Boat Plans At Mystic Seaport | Long Distance in Small Boats

Boat Plans At Mystic Seaport

For as long as man has been on this gorgeous blue planet of ours he has sought to find adventure wherever he can. There have always been those who simply have to see what is over that next hill. When we all know what is over that next hill then the adventure becomes going over that next hill in some way that has never been done before. It has probably not been done that way before because it is just too big a challenge for most people to consider trying.

That insurmountable challenge is the best of reasons for some people to try it anyway, to prove that it actually can be done and to prove themselves to themselves. In the process of succeeding they also prove themselves to the rest of mankind. Some of mankind thinks it exceedingly silly to do these things and will be eternally critical of those who try. They have no adventurous spirit themselves and would never attempt anything that they consider the least bit risky or dangerous. Some of them become bureaucrats to control others or they encourage bureaucrats to stop the adventurers from being adventurous, a misguided attempt to protect them from themselves.

I have written here before about one such adventurous person, Anthony Steward. He is the only person to have sailed around the world in an open boat. I am fortunate that Anthony selected my TLC 19 hull as the basis for his open boat voyage. Everyone thought that he was crazy in his quest but he was permitted to do it. That is how it should be.

Now I am working on a design for another person who has the aim of circumnavigating the globe in a different way from how everyone else has done it before. His name is Davey du Plessis and he plans to peddle his way around the world. My job is to provide to him the boat that I believe will give him his best chance for success. At the same time, it has to be economical to construct because he is on a tight budget for the voyage.

The result is a multi-chine plywood craft of approximately 23ft length overall. The hull is of fairly classic form that will also make an excellent pulling boat. It has a fine bow at waterline for wave penetration and a fine stern for low drag at the low speeds that can be expected under long term human power.

Hull of the Ocean Peddle Boat for Davey du Plessis.

The superstructure is also multi-chine plywood, so that it can be quickly and easily built using stitch-&-glue building methods. It is a closed boat for maximum protection from the elements but with the ability to open up large surfaces of the central cockpit area to allow air to flow through when needed. This also increases the safety tremendously in rough conditions, making her essentially self-righting if all of the gear is properly stowed and secured.

Basic 3D model of hull and deck.

The model above is very basic, it doesnt show the details of the deck, like windows, opening panels, hatches, solar panels etc, which are detailed into the building drawings.

The whole concept is conceived to make a seaworthy boat. It is not designed for speed, it is designed for cruising slowly under human power, aided where possible by wind, wave and current.

What about the crazy man who will live long term inside this eggshell? Maybe Davey is not as crazy as you think or maybe he is more crazy than you think, I doubt that he knows for sure. He is no doubt less crazy than Anthony Steward because Davey has chosen to have a boat that will give him shelter for his long voyage. Does Davey du Plessis have the legs for this voyage? You can bet that he does, he has ridden a bicycle the length of Africa, from Cairo to Cape Town. Davey is an adventurer and I applaud him for it.

Daveys boat will be built in Knysna on the South African South Coast. The builder is his uncle, Tertius du Plessis, who has previously built one of my designs, a Didi 34.  I doubt that I will even get to see Daveys boat because his route is unlikely to pass anywhere near to me in USA.

I will add this boat to my website when the design is complete. I will no doubt offer it as an open pulling boat but it is possible that there are others who would also like to build it as a trans-ocean rowboat or peddleboat.

To see our full range of designs, please visit http://dixdesign.com/.


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Boat Plans Catamaran | Cape to Rio 2014 Black Cat Preparations

Boat Plans Catamaran

Start day for Cape to Rio 2014 draws near, now only 4 days away. Preparation of our radius chine plywood Didi 38 "Black Cat" continues. Most of the big jobs have been completed but somehow the list of smaller ones never ends.

Earlier this week we were able to go sailing for a few hours to try some of the new sails, all made by the North Sails Cape Town loft. The mainsail and jib are both carbon and are a real treat to use. They set beautifully to the designed shape and are very stable. There was a bit of swell running and I found the sails to be easier to helm to than the previous laminated Dacron sails, with the sail shape not changing from surging in the swell as happens with a softer sail.

North carbon jib. Sexy see-through clothing.

Photographic conditions were not great, so these are not the best of photos. They show the new carbon mainsail and jib. For purposes of optimising our IRC rating for the race, sail area has been reduced in the headsails, with our big (and very old) Genoas with large overlap gone for good, replaced by a jib that hardly overlaps the mast, does not foul the spreaders or shrouds and is very quick to tack. It also sheets very close and allows "Black Cat" to now sail very close to the wind. This will be a great sail any time that we have to go to windward.

North carbon mainsail

The reduction in headsail area is somewhat compensated by the larger roach of the new mainsail. The larger roach and stiffer fabric means that there is a lot more conflict between backstay and mainsail, so she now has a flicker on the backstay, which you can see on the photos, to lift the top of the backstay away from the sail to allow it to pass through.

The new Code zero has massive area and showed itself to be surprisingly close-winded also, able to sheet to a very close reach, almost a beat. With large shoulders, it is also very stable and much easier to steer to than a conventional spinnaker. This sail rates as an asymmetrical spinnaker rather than a Genoa, allowing us to sail to windward with a spinnaker in light to moderate breezes.

I have written previously about some of our crew for this race. Without bio info from the other two, here is as much info as I can give for them from my own knowledge.

Dave Immelman is the normal skipper of "Black Cat" and has graciously moved into the navigator slot to allow me to come in as skipper. Dave is very experienced in competitive sailing, having crewed in the South African "Shosholoza" Americas Cup Team, a Volvo Ocean Race campaign and extensive racing in South Africa, UK and the Med. Dave is very tough as well, having rowed 3000 miles single-handed across the North Atlantic Ocean. It was intended to be a double-handed voyage but his partner took ill and was taken off the boat very soon after the start and Dave decided to continue by himself.  We will have many interesting stories to swap on this next voyage. Dave is married to Susan, an award-winning seafood chef. They have a daughter of 5 and another arriving while we are mid-Atlantic.

Dave Immelman at the time of his rowing voyage.

Adrian Pearson is the owner of "Black Cat". He was my partner in her from during construction through to 2000, when he took over full ownership. Adrian loves to sail on her but does not often skipper her, preferring to hand over that job to someone with more experience. Not that Adrian lacks ocean experience, he was in my crew for the 1996 and 2000 Cape to Rio Races, crewed on her for the return from Rio in 2000 and did many coastal regattas and races with me around the Cape of Good Hope. Adrian is a retailer in Johannesburg, co-owner of a large grocery store.  He is currently unattached and has two sons and a daughter.

Dont forget that you will be able to track our progress across the Atlantic. Go to the official race website Cape to Rio 2014 and click on the tracking link at upper right of the screen.

I should be able to make one more post before we sail away. I hope to make an occasional post while on the water but cant guarantee that it will happen. Our Internet connection will be via costly satellite phones so has to be used sparingly. We will have a separate boat blog for the race and I will post the address of that blog in my next post here.

Read about our designs at http://dixdesign.com/.



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Dinghy Boat Plans | Hull Turning Methods

Dinghy Boat Plans

I have shown a few projects in this blog over the past few months with the hulls being turned using different methods. The bigger the boat the more critical this operation is. The risks of damage to property and injury to people increase exponentially as the boat becomes more bulky and increases in weight. Imagine the difference between turning over a plywood hull that is 6.4m (21ft) long, 2.4m (710") wide, 1.2mm (311") deep and weighing 200kg (440lb) or a 50% scaled up version of the same hull. At 9.6m (316") long, 3.6m (1110") beam and 1.8m (511") deep, it will weigh 675kg (1488lb).

It has only increased 50% in all directions but the weight is more than 3x that of the smaller boat. The bulk becomes more difficult to manage and the weight to lift and lower becomes a major factor. If, at the same time as increasing the size, you also change to steel as the construction material, that same size hull could weigh 2500-2750kg (5500-6000lb). Now you are talking about some serious loads that can get out of control, yet the boat is still only 50% bigger in each direction.

Those smaller projects are easily turned over by hand, with friends and neighbours supplying the motive power and the boat having a soft landing on tyres or some other cushioning material. Years ago a client of mine in South Africa turned his 32ft hull by himself. He jacked it up on one side until it reached the balance point, then let gravity take it the rest of the way. It fell against a young tree, then slid down the tree and came to rest flat on the ground. Luckily his hull was relatively undamaged but the tree didnt survive the experience.

There are many ways to turn a hull but that is not one of them. I have a whole chapter on this subject in my book "Shaped by Wind and Wave", to give guidance on how to safely turn your hull. The two Didi 950 hulls that were turned recently in USA and Australia both used the spit-roast method. For each of my own big boats I have used a chain block to do the work, another of the methods explained in the book.

Turning the 38ft "Black Cat" using a chain block on a scaffold tower.

The book can be ordered either as a paperback or as digital for reading on whatever screen device suits you.

To see our range of designs, go to http://dixdesign.com/.

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Pontoon Boat Plans | Trans Ocean Pedalboat

Pontoon Boat Plans

Davey du Plessis is an author, inspirational speaker and an adventurer who pushes himself far beyond the limits of us more normal people. He has ridden around the perimeter of Africa on a bicycle. He was doing a source to sea solo navigation of the Amazon River when he was ambushed and shot, then had to get himself back to civilisation. He was tested close to his limits in that adventure and still has the bullet lodged in his heart.

Daveys planned next adventure is to pedal a boat around the world. He approached me to design the boat and had his uncle, Tertius du Plessis, build it for him. The boat is now mostly complete and will soon be ready for testing.

Looks like a hi-tec starfighter but really a low-tec pedal boat.

While I designed the boat, I didnt design the propulsion system, which consists of a leg that has a conventional pedal arrangement at the top, inside the boat, and a plastic 2-blade propeller under the hull. The slow-rotating propeller has soft blades to reduce the chances of damaging marine life.

Exterior view, looking like it came from a Star Wars movie.

The styling looks very sleek and possibly intended for high speeds but high speed is not the aim. It is designed for low drag both in the water and above. A human-powered boat needs to be easily driven, to maximise the distance that can be covered for each unit of energy that goes into propelling it. That means that it must offer little resistance to the water and the air. The underbody is shaped for low drag at low speeds and to be easily steered in downwind tradewind conditions. She has a shallow barn-door type rudder, transom-hung.

Builder Tertius du Plessis with the boat during construction.

Davey is sure to find very bad weather many times on his voyaging, so his boat is also shaped for low resistance to breaking waves that strike it and it is shaped to roll back upright when (rather than if) it is capsized. Stability comes from the tankage and stowage compartments placed low down in the hull to lower the centre of gravity. The deck and cabin are shaped to float the boat high if inverted with the hatches and ports closed, to make it unstable upside-down. Davey will also be able to use his own weight inside the boat to help it roll back to upright if needed.

Construction is stitch-&-glue plywood, assembled over permanent bulkheads and partial bulkheads. The interior is divided into three compartments, separated by full bulkheads with companion hatches. Both ends are berth length, to accommodate one or two crew for a voyage.

Interior view of the cockpit. Full bulkheads separate bow and stern.

This coming weekend sees the Cape Town International Boat Show and Daveys boat will be on display.

This boat is not yet on our website but you can see our other designs at http://dixdesign.com/ and http://dixdesign.com/mobile.

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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 Pdf | Review of South Atlantic Capsize Book

Boat Plans Pdf

The first review of my book "South Atlantic Capsize - Lessons Taught by a Big Ocean Wave", has appeared. This review was written by Richard Crockett, editor of Sailing for Southern Africa magazine. I will leave the review to speak for itself.

Front cover of the book.

More Really Good Books
 
One of the perks of my job is that I do get to read some really good books. Two I have recently read got into that ‘must read’ category.

The first is entitled ‘South Atlantic Capsize’ – Lessons Taught by a Big Ocean Wave.
 
It is written by Dudley Dix and tells the story of ‘Black Cat’, the crew, the 2014 Cape to Rio Race and the storm that struck the fleet in the opening days of that race. It’s a personal account of what happened on the boat when it was capsized, what damage was done, what the men onboard did to safeguard vessel and crew, what they did to get themselves back to port – as well as what else was going on around them.

It’s rivetting reading as it is not just well written, but written by a man with a serious understanding of the sea, yacht design, yacht construction – and ultimately what happened to them out there.

I like the fact that it gives some history of the Cape to Rio Race, a pretty detailed account of the boat’s design and construction and his careful selection of crew. To many crew selection is simply a case of asking mates, but for Dix it’s far more than that.

So, for anyone contemplating competing in the 2017 Cape to Rio race, this book should be read, not for the scarey stuff, but for the practical preparation tips, and advice on handling bad weather. For those simply making passages at sea, there is lots to learn too.

Thank you Richard Crockett for the review.

To buy the book or to view our boat designs, go to http://dixdesign.com/.

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Boat Plans Wooden | Inlet Runner at the Wooden Boat Show

Boat Plans Wooden

This time last week we were in Connecticut,  participating in the 24th annual Wooden Boat Show at Mystic Seaport. We drove there with two boats in tow, the Paper Jet prototype that we have exhibited the past few years, and the prototype of our new Inlet Runner 16 garvey powerboat design. Sorry, no hyperlink for that one yet, I am still working on the design package.

Paper Jet and Inlet Runner 16 nested for long-distance travels.

The Inlet Runner was built by Kevin Agee and exhibited by him in the "I Built it Myself" section of the show. As a first-time amateur boatbuilder with little woodworking experience, he made such a great job of his project that he took 2nd place in the amateur-built powerboat division, winning the Honourable Mention Award. Congratulations to Kevin for a job well done. I helped out at the end of the project with a bit of sanding but Kevin did everything else himself.

Inlet Runner in the "I Built it Myself" section of the Wooden Boat Show.

The Inlet Runner has my interpretation of a classic garvey hull.

 The Inlet Runner received a lot of interest and we have a few builders waiting for completion of the plans. Also a few requests for both bigger and smaller versions of the same concept. Watch for those on this blog in the next year or two but they must wait in line behind other projects that are currently in progress.

This boat has side seats aft and foredeck with lockers under for stowage, icebox, bait well etc. It also has a self-draining wet deck that can be left clear for fishing space or fitted with a swivel seat for flat-water fishing. We will also offer a Jonboat format with transverse seats and a centre console format on the wet deck.

Deck layout of Inlet Runner, set up for flat water fishing.

Overall, a successful show for us. Thank you Wooden Boat Publications, for organising this show for the benefit of lovers of wooden boats of all types. I look forward to being there again in 2016.

To see our full range of designs, please visit http://dixdesign.com or, for the mobile viewers, http://dixdesign.com/mobile

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Boat Plans Skiff | DS15 Didi Sport 15 Build in South Africa

Boat Plans Skiff

Until now I have only shown the DS15 prototype, being built in Virginia Beach, USA, by Aussie Hunter Gall. Hunters project is currently stalled due to circumstances but one of the the other builds is steaming ahead apace. This one is being built by Jim Foot in Port Elizabeth, South Africa. This weekend Jim applied the last coat of epoxy to the outside of his hull and is preparing to paint it.

This series of photos shows the basics of Jims project up to this stage. This is a radius chine plywood design, with hard chine along the topsides. It is the same family of designs as the Didi Mini Mk3 and Didi 950.

Frames set up on building stocks, with stringers going on.

Stringers all done and bottom panels fitted.

Same stage, showing stringers running into forefoot.

Side panels fitted and first layer of radius progressing.

Stitch-&-glue detail of topside chine.

Second layer of radius going over first layer.

Completed radius chine, running smoothly into flat panels.

Glass taping centreline seam. Jigsaw joints of bottom panel can be seen.

Epoxy coatings started.

Nice finish starting to show.

Clean stern and nice finish.

Final coat of epoxy, ready for sanding and painting.

I will show more of Jim Foots project as it progresses toward launch date. I tend to show the projects for which I receive the best photos, so please send me your best pics if you want to see your project on this blog or the Dudley Dix Yacht Design main website.

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