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11data points analyzed by Sailpages.com to compile this INFERNO 29 buyer’s report
INFERNO 29

INFERNO 29

NaBoats🇫🇮· Design: Håkan Södergren
from 1982
$1.3K – $3.5K est. annual maintenance
Offshore CruisermonoFractional SloopFin

Specifications

Hull

LOA28.87 ft
LWL23.95 ft
Beam8.2 ft
Draft4.92 ft
Displacement5,732 lb
Ballast2,093.9 lb
Hull speed1.34·√LWL6.6 kn

Rig & Sails

Iforetriangle height33.46 ft
Jforetriangle base10.33 ft
Pmainsail luff36.08 ft
Emainsail foot13.12 ft
FLforestay10.3 ft
Mainsail428.4 sq ft
Jib (100%)172.8 sq ft
Spinnaker293.8 sq ft

About the INFERNO 29

Sailpages Buyer's Take

The Inferno 29 is a fractional sloop designed by Håkan Södergren and built by NaBoats (FIN) in 1982. With a displacement of 5732.0 lb and a comfort ratio of 21.12, this vessel represents a specific era of Finnish boatbuilding, though the exact number of hulls built remains unknown.

Best for:
This boat suits coastal cruisers and weekend sailors who prioritize a manageable 28.87 ft LOA and a moderate 4.92 ft max draft for access to varied shorelines. Its fractional sloop rig and 20.54 SA/D ratio suggest it is well-suited for those seeking a balance of performance and ease of handling.
Bluewater capability:
With a capsize ratio of 1.84 and a displacement of 5732.0 lb, the Inferno 29 is primarily designed for coastal cruising rather than extended bluewater passages. Its fin keel and moderate ballast ratio suggest stability in moderate conditions but limited heavy-weather offshore endurance.
Comparables:
Comparable boats from the early 1980s with similar fractional sloop rigs and moderate displacement include the Benetele First 28 and the O'Day 28. These models share similar dimensions and roles, offering a mix of cruising comfort and sailing performance.

Performance

Comfort21.1
Capsize1.84
SA/Disp20.5
Disp/Len186
Bal/Disp36.5

ORC Performance Data(5 certificates)

Measured performance data from ORC (Offshore Racing Congress) certificates.

Polar Diagram

24680°30°60°90°120°150°180°WIND
6kn8kn10kn12kn14kn16kn20knbeat VMGrun VMG

Boat speed (kn) vs. true wind angle. Source: ORC

Racing Ratings

GPH688.3 s/miOSN671.1

Triple Number

LowMedHighOffshore0.76180.97331.0770Inshore0.59050.79930.9040

ORC Measured

Displacement2687 kg (5925 lb)Wetted surface16.4 m² (177 ft²)Stability index47.9

Sail Areas (ORC)

Main25.6 m² (275 ft²)Genoa22.1 m² (238 ft²)Spinnaker54.7 m² (589 ft²)

Speed Table (kn)

TWA \ TWS681012141620
52°4.85.76.16.36.46.46.4
60°5.15.96.36.56.66.66.6
75°5.36.16.46.66.86.97.0
90°5.26.16.56.76.97.27.5
110°5.26.16.66.97.37.57.9
120°5.06.06.56.97.37.78.3
135°4.55.56.36.67.07.48.3
150°3.84.85.76.36.67.07.8
Beat VMG3.13.84.24.54.64.64.5
Run VMG3.34.25.05.66.26.57.2

Pricing

We don't have market pricing data for the INFERNO 29 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 28.87ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$1.3K – $3.5K
Hull, rigging, sails, engine service
Annual Docking
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Annual Insurance
N/A
No price data available

Known Issues & Pre-Purchase Inspection

We don't have enough data on the INFERNO 29yet 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.

1Structural & Bulkheads9732Standing Rigging6403Deck & Topsides6404Keel & Keel Bolts5535Rudder & Steering5086Hull & Bottom377
Free general pre-purchase checklist
25 survey areas — hull, keel, rig, engine, electrical and more. Take it aboard when you view any boat.

Own a INFERNO 29? 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 29?

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.

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Used sails that fit the INFERNO 29

Checking eBay for sails sized to this boat's rig…