Review of IW 31
Basic specs..
The boat is typically equipped with an inboard Volvo Penta MD1B diesel engine at 10.0 hp (7 kW), which gives a max speed about 3.9 knots.
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 IW 31 is 1.77, 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 6.3 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 IW 31 is about 120 kg/cm, alternatively 676 lbs/inch. Meaning: if you load 120 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 676 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.
| Usage | Length | Diameter | ||
| Mainsail halyard | 26.1 m | (85.5 feet) | 10 mm | (3/8 inch) |
| Jib/genoa halyard | 26.1 m | (85.5 feet) | 10 mm | (3/8 inch) |
| Spinnaker halyard | 26.1 m | (85.5 feet) | 10 mm | (3/8 inch) |
| Jib sheet | 9.4 m | (30.9 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 9.4 m | (30.9 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 23.5 m | (77.2 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 20.7 m | (67.9 feet) | 12 mm | (1/2 inch) |
| Cunningham | 2.9 m | (9.5 feet) | 10 mm | (3/8 inch) |
| Kickingstrap | 5.8 m | (19.0 feet) | 10 mm | (3/8 inch) |
| Clew-outhaul | 5.8 m | (19.0 feet) | 10 mm | (3/8 inch) |
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.
We are always looking for new photos. If you can contribute with photos for IW 31 it would be a great help.
If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.
The Iw 31 is a 30.33ft masthead sloop designed by Sparkman & Stephens and built in fiberglass by IW-Varvet (SWE) between 1968 and 1985.
350 units have been built..
The Iw 31 is a heavy sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a coastal cruiser.
Iw 31 for sale elsewhere on the web:
Main features
| Model | Iw 31 | ||
| Length | 30.33 ft | ||
| Beam | 8.83 ft | ||
| Draft | 5.42 ft | ||
| Country | Sweden (Europe) | ||
| Estimated price | $ 0 | ?? |
Login or register to personnalize this screen.
You will be able to pin external links of your choice.
See how Sailboatlab works in video
| Sail area / displ. | 14.57 | ||
| Ballast / displ. | 43.59 % | ||
| Displ. / length | 327.02 | ||
| Comfort ratio | 27.03 | ||
| Capsize | 1.78 |
| Hull type | Monohull fin keel with rudder on skeg | ||
| Construction | Fiberglass | ||
| Waterline length | 22 ft | ||
| Maximum draft | 5.42 ft | ||
| Displacement | 7800 lbs | ||
| Ballast | 3400 lbs | ||
| Hull speed | 6.29 knots |
We help you build your own hydraulic steering system - Lecomble & Schmitt
| Rigging | Masthead Sloop | ||
| Sail area (100%) | 357 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 209.79 sq.ft | ||
| Sail area main | 147.26 sq.ft | ||
| I | 36.74 ft | ||
| J | 11.42 ft | ||
| P | 31.50 ft | ||
| E | 9.35 ft |
| Nb engines | 1 | ||
| Total power | 10 HP | ||
| Fuel capacity | 0 gals |
Accommodations
| Water capacity | 0 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 |
Builder data
| Builder | IW-Varvet (SWE) | ||
| Designer | Sparkman & Stephens | ||
| First built | 1968 | ||
| Last built | 1985 | ||
| Number built | 350 |
Other photos
Modal Title
The content of your modal.
Personalize your sailboat data sheet
IW 31 - SHE 31
IW 31 - SHE 31 - Varvet / STW003726
Technical data
cabin cruiser
cruising/regatta
overall length
hull length
waterline length
standard draft
minimum draft
displacement
diesel tank
mast height
Accomodation layouts
standard version
DOCUMENTS: IW 31 - SHE 31
Sailplan drawing & measurements
pdf good resolution, english
If you find some wrong or lacking data of this boat, you can propose an update.
Technical forum: iw 31 - she 31.
Luff lengths? 03/09/2023 by stw-7239
NOTE: you will be redirected to another website.
Support the ultimate sailboat database.
The contents on this website, which today you can simply consult and use, have been collected, organized and archived by people who worked and invested in this project with passion and dedication for many years.
Before proceeding to browse, support our archive with a small donation that will allow us to maintain and improve this project.
proceed, I will donate next time
To proceed, you need to sign-in
Innehåll IW 31
- Beskrivning
- Forumdiskussioner
- Referenser o länkar
IW 31 presenterades 1968. Hon byggdes på IW-varvet i Henån. IW 31 slutade tillverkas runt 1985 även om antalet exemplar tillverkade på 1980-talet är lätträknade. Enligt uppgift har cirka 350 exemplar tillverkats. IW 31 finns i tre olika versioner. Första versionen tillverkades 1968-1972 och har dinette och längsgående pentry. Version två har längsgående soffor i salongen och bland annat nytt däck. Version tre har aluminiumlist istället för teaklist mm.
- Båttyp Segelbåt
- Konstruktör Sparkman & Stephens
- Tillverkare IW-Varvet
| Last Name | Score |
|---|---|
| Längd över allt(m) | 9.14 |
| Skrovlängd(m) | |
| Längd vattenlinjen(m) | 7.45 |
| Bredd (m) | 2.68 |
| Höjd(m) | |
| Vikt/Deplacement(kg) | 3600 |
| Djupgående (m) | 1.6 |
| Minsta djupgående (m) |
Konstruktion
| Konstruktör | Sparkman & Stephens |
| Tillverkare | IW-Varvet |
| Tillverkningsår | År 1968 - 1985 |
| Költyp | Fenköl |
| Kölmaterial | Järn |
| Kölvikt (kg) | 1600 |
| Roder | Innanpåliggande |
| Akter | Negativ |
| Skrov | Plast Skrov i enkellaminat. Däck i sandwichlaminat. |
Utrustning & Motor
| Motor | Volvo Penta MD1 10Hk / MD7 13Hk |
| Typ av framdrivning | Fast axel |
| Bränsletank (Liter) | 50 |
| Vattentank (Liter) | 150 |
| Typ av rigg | Masthead |
| Rigg beskrivning | Masthead. Genomgående mast |
| Riggmått I (m) | 11.2 |
| Riggmått J (m) | 3.48 |
| Riggmått P (m) | 9.6 |
| Riggmått E (m) | 2.85 |
| Övrigt |
| Total segelarea (m2) | |
| Storsegel (m2) | 13.7 |
| Fock (m2) | |
| Självslående fock (m2) | |
| Genua (m2) | 29.5 |
| Genua 2 (m2) | 26.2 |
| Spinnaker (m2) |
Köp segel till IW 31:
Storsegel från 22 200 SEK Fock från 25 200 SEK Spinnaker från 39 500SEK
Båtar tillverkade 1968-1972: Akterut från nedgångstrappan finns stickkoj på respektive sida. Längs babordssidan i salongen finns längsgående pentry. Till styrbord i salongen finns U-formad soffa. Mellan salong och förpik finns toalett. Traditionell förpik med två kojplatser. Båtar tillverkade efter 1972: Direkt till babord om nedgångstrappan finns L-format bakvänt pentry. Till styrbord om nedgångstrappan finns en stickkoj. För om stickkojen finns navigationsbord (stickkojen används som sittplats). Salong med två längsgående soffor. Mellan salong och förpik finns toalett. Traditionell förpik med två kojplatser. Med tanke på att båten såldes som halvfabrikat finns säkert andra lösningar.
| Höjd i kabin (m) | |
| Antalet kojplatser (st) | 5 - 5 |
SRS Klassificering
| SRS | 0.891 |
| SRS utan undanvindssegel | 0.867 |
Fantastisk sejler. Nem at...
Brian Dalgaard, 2023-05-28
Bra i kryss...
Elina, 2019-08-03
Mycket välseglande.Trygg....
Lasse Alverbo, 2004-02-15
Christian Lööf, 2003-04-09
Proffsbesiktning
Ej besiktigad
Priser ny båt
| År | Pris | Typ |
|---|---|---|
| 0 SEK |
Priser begagnade båtar
| År för affär | Prisintervall | Ant. affärer | Årsmodeller | Medelpris |
|---|---|---|---|---|
| 2002 | 185000 - 185000 | 1st | 1973-1973 | 185000 SEK |
| 2003 | 150000 - 210000 | 3st | 1969-1982 | 176667 SEK |
| 2004 | 185000 - 185000 | 1st | 1979-1979 | 185000 SEK |
| 2005 | 185000 - 196000 | 2st | 1976-1979 | 190500 SEK |
| 2006 | 200000 - 250000 | 2st | 1970-1979 | 225000 SEK |
| 2007 | 120000 - 260000 | 3st | 1970-1974 | 186667 SEK |
| 2010 | 137000 - 300000 | 4st | 1972-1975 | 211750 SEK |
| 2014 | 125000 - 125000 | 1st | 1974-1974 | 125000 SEK |
| 2019 | 0 - 0 | 1st | 1974-1974 | 0 SEK |
Begagnatpriserna ovan avser faktiskt genomförda affärer inrapporterade av båtägare (ej begärda priser).
Skicka in prisuppgifter
Diskuterat i forumet
Det finns inga inlägg i forumet relaterade till "IW 31".
Bilder IW 31
Dela dina erfarenheter av IW 31 med andra
Lägg till bild eller segelmärke
Diskutera i forumet
Lägg till din åsikt
Återförsäljare
Vill du bli sedd av Nordens seglingstokar?
Genom att samarbeta med sailguide.com når du enkelt de flesta av Nordens segelbåtsintresserade människor. Du annonserar effektivt eftersom du når en väldefinierad kundgrupp, seglare!
© Segla mera Sverige AB 1999-2018, Sidan skyddas av svensk Upphovsrätt, kopiering ej tillåten utan upphovsrättsinnehavarens tillstånd. Användningsvillkor sailguide.com
Want to publish your ad on Waa2?
I want to get mails about Recently added "iw 31" ads.
I agree with the Terms of use and Terms of Privacy .
Publication date
- Last 15 Days
- Most popular
- Most recent added
- Lower price
Price (min)
- 100.000 USD
- 125.000 USD
- 150.000 USD
- 175.000 USD
- 200.000 USD
- 225.000 USD
- 250.000 USD
- 275.000 USD
- 300.000 USD
- 350.000 USD
- 400.000 USD
- 450.000 USD
- 500.000 USD
- 600.000 USD
- 700.000 USD
- 800.000 USD
- 900.000 USD
- 1.000.000 USD
- 1.100.000 USD
- 1.300.000 USD
- 1.500.000 USD
- 1.700.000 USD
- 2.000.000 USD
- 2.500.000 USD
Price (max)
Hull Material
Length (min)
Length (max)
iw 31 for sale
Very beautiful IW 31 for sale (due to upgrade). The IW - 31 , designed by the world-famous yacht...
Very nice IW 31 ( 31 ft) for sale. The IW - 31 , by the world-famous yacht designers...
Iw Varvet Modelli Iw 31 (1972) Usato
Iw varvet modelli 31.
IW 31 , 1972, SPARKMAN & STEPHENS, SCAFO BIANCO, IW VARVET MODELLI, 1 x 18 HP VOLVO PENTA, 1 CABINA/E, 1 BAGNO/I,...
Iw Varvet Modelli Iw 31 (1969) Usato
IW 31 , 1969, SPARKMAN & STEPHEND, NATANTE, SCAFO BIANCO 2018, FRITIDSSEGEL MOTORBOAT, 1 x 18 HP LOMBARDINI, 50 ORE DI MOTO, 1 CABINA/E,...
1973 IW 31 Sparkman & Stephens, EUR 9.600,-
Ich verkaufe hier meine schöne IW 31 Segelyacht. Sie ist gepflegt und segelt prima. Da ich mir bereits eine neue, größere Yacht...
1974 IW 31 / IV Varvet / Henan / Schweden, CHF 30.000,-
Werftgepflegt, Winterlager in Halle, bisher erst zwei Eigner,Maintained by shipyard, winter storage in hall, only two owners to date,
Related Searches "iw 31" :
The information we receive from advertisement sites may vary. Therefore, when you go to the listing site, you may not always find the same offer that you see on waa2.
- Add Your Listing
- Terms of Privacy
- Terms of use
- About
Popular Sailboat Models
- Bavaria Cruiser 46
- Fountaine Pajot Saona 47
- Beneteau Oceanis 45
- Beneteau 50
- Catalina 30
Popular Powerboat Models
- Sea Doo Speedster
- Sea Ray Sundancer 320
- Bayliner Vr5
- Beneteau Antares 11
- Malibu Wakesetter 23 Lsv
- Boston Whaler 170 Montauk
- Princess V65
- Jeanneau Nc 1095
Feedback! ▼
Waa2 login to your account, register for free, forgot password.
Would you also like to receive alerts for these other related searches?
1989 boston whaler 31
beneteau oceanis 31
Waa2 uses our own and third-party cookies to improve your user experience, enhance our services, and to analyze your browsing data in order to show you relevant advertisements. By continuing browsing please note you are accepting this policy. You are free to change the settings or get more information here >>> OK
Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.
- Sailboat Guide
- Associations
IW-31 owners (in German)
IW-31 by S&S
- About Sailboat Guide
©2024 Sea Time Tech, LLC
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
COMMENTS
MK I (1968 - 1972): small stern, 'dinette' layout. MK II (1972 - 1980): larger stern, new deck, different wood trim. MK III (1980 - 1985): aluminium toe rail (instead of Teak), glass hatch, different hardware. Thanks to 'little wings' for providing additional information. Most detailed information can be found at: www.iw-31.de (in German)
Built for ocean races - which gives extra confidence when you sail with the family Nardi's Nods - By Federico Nardi of Cantiere Navale Dell Argentario. Translated by James Robinson Taylor With the IW 31 I would like to dispel the cliché that older boats do not perform well
IW-31 is a 30′ 3″ / 9.2 m monohull sailboat designed by Sparkman & Stephens and built by IW-Varvet between 1968 and 1985. ... 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. Formula. D/L = (D ÷ 2240) ÷ (0.01 x LWL)³ D: Displacement of the boat in pounds. LWL ...
The IW 31 is a sailboat designed by the American maritime architect bureau Sparkman & Stephens in the late sixties. Several hundred boats have been produced. Several hundred boats have been produced. The IW 31 is built by the Swedish yard IW-Varvet .
The Iw 31 is a 30.33ft masthead sloop designed by Sparkman & Stephens and built in fiberglass by IW-Varvet (SWE) between 1968 and 1985. 350 units have been built. The Iw 31 is a heavy sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a coastal cruiser.
November 26, 2010. "Scheherezade": Is a classic S&S built in 1969 in Sweden by IW-Varvet in Henan. Her vital statistics are Length 31' (9.3m), water line 22'. Beam 9'. Draft 5'2". Displacement 3.6 tons. Fin and skeg. We met in August 1988 at Mercury Yacht Harbour on the Hamble, our meeting followed a frustrating period without a boat.
The IW 31 - SHE 31 produced by the builder Varvet and designed by Sparkman & Stephens, is a cabin cruiser for cruising/regatta, rigged Sloop ... read more on Sailing The Web, the ultimate sailboat database.
IW31 - Classic Sailor
Very nice IW 31 (31 ft) for sale. The IW-31, by the world-famous yacht designers Sparkman & Stephens, is one of the greatest GRP classics there is today. It was designed in the late 1960s for the "half-tonner" class, taking into account the IOR formula (International Offshore Rule) valid at the time. During the 1970s, the IW-31 scooped a number ...
Vindonet - Vindo Boats; Half Ton Class; IW-31 owners (in German) Designers. Carl Andersson; Ivar Åkesson; Peter Norlin; Sparkman & Stephens; Torsten Gustavsson; Source: sailboatdata.com / CC BY. Suggest Improvements 7 sailboats built by IW-Varvet. Sailboat. IW-31.
IW 31 presenterades 1968. Hon byggdes på IW-varvet i Henån. IW 31 slutade tillverkas runt 1985 även om antalet exemplar tillverkade på 1980-talet är lätträknade. Enligt uppgift har cirka 350 exemplar tillverkats. IW 31 finns i tre olika versioner. Första versionen tillverkades 1968-1972 och har dinette och längsgående pentry.
Model: IW 31. Year: 1969. Design: #1899. Builder: IW Varvet. CANTELLA is an IW 31 - This attractive cruiser racer was built in 1969 by I.W Varvet Ab boatyard of Sweden. Approximately 350 boats were produced up until 1985 in three revisions. IW 31 - Original Brochure.
IW-31 is a Sparkman&Stephens design made in Sweden. For the big seas those low freeboards makes it a bit wet, but it is a sailors boat. Thank you for responding. I appreciate very much,! Hi new to forum 2nd posting about to take the plunge and buy first sail boat , but I want to do it right the first time.
Used 1972 Sparkman and Stephens Iw 31 for sale is located in Municipal Unit of Apollonioi (Ionian Islands Region, Greece). The Sparkman and Stephens shipyard designed and constructed this vessel in 1972. Key features 1972 Sparkman and Stephens Iw 31: length 30.51 feet, beam 8.69 feet and boat displacement 8,818.48 pounds.
IW-31 : Download Boat Record: Notes. S&S design #1899. Also known as the DELTA 94. South Hants Engineering also built a variant of this design called the SHE 9.5 TRAVELLER, a cruising version, with slightly more headroom. Another version of this design was the IW-31(#1899C), built in Sweden.
Search iw 31 prices - more than 6 listings - Very beautiful IW 31 for sale (due to upgrade). The IW-31, designed by the world-famous yacht designers Sparkman & Stephens, is one of the largest GRP classics available today. 31 feet, 9.25 x 2.70 ...
Buy Iw 31. Iw 31 for sale on DailyBoats.com are listed for a range of prices, valued from $10,247 on the more basic models to $29,469 for the most expensive. The boats can differ in size from 9.2 m to 9.3 m. The oldest one built in 1970 year. This page features Sparkman & Stephens and Sparkman and Stephens boats located in countries: Norway ...
IW 31. 9,600 EUR. Sailing boat | Year : 1973 | Country : Germany Engine : Volvo Penta MD 2020 Gallery ads. Granada 31 Nord West 4.. Larson 260 .. Vindö 90 Compass 31 Nautic 880 ...
IW-31 by S&S. Related Sailboats: Sort by: ... 1 Sailboats / Per Page: 25 / Page: 1. 0 CLICK to COMPARE . MODEL LOA FIRST BUILT FAVORITE COMPARE; IW-31: 30.33 ft / 9.24 m: 1968: ShipCanvas. KiwiGrip. Bruntons. Rudder Craft. EWOL. SBD App Non-BR ...
Technical data sheet of the second-hand Sailboats for sale. Second-hand IW 31 with 10 cv IB Diesel engine, 9.3 m in length, and m beam length. Second-hand IW 31 in Var (France). Sale of Sailboats reference 53521
IW-31 by S&S. Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.
This vessel was designed and built by the shipyard in 1975. Key features 1975 Iw 31: length 9.3 meters, beam 2.7 meters and max boat draft 1.6 meters. Hull key features 1975 Iw 31: keel type - fin keel. engine: fuel type - diesel. 1975 Iw 31 refers to classes: sailing yachts, sailing sloops and sailboats. To clarify the price €29,000 and buy ...
Nyt myynnissä IW 31 Sailing boat 1973 Helsinki Uusimaa Klikkaa tästä kuvat ja lisätiedot.