Boat Plans Arch Davis | Didi Sport 15 DS15 Launch

Boat Plans Arch Davis

The long-awaited day arrived this weekend. Jim Foot, in Port Elizabeth, South Africa, launched his self-built DS15 at Algoa Bay Yacht Club. He started with a pre-cut plywood kit supplied by CKD Boats in Cape Town and took approximately 6 months of his spare time from start to launch.

DS15 "Bateleur" about to get wet for the first time.

 Despite the very light wind, they had good sailing and were impressed by performance. Jims first comments are:-

She sails beautifully and she is fast. Beating into a chop in light wind this am going at about 3,7 kts felt happy. Then was told wind spd 4 kts by passing boat quite amazing.

Very well behaved. No balance issues. Save a bit of lee helm with the kite up. Loads of compliments from older sailors. Hunter Gall get on the water you dont know what you are missing. This is one good boat. Ps only sailed in bulb config at this stage.
A few changes to make. But not many. Congrats Dudley on a fantastic hull. Its a beaut.

Ready for sails and rarin to go.

Rigging the sails. Clean deck layout and large cockpit.

Jims friend Mark Dawson was with him for the first sail and passed these comments:-

Lucky enough to be the first to sail this boat with James Norman Foot. What a beaut! After a hairy moment of rocking the boat to moorings, which became a desperate paddle when we started drifting towards the rocks, we rigged the sails and immediately accelerated away. Bateleur likes to sit flat and notably accelerate in the lightest of wind puffs. A forced capsized showed how stable she is and how literally effortless to bring her back. Sailing the Didi 15, I just want to go again. Cant wait to see her in stronger breeze. In summary...I need one.

"Bateleur" returning to ABYC with a very happy crew.

Jim will keep us up to date with his testing and fine-tuning over the next few weeks. I hope that we will also get to see some photos and videos in stronger winds as Jim and "Bateleur" grow to know each other.

The top photo of this post shows the hull shape very nicely. For those who have not followed my posts about the build, this is a plywood boat although it doesnt look like one. It is the smallest in our radius chine plywood Didi design range. The hull is the same family as the Didi Mini Mk3 and Didi 950, with topside chine above a radius chine underbody.

It can be built from plans only, plans and patterns or plans and a CNC kit. See more info about all of our designs on our website at http://dixdesign.com/

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Boat Plans Canada | South Atlantic Capsize

Boat Plans Canada

Most of you will have read here or elsewhere about our adventure in the 2014 Cape to Rio Race on the Didi 38 "Black Cat". I have published a book about it, which can now be ordered from our website. For those who dont know what happened, here is a synopsis of the book, which is titled "South Atlantic Capsize - Lessons Taught by a Big Ocean Wave".

At dusk on 5th January 2014, the Didi 38 "Black Cat" was struck by a massive wave on the second day of the 2014 Cape to Rio Race across the South Atlantic Ocean. The wave capsized her in an instant, flinging crew, equipment and food around the interior and destroying most of the electronics with water that entered through the companion hatch. "Black Cat" recovered very quickly but the electrical damage was done. This is the story about the race, the boat, the crew and what happened on that day.

Front cover of the new book

It also explains the principles of stability that control the safety of monohull sailboats, mostly those characteristics that affect the behaviour of boats in large beam seas that might capsize them and the features needed to quickly return them to upright. It does this in words and terms that can be easily understood by non-technical people.

Back cover.

You will also read the story of the capsize of the 64ft "Sayula II" in the Southern Ocean when sailing between Cape Town and Sydney in the 1973 Whitbread Round the World Race, written by yacht designer Butch Dalrymple-Smith, who was one of the crew. Also what one boat owner has added to his own boat to prepare it and himself in case they are caught by conditions that place them at risk of capsize.

I managed to coerce two of the crew to also put pen to paper, to each write a short piece about his experience. I felt this to be important because we all observe events from our particular points of observation and positions in life. My view from the inverted cabin roof of Sean Collins hanging on for his life in the cockpit and of Adrian Pearson flying like a rag doll around the cabin is very different from that of Sean looking down the steep slope of a monster wave and seeing the masthead spearing into the ocean below, knowing that the boat will follow deck-first.  I would have liked to have had stories from the other two crew as well but they did not feel capable of effectively putting their stories into words.

You can buy the book at http://dixdesign.com/articles.htm. We can ship to you wherever you are, at our normal shipping rates.

To view our range of boat designs, please visit http://dixdesign.com/


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Boat Plans Aluminium Australia | Kit build Dix 470 Plywood Catamaran

Boat Plans Aluminium Australia

Assembly of the prototype Dix 470 plywood kit by Exocetus Yachts in UK is progressing nicely. This is the second hull, with improvements added into the kit since assembly of the first hull. These photos were sent to me by Exocetus.

Exocetus is able to use more advanced methods than would be used by amateur builders but the kit is set up to allow those with more basic facilities to produce comparable quality. Being the developers of the kit, they have cut all of the components themselves on their own CNC equipment. They also have a large press that they use to join multiple sheets of plywood into long panels or other large components, like bulkheads, cabin soles etc.

Sheets being joined into long hull panels by means of a press.

This long outboard hull panel was pre-assembled into one large piece before installation.

Inboard hull side fitted, with horns for major bulkheads projecting into the bridgedeck area.

Bottom panels were fitted installed.

The side panels were glued into longer lengths for convenient assembly with the equipment available to Exocetus. For my own projects and more primitive methods, I prefer to assemble skin panels in single-sheet lengths. This leaves considerably more scope for adjustment during installation to remedy any possible errors that arise due to builder error. The bottom panels were installed in single-sheet lengths, to allow accurate fitment at the centreline joint.

In the last photo above, the jigsaw joint was aligned using a strip of plywood, wrapped in plastic tape, as a temporary butt-strap. A short screw into each lobe of the jigsaw pattern ensured accurate assembly and held the joint securely until the epoxy had set.

For more info on this and our other designs, visit http://dixdesign.com/ . For more info on the kit and options, go to http://exocetus.net/ .


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Boat Building Plans And Kits | Dix 470 Catamaran Kit Build in UK

Boat Building Plans And Kits

Kevin Bream is the owner of Exocetus Catamaran Kits in UK, the company that he formed to develop kits for our plywood catamaran designs and to market them to builders, both professional and amateur. To be sure that he does a proper job of this, he is building the Dix 470 himself, to test the fit of all parts and to develop systems to ease the whole construction process.

The number of plywood components in a boat like this is massive. Just the thought of figuring the size and shape for each one, then cutting it out before fitting it in place on the boat, can make the project being contemplated seem very intimidating. Anything that can be done to reduce the number of hours in the build and the flow of elbow grease from builder into the boat is worthy of consideration. It reduces building time for any kind of builder. For a boatyard it increases profits and for the amateur it gets him afloat and sailing sooner.

Kevin Bream has one hull completed and is now working on the second. Lessons that he learned while building the first hull have been put into making a better product. Aside from that, anyone who buys a kit from Exocetus will benefit from a product that has been built by the supplier himself. Who could provide better backup support to the builders than he who has done the development, the cutting and the building before them?

Here are recent photos of the project.

The workshop of Exocetus Catamaran Kits, first hull on the right.

Completed Dix 470 starboard hull, waiting for its mate.

Self-jigging building stocks, bolted to the concrete slab.

Interlocking bulkheads & backbone assembled, stringers in progress.

Daggerboard casing. This boat can have cruising keels or daggerboards.

Skeleton of port hull, ready for skin. The jigsaw joints are visible at panel edges.

Skeleton with side skin being dry-fitted to test for proper fit.

Stern detail of starboard hull, showing swim platform.

Exocetus Catamaran Kits can also supply similar kits for the bigger sister, the DH550.

To see more about these designs, as well as others of all types and materials, please visit http://dixdesign.com/

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