the water and skip back up again.’ A further benefit is the ability for sailors to easily adjust their ride height on the fly, partially retracting the wand to reduce their elevation and stay in control in very strong or gusty winds. Another benefit of the Skeeta and Nikki designs is their weight-carrying ability. ‘A stayed mast with adjustable spreaders is the only way you can manipulate the rig to suit your crew weight,’ David French says. ‘With an unstayed mast you just can’t do it, which is why people who sail most types of singlehanded dinghy are all the same size. We also have three different sail sizes for the Skeeta and Nikki to encompass as many different crew weights as we can.’ The boom vang track is also a key innovation, which greatly reduces the forces acting on the mast. ‘The rig for a foiling boat has to be completely different,’ Jim French says. You need triple the amount of leech tension. An OK dinghy has up to 25kg of
tension in the leech, for the Skeeta it’s around 80kg. In a foiler if you don’t have a controlled mast and a very tight leech, you’ll end up falling in to windward all the time. As soon as you get the apparent wind up, the top of the sail being fanned out acts as a windward lever and just pushes the mast to windward.’ With their design now proven, one
Top: Skeeta production at Cobra’s huge factory in Chonburi, Thailand.
The boats are built with an EPS foam core and a single shot, closed mould epoxy
lamination process. Above: the Skeeta’s little sister Nikki now brings the fun of foiling to the kids too. Top right: Cobra also builds the electric foiling
Fliteboard and other watersports products featuring integrated electronics
problem remained. ‘After building prototypes with carbon frames and stringers like I used to in the Moth days, I realised there was no way I could make this into a production boat,’ Jim says. ‘Just like a Moth, it would be way too expensive.’ But he had a solution. Earlier in his career, Jim had spent a while developing custom-made windsurfing race boards for Olympic Gold Medalists Bruce Kendal and Bruce Wylie, who is now head of Watersports at Cobra. He knew that the EPS-cored epoxy construction of sailboards would work just as well for a scow and it’s ideal for large production runs. ‘Jim and I first worked together in the mid-1980s,’ Wylie recalls. ‘It is great to be collaborating again, combining Jim and David’s decades of expertise with the unique craftsmanship and volume manufacturing capabilities at Cobra.’ ‘It was great to reconnect with Bruce after all these years,’ Jim says. ‘They have been great at giving us exactly what we need. I already had a fair idea of what was needed strength wise and torsional stiffness wise, so I worked with the Cobra team and we came up with a specification.’ ‘It’s got stringers, high-density foam areas, unidirectionals, you name it,’ David says. ‘There’s a lot of structure in there and the build recipe is quite involved, but it uses the same methods as the sailboards and we’re very pleased with the results.’ Cobra uses a moulded EPS foam core blank, assembled with a mixture of woven and biaxial glassfibre, localised carbon fibre reinforcements and G-10 inserts, all wet laminated into closed vacuum female moulds. With hull weights of just 32kg (Skeeta) and 23kg (Nikki), the boats are impressively light but also extremely strong and stiff. ‘Because they build so many different brands of the world’s best sailboards, Cobra are very good at
keeping secrets,’ Jim says. ‘Their CEO, Danu Chotikapanich, said to me ‘we will never tell anyone how your boats are built. If someone wants us to make a similar one, they will have to design it.’ Jim and David built the plugs in Australia and sent them to Thailand, where the moulds were made and the boats went into production – first a limited run of twenty 11ft Skeeta prototypes in 2018, which were all snapped up by Quant Boats, and then full production of a refined 12ft design at a rate of around 50 per month. ‘It’s really good to be in a situation where we can expand production as the market grows and potentially scale up to building thousands of boats per year,’ he says. With efficient production the Skeeta’s current retail price is less than half the cost of a Moth, with high-spec hardware and top-quality sails from Doyle.
The future’s looking bright for the Skeeta Foiling Craft and Cobra International partnership with strong demand for both models. Melges is marketing the boats in the US, Quant Boats in Europe and GP Watercraft in the UK. ‘Other distributors will be appointed in due course,’ Jim French says.
Cobra, meanwhile, also continues to push the boundaries of composite engineering with encapsulated electronics in groundbreaking products such as the Flite electric- powered foiling surfboard, and was recently involved in building the prototype for the Seabubble electric foiling water taxi. They’re also renewing their focus on the OEM market for composite structures, foils and components in marine applications. With their technology, marine experience, production expertise and economy of scale, it makes a lot of sense.
www.cobrainter.com
www.skeetafoilingcraft.com
q SEAHORSE 79
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110