Feature Photo

Soul at Phanga Bay



When you want to build a boat or look for a builder you get a set of plans and then go looking for all the products and services you need to put the boat together. Right? We're going to turn that on its head

We're creating space on our web pages where the makers and shakers come to you with specific products and services for the boats we have designed.

It's called the Raku Market Space


• We've been contacting the people and businesses in our network and we will soon be posting listings for kits, for rigs and sail packages, and builders who can supply you with a hull shoe or two, or take of your project from day one to launch.

•For our customers: We'll let you know here and on our facebook page as new products and service listings come to hand.

•For our Network Partners and those who would like to become partners; If we haven't contacted you yet let us know and we'll send you a flyer with details of how to prepare a listing.

Where we are

In 2018 Grainger designed Sports Cats are at the pinnacle of racing performance in Australia, currently holding the trophy for Australian Multihull Championships (Ullman Sails) and line honors in the Brisbane to Gladstone Race (AYS Raider).


In 2018 the Raku range has been refreshed with new models and design features that give our customers a broad range of options in the arrangement, the build process and the equipping of the boat.


In 2018 at Grainger Designs we're seeking out new manufacturing technologies, new design concepts, and ever closer engagement with our customers, with boat builders and with industry professionals around the world.


In 2018 we introduce the Raku Market to showcase the products and services of our Network Partners and provide our customers with ready access to the specialist skills and products it takes to make a modern high performance sailing catamaran.

Who we are

With a host of increasingly demanding technologies coming into play it takes a team to create a design for a modern multihull yacht. Meet two of the team members here.

Tony Grainger

In 1986 Multihull yachts were rapidly evolving in technology and design. Tony Grainger was living aboard his own trimaran at the time and established Grainger Designs in that year with a deeply held conviction there was plenty of work yet to be done.


Dan Bradford

Dan has a history in boats that includes spending a year with his family living aboard a cruising cat to racing in skiffs and dinghies and cruising the Whitsunday Islands in his 16' Calyspo cat.

 Dan has a degree in Engineering at the Australian Maritime College in Tasmania specialising in Naval Architecture. His expertise encompases modeling, draughting, engineering and pretty much all aspects of the design process.

The work we do

If you're inspired by what we do press CONNECT and let's chat.





Photos of boats we've designed including a great range of shots from leading professional marine photographers

Here for the Gallery

Connect with the people, the products and the services that go into building and sailing a modern high performance multihull

Here for the Partners Network

Discussion of topics related to design, construction, technology and pretty much anything else that comes to mind.

Here for the LAB



We've created a gallery page to follow construction of the R42 trimaran by Australian Custom Multihull Yachts at BoatWorks on the Gold Coast.

 See the latest updates here.

Raku FAQ



We've set up an FAQ page for the Raku cats.

You can see it here;



Have a question about the Raku designs, the kits, the build method we haven't addressed?

Drop it on an email and we'll see what we can come up with.


Pricing for the full range of Raku Kits is online now. See the Raku Range with prices for kits and plans here.