Introducing the Mach2.3

The third major upgrade in the illustrious life of the Mach2 Moth has been completed and is now shipping.

We've been working hard to make the Mach2 faster, stronger and more reliable, whilst only adding 150 grams to the overall weight.

The M2.3 incorporates production improvements, lessons learned from the Sorrento World Championships and sailor feedback.

This is the best version yet of the our 7 times World Championship winning boat.

Read more >

How The KA Sail Range Developed

tim webster
Tim Webster - 1995 Australian World Championships
The KA Sail range has seen much success over many years.  Read how the sails have evolved over time and become the most successful range of sails in the modern era of Moth sailing.

tim webster

Andrew McDougall - MSL5 in the 2001 Japan World Championships


The KA Sail Moth program saw success from the very beginning when Tim Webster asked Andrew McDougall to design a Moth sail in 1995 for the Lake Macquarie World Championships. After some months of cajoling, Andrew finally agreed to make them from mono-film. Emmet Lazich also ordered one (much to Tim's disgust). The two of them took the top two places in the Australian and World Championships that year, starting a new era in cambered Moth sails.

As Andrew was no longer sailing a Moth, development of the sails was erratic at best until in early 2001 when, after a break of nearly 16 years, Andrew got back into Moths to have another crack at the World Championships in Japan. After a lot of training through Melbourne's cold winter, Andrew only dropped one place since the last attempt (in 1985), to come a close third with his MSL5 design. As a result of the campaign, more development work was completed in six months around the 2001 World Championships than the previous six years.

In December 2002, the MSL6 model was released with much anticipation from the international Moth fleet as it was a huge jump on all previous moth sails. It was extremely easy to sail in moderate to high winds due to its low profile, low centre of effort and its ability to totally flatten off unlike any moth sail has ever done before. In the light airs, it is just as efficient and adjustable, giving it the best performance of any of the KA sails to date. This theory was only reinforced at the 2002/3 Australian National Championships some three weeks later when Rohan Veal won the title and Andrew McDougall was third.

tim websterVeal & McDougall 1st & 3rd 2003 Australian Championships using the MSL6

tim webster
The MSL7 square top head and low foot

In March 2003, the MSL7 prototype was designed, built and tested right here in Melbourne, Australia at our new sail loft showing huge improvements over the MSL6. Using a MSL7 production model, Rohan Veal finished 3rd in the 2003 World Championships held in France.

The MSL8 has a number of small changes over the MSL7 to improve on accurate sail adjustment, including screw in batten tensioners but more noticeably, the use of our new X-ply sail cloth to increase durability and sail life. Our mono-film now has a large black weave going through it which enables us to use a lighter weight film and therefore not only makes the sail stronger, but also reduces the overall weight by 500 grams. Rohan Veal used this sail to win the 2004 Australian National Titles in Lake Coothabra

The MSL9 was the biggest breakthrough however in terms of results and sales. The design was improved, luff round increase, seam shape decreased, head profile reshaped, clew raised and improved mini leach battens. The MSL9 filled 5 of the top 6 results at the 2005 Worlds not to mention 1st, 2nd, 4th and 5th at the 2005 European Championships held in Lake Garda, Italy.

The MSL8 had better durability amongst other aspects

In July 2006, the MSL9's also went on to claim 1st, 2nd and 3rd overall in the 2006 World Championships in Denmark.

The MSL9F - Used by Rohan Veal to win the 2005 World Championships

Due to the new size restrictions in place on any new Moth sails made after 1 January 2005, the MSL10 was the first batch of sails to be made by any sailmaker under the new rules. The 0.25m reduction in total area from the MSL9 meant that there was a challenge for the KA Sail design team to make the MSL10 just as fast by reducing drag. The result was fantastic for strong winds, however it suffered in light winds due to the flatter shape and shorter sail width.

Improvements on this design led to the MSL11 which was released in November 2005.


Since November 2005, KA has built and sold more MSL11's than any other Moth sail ever made. It has also helped win three major titles in Australia, including the Australian National and both the Victorian and NSW State Championships.

 In November 2006, the MSL12 was released as a slight upgrade on the MSL11. The changes included new colour scheme to reduce heat around the mast, black batten pockets to see sail shape better and a larger hounds fitting hole to allow for a wider range of masts to fit.

During 2007 the development process went down a path where two sails had been developed, allowing designs that cater for lighter sailor and heavier sailors. The MSL 10 and MSL 13 have won all before them in recent years, giving the Moth fleet a variety of options depending on their weight and conditions.

                                                                      See current designs - Click HERE

The MSL10 with the distinctive hollow leach

tim webster

Scott Babbage - 2nd overall in the 2006 Australian Championships using the MSL11

Back to Top