inferno 31 yacht

The Inferno 31 is a 31.0ft fractional sloop designed by Håkan Södergren and built in fiberglass since 1983.

The Inferno 31 is a moderate weight sailboat which is a good performer. It is reasonably stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser.

Inferno 31 for sale elsewhere on the web:

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General Data

See also: boats for sale.

• Bavaria Yachtbau Bavaria 30 Cruiser
• Michel Dufour (Francia) DUFOUR 31
• Marina di scarlino Sun Odissey 32
• Carroll Marine Ltd. FARR 30

Overall length:

Waterline length:, maximum beam:, displacement:, straightening:, sail details mq, equipments:.

Innehåll Inferno 31

• Beskrivning
• Forumdiskussioner
• Referenser o länkar

Crown 31 presenterades hösten 1983. Jag vet ej när tillverkningen upphörde men efterföljaren Inferno 31 tillverkades åtminstone i början av 1990-talet. Tillverkningen skedde hos FinnGulf Marine i Finland och hos Crown Marine i Oxelösund. I början på 2000-talet tillverkades hon av Saint Boats i Finland under namnet Saint 313. Inferno 31 är en efterföljare till Crown 31 där vissa modifieringar har gjorts. Bland annat har sittbrunnen ändrats så att det är bekvämare att sitta på skarndäck. Jag vet inte skillnader mellan Saint 313 och de tidigare modellerna mer än att inredningen är något annorlunda.

• Båttyp Segelbåt
• Konstruktör Håkan Södergren
• Tillverkare Uppgift saknas

Denna båtmodell finns i flera utföranden

• Finngulf 31

Konstruktion

Utrustning & Motor

Köp segel till Inferno 31 :

Storsegel från 22 200 SEK Fock från 25 200 SEK Spinnaker från 39 500SEK

Direkt till babord om nedgångstrappan finns L-format framåtvänt pentry spis med ugn och diskho. Akter om pentry finns stickkoj med plats för två personer. Direkt till styrbord om nedgångstrappan finns toalett och för om toaletten finns kylboxen som alltså inte finns vid pentryt. I Inferno 31 finns navigationsbord för om toaletten. Salongen består av två längsgående soffor. Mellan salong och förpik finns två mindre garderober, en på varje sida.

SRS Klassificering

Fantastisk seglare med en...

Simon Carlstedt, 2009-11-01

Underbar seglare. Styv fa...

Peter Attnäs, 2009-10-22

Båten är definitivt snabb...

Jan Rönnback, 2007-09-13

Snabb! Med den lättanvänd...

Bo Tidelius, 2004-10-18

Mycket snabb för sin stor...

Anders Ingelström, 2002-05-29

Se fler Synpunkter

Proffsbesiktning.

Finngulf 31 -88. Besiktigad 2010. Okulärt en snygg båt. Fint träinrede. Glapp i hjärtstock. Partiellt fuktig i botten, vantfästen, däcket samt överbyggnad. Invändigt tekniskt sönderskruvad, dito bedrövligt elsystem. Ny värmare felkopplad. Felaktig och åldrad gasolinstallation. Bra räddningsstege. Volvo Penta 2002 18hk ful, vattenläckage, rost, eftersatt underhåll. Vatten i drevet. Ök-pris 550 000:- såld för 535 000:-

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Diskuterat i forumet

Omega 30 vs inferno 31 (crown 31, finngu.

2007-03-25 16:31

Bilder Crown 31

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Review of Inferno 31

Basic specs..

The boat is typically equipped with a Volvo Penta diesel engine.

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Inferno 31 is 1.86, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.8 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Inferno 31 is about 156 kg/cm, alternatively 877 lbs/inch. Meaning: if you load 156 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 877 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

What is Relative Speed Performance?

Maintenance

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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• Sailboat Guide

Inferno 33 is a 32 ′ 11 ″ / 10.1 m monohull sailboat designed by Håkan Södergren and built by NaBoats/Tabasco Marine (FIN) between 1984 and 1990.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Also known as FINNGULF 33.

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• About Sailboat Guide

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The Inferno 29 is a keelboat that was built from 1982 to around 1992. The model, of which 50 were sold in the first 10 months alone, is a construction by the Swedish designer Håkan Södergren in collaboration with the Swiss sailing specialist Bruno Hunkeler. The boat, developed as a unit class , was built by the Na-Boats shipyard in Nagu , Finland .

In just six months, Södergren developed the design of the new yacht based on clear guidelines from Hunkeler. The models were the popular H-boat and the J / 24 . The Inferno was developed as a sporty family yacht, with a width of 2.50 m it can be transported by land without a special permit and is exceptionally fast for its length - boats that measure 33 or 34 feet usually have a yardstick number of 98 [1] . Nevertheless, it offers enough living space for up to six people.

After the success of the 29-foot Inferno, Södergren also constructed the Inferno 26 (1984), the Inferno 28 (1985) and the Inferno 31 (around 1990).

Table of Contents

• 2 Unter Deck
• 4 successes
• 8 items of evidence

A ballast keel hangs on the GRP hull in sandwich construction with a Divinycell core . This is filled with one ton of lead (45% of the total weight of the yacht) and contributes significantly to the stability of the ship. The balanced rudder, controlled by a tiller, hangs under the stern . The standard version includes a Yanmar 1-cylinder 7-HP built-in diesel engine with shaft and folding propeller . The sloping transom is striking.

Below deck, the boat usually offers enough space for five people, two in the bow, two on the side berths that serve as benches during the day and one in the dog berth to starboard in the aft ship. A sixth person can sleep in the middle when the table is dismantled. Due to the sporty lines of the ship, however, the cabin height is only 1.70 m. Pantry and fresh water tank with sink are also available.

The Inferno is 7/8 rigged and is usually equipped with a self-turning system. Of 12.60 m with a ship of this length unusually high mast allowed, together with the also rather lengthy large tree an area of 24 m 2 for the mainsail. Instead of Selbstwendefock 14.5 m 2 can also be a 24 m 2 - Genoa be mounted, whereby the sail load rating is above 5.2. This means that the Inferno has excellent light wind properties. The ship is one-handed to sail, as all lines in the cockpit are folded and the jib winches can be operated directly from the helmsman's seat.

Shortly after its introduction, the Inferno attracted attention with several surprising regatta victories:

• Day and night, sailing club Tribschenhorn (Lake Lucerne)
• Blue ribbon, Weggis
• Gotland round
• Stockholm Race
• Scandicap Race Hanko
• Scandicap Race Helsinki

The Inferno was also able to convince yacht testers during test drives. Luis Gazzari from the Yachtrevue about ruled: "By Inferno 29 is the duo Hunkeler Södergren achieved a very good compromise between performance and comfort. Despite excellent sailing characteristics, the ship is pleasant to handle and, in conjunction with the self-tacking jib, can also be sailed well with one hand. Further advantages are the one-class status, which keeps costs within limits, and the good fin (n) ish. "

• List of boat classes
• List of ship types
• Yachtrevue 12/82
• Sales prospectus, undated, approx. 1983
• Interview with Bruno Hunkeler, ca. 1983
• Outline drawings and specifications

Individual evidence

• ↑ Dimensioning of the Bodensee-Segler-Verband