TRIANGLE ONE-DESIGN
Specifications
Hull
| LOA | 28.5 ft |
| LWL | 18.5 ft |
| Beam | 7.5 ft |
| Draft | 4.75 ft |
| Displacement | 5,017 lb |
| Ballast | 2,500 lb |
| Hull speed1.34·√LWL | 5.8 kn |
Rig & Sails
| Iforetriangle height | 22.8 ft |
| Jforetriangle base | 8.25 ft |
| Pmainsail luff | 37.5 ft |
| Emainsail foot | 19.2 ft |
| FLforestay | 8.3 ft |
| Mainsail | 482.9 sq ft |
| Jib (100%) | 94.1 sq ft |
| Spinnaker | 159.9 sq ft |
About the TRIANGLE ONE-DESIGN
Alden design #278. Originally called the MARBLEHEAD CLASS, the JAMESTOWN CLASS. Of 60 built, a few have been restored and are still sailing (2005). (According to 'John G. Alden and his yacht designs' only around 14 were built.)
Performance
Pricing
We don't have market pricing data for the TRIANGLE ONE-DESIGN yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 28.5ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the TRIANGLE ONE-DESIGNyet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a TRIANGLE ONE-DESIGN? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your TRIANGLE ONE-DESIGN?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the TRIANGLE ONE-DESIGN
Checking eBay for sails sized to this boat's rig…