FORMULA 21
Specifications
Hull
| LOA | 21.08 ft |
| LWL | 18.33 ft |
| Beam | 7.25 ft |
| Draft | 3.75 ft |
| Displacement | 1,800 lb |
| Hull speed1.34·√LWL | 5.7 kn |
Rig & Sails
| Iforetriangle height | 26 ft |
| Jforetriangle base | 8.5 ft |
| Pmainsail luff | 23.5 ft |
| Emainsail foot | 8 ft |
| FLforestay | 8.5 ft |
| Mainsail | 212 sq ft |
| Jib (100%) | 110.5 sq ft |
| Spinnaker | 187.9 sq ft |
About the FORMULA 21
The Formula 21 is a compact masthead sloop designed by an unknown designer and built by Independant Yachts (CAN) in 1980. With a build count of ? hulls, this vessel represents a specific snapshot of late-1970s/early-1980s Canadian production, characterized by its 21.08 ft LOA and 1800.0 lb displacement.
- Best for:
- This boat is best suited for coastal cruising and daysailing, appealing to owners seeking a manageable, lightweight package for sheltered waters rather than heavy offshore passage-making.
- Bluewater capability:
- With a low displacement of 1800.0 lb and a comfort ratio of 10.37, the Formula 21 is not designed for bluewater cruising and is best restricted to coastal and protected waters.
- Comparables:
- Comparable vessels include other 20-22 ft trailerable sloops from the same era, such as the O'Day 23 or Pearson 22, which share similar displacement ranges and coastal cruising roles.
Performance
Pricing
We don't have market pricing data for the FORMULA 21 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Asking price by model year
5 listings · boat years 1989–2007 · median $34,746
Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.
Estimated Cost of Ownership
Based on 21.08ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the FORMULA 21yet 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 FORMULA 21? 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 FORMULA 21?
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 FORMULA 21
Checking eBay for sails sized to this boat's rig…