
| Area | 129.52 ft² |
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Explorer 21 - SPINNAKER
| Stays | * 24.52 ft - (7474 mm) |
|---|---|
| MidGirth | * 12.67 ft - (3862 mm) |
| Foot | * 12.67 ft - (3862 mm) |
| Perc LP | * 180 % |
| Area | 264.07 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.
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