Horstman Tri Star 25 MK III
Description
The Tri-Star 25 MK III (also referred to as TriStar 25 or Horstman Tri-Star 25) is a trailerable trimaran designed by Ed Horstman. It belongs to his long-running Tri-Star series of plans-built multihulls, which emphasize roomy accommodations, stability, and ease of amateur construction. The MK III is a variant or updated iteration of the Tri-Star 25 design (sometimes grouped with the related Tri-Star 23/25 swing-wing model), focused on a balance of daysailing, weekend cruising, and light coastal use. Like most Horstman designs, it was primarily built by home builders using plywood (often cold-molded or double-diagonal with epoxy/fiberglass sheathing) rather than by a factory.
Construction Details
| Designer | Ed Horstman |
|---|---|
| Builder | Home Built |
| Length | 25.000 ft |
| LOA | 25.000 ft |
| Beam | 16.000 ft |
| Displacement | 1700 lb |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | - |
| e | - |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | - | - | - | - | - | - |
Documents
Sails
Horstman Tri Star 25 MK III - MAINSAIL
| Luff | 25.42 ft - (7748 mm) |
|---|---|
| Foot | 11.25 ft - (3429 mm) |
| Leech | * 27.26 ft - (8309 mm) |
| Tack Angle | * 88.02 ° |
| Diagonal | * 27.44 ft - (8364 mm) |
| Head (inches) | * 5.25 in - (133 mm) |
| Area | 142.8 ft² |
| Edit in Calculator |
Horstman Tri Star 25 MK III - JIBSAIL
| Luff | 27.25 ft - (8306 mm) |
|---|---|
| Foot | 7.83 ft - (2387 mm) |
| Leech | 25 ft - (7620 mm) |
| Length Perpendicular | 7.11 ft - (2167 mm) |
| Area | 96.86 ft² |
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Horstman Tri Star 25 MK III - GENOA
| Luff | 29.83 ft - (9092 mm) |
|---|---|
| Foot | 18.33 ft - (5587 mm) |
| Leech | 29.75 ft - (9068 mm) |
| Length Perpendicular | 17.42 ft - (5310 mm) |
| Area | 259.78 ft² |
| Edit in Calculator |
Horstman Tri Star 25 MK III - SPINNAKER
| Stays | 24.25 ft - (7391 mm) |
|---|---|
| MidGirth | 23.5 ft - (7163 mm) |
| Foot | 23 ft - (7010 mm) |
| Area | 474.09 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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