FOUR 21
Specifications
Hull
| LOA | 21.5 ft |
| LWL | 19.5 ft |
| Beam | 7.25 ft |
| Draft | 2.5 ft |
| Displacement | 3,584 lb |
| Ballast | 1,125 lb |
| Hull speed1.34·√LWL | 5.9 kn |
About the FOUR 21
The Four 21 is a compact coastal cruiser designed by John Powell and built in 1964, with an unknown total hull production count. Its lightweight displacement of 3584.0 lb and twin/triple keel configuration reflect a design philosophy focused on ease of handling and trailerability rather than heavy offshore stability.
- Best for:
- This boat is best suited for coastal cruising, weekend getaways, and trailerable sailing, appealing to owners who prioritize low maintenance and easy transport over long-range bluewater capability.
- Bluewater capability:
- With a low displacement of 3584.0 lb and a capsize ratio of 1.9, the Four 21 is not recommended for serious offshore passages, as its light weight and short waterline of 19.5 ft limit its seakeeping and reserve buoyancy in heavy weather.
- Comparables:
- Comparable boats from this era include the O'Day 22 and Pearson 22, which share similar trailerable dimensions and masthead sloop rigs, though the Four 21 distinguishes itself with its unique twin/triple keel layout and lighter displacement.
Performance
Pricing
We don't have market pricing data for the FOUR 21 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 21.5ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
7 reported issues across 5 systems for the FOUR 21, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a FOUR 21? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.
- ✓ All 7 specific issues — severity, symptoms & fixes
- ✓ Model-specific pre-purchase inspection checklist
- ✓ Downloadable PDF to take to your surveyor — yours to keep
One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep
Similar Sailboats
Which engine powers your FOUR 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.
Brands sometimes mentioned for this model: Yanmar, Bukh — is it one of these?
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the FOUR 21
Checking eBay for sails sized to this boat's rig…