Welcome to the Junk Rig Association (JRA)


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Public and Members' Areas.

This is the public Home page. Members should log in top right. This should take you to the Members Area - also accessible using this link, or from the menu, left.

For help , first try HELP, then email the Webmaster

Formed in 1979 at the Southampton Boat Show by a group of junk rig enthusiasts, the JRA (Junk Rig Association) is for its members and about their boats and their rigs. We aim to: promote the use of the junk rig by encouraging members to organise 'rallies' and 'junkets' (see About Us) and via our tri-annual Magazine and this site; encourage the development of junk and related rigs, the building or conversion of boats to the junk rig, and the use of vessels with the rig or its derivatives; create an international community of people who've already 'junked' their boat, are thinking of doing so, or are just interested in learning what it's all about.  

Members' photo gallery - hover mouse over image to pause slideshow

Junk Rig Glossary

The final version of the Junk Rig Glossary is now available and can be found under the Junk Information menu, or directly here.  This Glossary lists all the terms related to the junk rig, its implementation and use.

Where are we based?

We were formed in the UK, and although our 'office' address and banking remains in the UK we are run by an increasingly international Committee via the Internet. A number of posts become vacant every year, at the AGM, so if you choose to join you could also put your name forward to help run the 'club'. It doesn't run itself. Our membership is now more than   50% outside the UK. Click the chart for detail.

Featured Boat

March 2020 - Ingeborg and the Johanna-style Rig

The first two vessels featured in the 2020 series just happened to showcase the SJR (developed by Slieve McGalliard) and the Junk Wingsail rig (developed by David Tyler). So, we asked Arne Kverneland if he would write the third in the series, and introduce the style of rig which he has developed. Arne writes:

My present boat Ingeborg is a 7.9m long Marieholm IF, built in 1974. The boat type had been on my ‘some-day-list’ for decades, and when a refurbished version passed under my nose in 2014, I grabbed it. From 2016 she has been sailing under her new junk rig (JR). To say that I am happy with Ingeborg and her present rig would be an understatement...

Ingeborg’s rig is of the same JR family as those on the three boats I had before; Johanna, Broremann and Frøken Sørensen. It is a slightly modified version of the Hasler-McLeod (HM) rig, shown in Practical Junk Rig (PJR).

I have tried to pile on as big sail area and tall a luff as possible for a given mast height. The sails of the Johanna-style share a number of features:

  • Seven panels of equal area, the lower four being identical parallelograms, cut with about 8% camber. 
  • The upper panels have progressively less camber.
  • All battens and yard of the same length.
  • Yard angle 70° and boom rise 10°. 
  • The sail is set with the luff and leech vertical, or even with the leech listing a tiny bit aft.

The 70° yard lets me set the sail with about 10 – 17% balance, and the luff of the sail goes well above the mast top.  The 10° boom rise ensures good clearance over the sprayhood, which lets me handle the sail without adjusting the topping lifts under way. The vertical leech ensures that there will be next to no sheet-batten tangle when tacking or gybing. I have not done much development work on this rig since Johanna’s JR became operational (2003). I have only done smaller adjustments to the rig type.

To save time when I need to draw up a new Johanna-style rig, I have produced a string of ten master sails with the Aspect Ratio (AR) ranging from 1.80 to 2.25. An important DIY-friendly feature of this rig is the way it is constructed. One only needs floor space for lofting one batten panel at the time, and even the sewing process is quite amateur-friendly. My hope is that the written how-to instructions will encourage many to fit their boats with a junk rig. 


Arne is a prolific writer and contributor, and one of the pioneers of the cambered JR sail. His detailed sail-making designs, manuals and inventions are freely available and may be found here on the technical section of this website.

Our Boat of the Month Archive is here.

Get Started

Via this page you can, even as a non-member, access many of our resources and explore our services.

To get full access you'll need to become a member - click JOIN US in the menu on the left.

Some of the things you can do even before you join include:
  • Download Ash Woods'  easy-to read Beginners' Tour [pdf, 108 Kb]. Ash wrote this for us while he was still a 'newbie'. Thanks, Ash.
  • Watch a YouTube presentation created as a junk intro for yacht clubs, odownload as a pdf [7 Mb].
  • Download Arne Kverneland's pdf [987 Kb] 'Junk Rig for Beginners' in English or French. Arne has put much thought and energy into developing cambered panel rigs. This article - one of many which you can find here - goes back to basics. It's a great read before you tackle something just as essential - Hasler/McLeods' bible Practical Junk Rig.
  • Explore membership benefits in About Us - scroll up until you see the menu on the left.
  • Find out about junks in Junk Information.
  • Browse some of the latest forum posts (right).
  • Check out photographs of members' boats in our own ever-expanding Photo Gallery.

  • Watch these Google videos or see some stills by clicking on the mosaic at the top of this page.
  • Use the search box below to explore the public pages of the site.

So lower your sails (easy in a junk) and Join Us. For how to see the menu on the left). We're great value.

Converting your boat to junk rig is the best thing you can do to improve her safety and efficiency!


The adjacent posts are from selected public fora. To see all the public posts, use the menu at the left.

Only members can post on this site. On members' pages they are attributed by name, but in 'open' fora such as those used here, they may be shown as 'Anonymous' for reasons of privacy and security.


You can search the 'public' areas of the site using this Google box:
       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

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