INFERNO 33
Specifications
Hull
| LOA | 32.97 ft |
| LWL | 26.9 ft |
| Beam | 10.1 ft |
| Draft | 5.74 ft |
| Displacement | 9,920 lb |
| Ballast | 4,409.4 lb |
| Hull speed1.34·√LWL | 6.9 kn |
Rig & Sails
| Iforetriangle height | 41 ft |
| Jforetriangle base | 12.8 ft |
| Pmainsail luff | 44.62 ft |
| Emainsail foot | 14.76 ft |
| FLforestay | 12.8 ft |
| Mainsail | 618 sq ft |
| Jib (100%) | 262.4 sq ft |
| Spinnaker | 446.1 sq ft |
About the INFERNO 33
Also known as FINNGULF 33.
The Inferno 33 is a rare, lightweight fractional sloop designed by Håkan Södergren and built by NaBoats/Tabasco Marine (FIN) between 1984 and 1990. With only 25 hulls produced, this Finnish-built vessel offers a distinct alternative to more common production yachts of the late 1980s.
- Best for:
- This boat suits performance-oriented coastal cruisers and short-handed sailors who prioritize speed and agility over heavy displacement comfort. Its fractional rig and moderate displacement make it well-suited for active weekend cruising and racing.
- Bluewater capability:
- With a displacement of 9920.0 lb and a capsize ratio of 1.88, the Inferno 33 is primarily designed for coastal cruising rather than heavy offshore passage-making. Its fin keel and relatively light displacement suggest it is best suited for protected waters and short offshore passages.
- Comparables:
- Comparable boats include the Nauticat 33 and Beneteau First 33, which share similar fractional sloop rigs and performance-focused hull forms from the same era. These vessels offer similar sailing characteristics but with higher production volumes and different build origins.
Direct variant of the INFERNO 33
Near-identical models — same hull, builder and designer, re-badged or lightly changed. Specs and owner-reported issues are typically shared across the group, so a sister model's page may carry detail this one doesn't.
Performance
ORC Performance Data(3 certificates)
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° | 5.4 | 6.1 | 6.4 | 6.5 | 6.6 | 6.6 | 6.6 |
| 60° | 5.6 | 6.3 | 6.5 | 6.7 | 6.7 | 6.8 | 6.8 |
| 75° | 5.8 | 6.4 | 6.7 | 6.9 | 7.0 | 7.0 | 7.1 |
| 90° | 5.7 | 6.4 | 6.7 | 7.0 | 7.1 | 7.3 | 7.4 |
| 110° | 5.6 | 6.5 | 6.9 | 7.1 | 7.3 | 7.5 | 7.7 |
| 120° | 5.4 | 6.4 | 6.8 | 7.1 | 7.4 | 7.7 | 8.0 |
| 135° | 4.9 | 6.0 | 6.6 | 7.0 | 7.3 | 7.6 | 8.3 |
| 150° | 4.1 | 5.2 | 6.1 | 6.7 | 7.0 | 7.3 | 8.0 |
| Beat VMG | 3.6 | 4.1 | 4.4 | 4.5 | 4.6 | 4.7 | 4.6 |
| Run VMG | 3.5 | 4.5 | 5.3 | 6.0 | 6.5 | 6.9 | 7.5 |
Pricing
We don't have market pricing data for the INFERNO 33 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 32.97ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the INFERNO 33yet 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 INFERNO 33? 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 INFERNO 33?
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 INFERNO 33
Checking eBay for sails sized to this boat's rig…