DIONE 98
Specifications
Hull
| LOA | 31.99 ft |
| LWL | 23.82 ft |
| Beam | 10.27 ft |
| Draft | 5.58 ft |
| Displacement | 6,834 lb |
| Ballast | 3,328.8 lb |
| Hull speed1.34·√LWL | 6.5 kn |
Rig & Sails
| Iforetriangle height | 38.06 ft |
| Jforetriangle base | 12.17 ft |
| Pmainsail luff | 31.5 ft |
| Emainsail foot | 10.33 ft |
| FLforestay | 12.2 ft |
| Mainsail | 407.3 sq ft |
| Jib (100%) | 231.6 sq ft |
| Spinnaker | 393.7 sq ft |
About the DIONE 98
Thanks to DIONE 98 owner 'Eduardo' for providing information on this yacht.
Designed by Gary Mull and built by Nautiber SA (ESP) in 1970, the Dione 98 is a 31.99 ft masthead sloop with a displacement of 6834.0 lb. While the exact hulls built count is unknown, owner reports highlight significant structural concerns, particularly regarding deck core moisture and compression post rot.
- Best for:
- This boat suits experienced coastal cruisers willing to invest heavily in structural repairs and maintenance, as it is not recommended for novice owners due to critical age-related degradation.
- Bluewater capability:
- With a capsize ratio of 2.17 and a D/L ratio of 225.74, the hull form suggests offshore potential, but critical structural defects in the deck and keel attachment severely compromise bluewater safety without extensive restoration.
- Comparables:
- Comparable to other early 1970s European fin-keel cruisers like the Oyster 31 or Hallberg-Rassy 31, but distinguished by its specific Nautiber construction and Gary Mull design lineage.
Performance
ORC Performance Data(1 certificate)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 4.8 | 5.7 | 6.2 | 6.5 | 6.6 | 6.7 | 6.7 |
| 60° | 5.1 | 6.0 | 6.4 | 6.6 | 6.8 | 6.9 | 7.0 |
| 75° | 5.3 | 6.2 | 6.5 | 6.8 | 7.0 | 7.2 | 7.4 |
| 90° | 5.3 | 6.2 | 6.5 | 6.8 | 7.0 | 7.3 | 7.7 |
| 110° | 5.2 | 6.2 | 6.6 | 6.9 | 7.3 | 7.5 | 7.8 |
| 120° | 5.0 | 6.0 | 6.5 | 6.9 | 7.2 | 7.6 | 8.1 |
| 135° | 4.6 | 5.6 | 6.3 | 6.7 | 7.0 | 7.3 | 8.0 |
| 150° | 3.9 | 4.9 | 5.7 | 6.3 | 6.7 | 7.0 | 7.6 |
| Beat VMG | 3.1 | 3.7 | 4.2 | 4.5 | 4.7 | 4.8 | 4.8 |
| Run VMG | 3.4 | 4.2 | 5.0 | 5.7 | 6.2 | 6.6 | 7.2 |
Pricing
We don't have market pricing data for the DIONE 98 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 31.99ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
10 reported issues across 7 systems for the DIONE 98, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a DIONE 98? 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 10 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
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