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Displaying items by tag: hull

#SHIPPING - The Irish Times reports that a tanker carrying hazardous cargo has been allowed to berth at Belfast Port after it reported a cracked hull off the north-west coast.

The 228-metre Germar Companion, which is is carrying 54,000 tonnes of vacuum gas oil, was on route from Rotterdam to New York when its crew discovered cracking in its upper deck some 25 miles off Tory Island.

The Air Corps and Naval Service were stood down after the cargo ship was granted permission to berth at Belfast, where its hull will be inspected.

Published in Ports & Shipping

#SANYA HULL DAMAGE – Team Sanya crew were driven back to Alicante to the team hotel they have called home for the past few weeks. For most, their families are still here. The damage to the boat is plain for all to see.

Team Sanya are weighing up the different options available to them which include repairing the boat in Spain or shipping her directly to Cape Town and carry out the repairs there. A final decision will be made later today.

sanya hull damage

Above and below Sanya's smashed hull - Photo: Team Sanya

sanyadamage2

In a completely separate incident during a dramatic sail change yesterday, Team Sanya Bowman Andy Meiklejohn sustained an injury to his foot. He has now had the time to have that injury assessed and the hospital have indeed confirmed that he has broken his foot.

The hope is Andy's foot will have healed and be strong enough to be onboard for the 11th December start of Leg 2.

 

Published in Ocean Race
Tagged under
14th September 2011

Reviewing The Top OK Dinghy Gear

News that the OK Sailing Dinghy is knocking on the door in Ireland means it might be a good time to take a look at the gear used by the top 10 sailors at the recent OK Dinghy World Championships in Largs, Scotland. It would be easy to assume that New Zealand has somewhat of a monopoly on fast OK Dinghies. Five of the hulls, six of the sails and all 10 of the masts were of New Zealand origin in some shape or form. Robert Deaves reports.

The event this year was mainly held in light and shifty winds, so for some sailors the value this of data is perhaps reduced, however it is true to say that the top sailors rose to the top as they normally do. There were no real surprises.

alistair-deaves

Alistair Deaves racing in Largs

To underline the competitiveness of this year's championship it is worth looking at the credentials of the top 10. Four were former World Champions, four were former Interdominion Champions, three were former Nordic Champions and eight were former National Champions. It was a top class field.

Hulls

The New Zealand made OK Dinghies from Icebreaker Boats NZ seem to be the boat of choice at the moment as many of the top sailors have chosen this builder. They have also won almost every major event of the past three years.

The Icebreaker shape goes back to the late 1960s when it was one of several designs from Alf Lock of Auckland. The fastest of his boats was used to take a mould and the Icebreaker came into existence. The boat has generally flat sections aft with minimal rocker and a fine entry to the bow. Upwind it tracks well and doesn't 'float' around as some of the fuller boats do. Offwind, while a fuller bowed boat would get into the plane slightly earlier, once the Icebreaker does, it has a faster top speed. In the light it is easy to handle and not as 'sticky' as some other designs.

Before 2008, Icebreaker hulls were really hard to get hold of outside New Zealand. The Kiwis didn't want the rest of the world to buy into their fast boats, and even though the mould passed through a number of hands, there was never much interest in exporting. But all that changed when Alistair Deaves took over the well used mould, refurbished it and to started to market the boat worldwide, no doubt helped by Karl Purdie (NZL) winning the 2008 World Championships in one of the first production boats.

However, according to Deaves, this is not the whole story. "The way the boat is constructed also plays a large part and Icebreaker Boats NZ has used modern computer design methods and materials to provide, what we think, is the best OK in the world. As much work as necessary is outsourced to ensure we get the best of everything."

"But of course the real reason why Icebreaker Boats NZ has such a good record is that we managed to sell to some of the best sailors, and perhaps that's the best endorsement of all. This is achieved by a policy of good quality and exceptional service, and customers often come back for new boats."

The moulding work for New Zealand Icebreakers is carried out in Auckland by Chris Brown of Performance Composites with the boats finished and marketed by Deaves through Icebreaker Boats NZ.

If it wasn't for the decline of the world economy, he says many more OK sailors would have chosen New Zealand made Icebreakers. "The import price was hiked out of reach for all but the rich and dedicated. In addition, some sailors pushed for copies of the Icebreaker to be made in Europe which has now led to three builders producing similar, but relatively cheaper copies."

Despite the crippling exchange rates some European buyers are still importing Icebreakers from New Zealand, though Deaves does admit that he has lost a lot of potential orders because of the complete nose dive in currency.

This season, like last season, Kiwi built Icebreakers have won most of the major events including the Interdominions, Spring Cup, Kiel Week, Warnemunde Week as well as many Nationals across Europe. It has also won five of the last seven world championships and last year's Europeans.

Ironically, though different NZ Icebreaker hulls won each and every race of this year's world championship, the highest place it achieved in the final overall standings was third. The championship was actually won by an Icebreaker copy, or Scolesbreaker, as it has been called, taken from Nick Craig's three times world championship winning New Zealand Icebreaker (though from a previous builder before Brown/Deaves) and built by Alex Scoles of UK based Idol Composites.

Though Craig sailed the most consistent series, by his own admission, he was not the fastest in the conditions at Largs. But, he said, "I am very pleased with my Scoles boat. Alex put in a lot of time ensuring the mould was perfectly fair, which has paid dividends with a fast and well-constructed boat that has a very long competitive life. It's nice to be able to focus on improving my rig whilst being 100% confident that my boat is fast."

Scoles commented, "It has been great for Idol Composites to have a world championship winning product and now my order book is bulging. The exchange rate has made Icebreaker Boats more expensive, but I don't think this had any significant impact on my orders so far."

In the last couple of years Idol Composites has sold OKs to the UK, Germany, Belgium, Ireland, Canada and Norway. This year it has had to take on extra staff and is looking to build more than 20 boats over the next 12 months. These are mainly for UK and Danish customers, though he also has potential orders from Sweden and Poland. Scoles also hopes to be able to ship a container full to Australia over the winter.

Idol composites offers what is considered the stiffest OK Dinghy available anywhere in the world. Everything is done in-house including the laminating, the painting and building the foils to maintain the high standards of build quality. As well as the standard gel coat finish, Idol Composites also offer 2-pack painted boats, which most of Scoles' customers opt for because of the saving in weight.

Scoles summed up his success, "It's a quality product together with a world title in a hull shape that OK sailors want." And that perhaps is the key. The Icebreaker shape is a shape from the past that everyone wants in the present.

However, all the other hulls in the top 10 are also old designs. The Hein is a German hull, with a fuller bow, the Rushworth is a copy of UK built Don O'Donnell hull from the 1970s and the Delfs copy is, as it suggests, a copy of the Swedish Delfs hull but built in Australia, with a full bow and very flat rocker that was very popular through the 1980s.

As ever there is nothing very new in the design of OK Dinghy hull shapes. As long as it is stiff, fair and down to weight, an old hull can be just as competitive as a new hull.

Masts

On an OK Dinghy, the mast is often considered the most important piece of kit. It is far more important that the hull or the sail, though of course the sail has to work with the mast to be any use. The move to carbon masts in 2004 sparked a lot of development worldwide, but in recent years the C-Tech mast from New Zealand has emerged as the most popular choice, principally after a lot of work from double world champion Karl Purdie (NZL). Even Craig has switched to a C-Tech after winning his first three titles with a Dutch built Celidh mast.

Out of any piece of kit on an OK Dinghy, C-Tech probably has the biggest market share. However, again, cost has become an issue as the exchange rate fell, opening up new development projects in Europe. But there is still some way to go on these.

Other masts in Largs included the UK built Aardvark and the Celidh.

Sails

Six out of the seven race wins in Largs were taken by sails built by Kiwis. Five of these were from Quantum Sails Potsdam, in Germany. The loft is run by Greg Wilcox, a former OK Dinghy world champion from New Zealand.

Wilcox, who himself finished fourth in Largs, explained, "Quantum Sails are individually made and matched to the sailor's weight, fitness level and, of course, mast bend. A lot of the other sails on the market are pre-made and the luff curve added last. This means there is really only one sail whereas we have a few different designs for different sailors."

"Our sails seem to have a bit of an edge when the conditions are quite varied. They seem to be very quick all round and especially downwind. I have worked with the top guys in the class like Karl Purdie and Thomas Hansson-Mild to develop the designs. They are both quite analytical and experienced and have provided very good feedback. I think this is obvious when they have won three of the last four worlds between them using these sails."

"Cloth choice is also very important however most sailmakers use Contender sailcloth which is very stable, light and reasonably durable. We try to get consistent cloth and work with our supplier towards this."

Craig used a UK built Speed sail, developed in conjunction with 2004 OK Dinghy World Champion Jim Hunt, but was never that happy with its light wind performance. Danish Green sails are very popular in Germany and Denmark and have been a key sailmaker for the class for decades. It's a similar story for Gale & Rimmington for Australia, though they tend to perform best in the windier conditions, something not experienced in Largs this year.

Other sails used in Largs include Pinnell & Bax from the UK, North from New Zealand, WB from Finland, Cicada from Germany and Linton from New Zealand.

Summary

Overall, whether by design or by choice, Kiwi knowledge and experience has produced some of the fastest combinations in the OK Dinghy in recent years and this trend looks set to continue. The main restriction for Europeans, and Americans, is the exchange rate, and before that returns to normality, if it ever does, the rest of the OK world needs to play catch up, or as in some cases, follow the same successful formula.

Table: Top 10 Gear at 2011 OK Dinghy World Championships

Shape Builder Sail Mast Board/rudder

1 Icebreaker copy Scoles Speed C-Tech Scoles
2 Hein. Hein Green C-Tech Hein
3 Icebreaker Icebreaker NZ Quantum C-Tech Jason King/KL
4 Icebreaker Icebreaker NZ Quantum C-Tech Deaves/C-Tech
5 Icebreaker Icebreaker NZ Linton/Quantum C-Tech Bumblebee
6 Rushworth Rushworth Quantum C-Tech Rushworth
7 Icebreaker Icebreaker NZ Green C-Tech Deaves
8 Icebreaker Icebreaker NZ Quantum C-Tech Deaves/C-Tech
9 Hein Hein Quantum C-Tech Hein
10 Jason King Delfs copy Gale & Rimmington C-Tech Jason King

Published in Racing
Tagged under

Dublin Bay 21s

An exciting new project to breathe life into six defunct 120-year-old Irish yachts that happen to be the oldest intact one-design keelboat class in the world has captured the imagination of sailors at Ireland's biggest sailing centre. The birthplace of the original Dublin Bay 21 class is getting ready to welcome home the six restored craft after 40 years thanks to an ambitious boat building project was completed on the Shannon Estuary that saved them from completely rotting away.

Dublin Bay 21 FAQs

The Dublin Bay 21 is a vintage one-design wooden yacht designed for sailing in Dublin Bay.

Seven were built between 1903 and 1906.

As of 2020, the yachts are 117 years old.

Alfred Mylne designed the seven yachts.

The total voting population in the Republic's inhabited islands is just over 2,600 people, according to the Department of Housing.

Dublin Bay Sailing Club (DBSC) commissioned the boat to encourage inexpensive one-design racing to recognise the success of the Water Wag one-design dinghy of 1887 and the Colleen keelboat class of 1897.

Estelle built by Hollwey, 1903; Garavogue built by Kelly, 1903; Innisfallen built by Hollwey, 1903.; Maureen built by Hollwey, 1903.; Oola built by Kelly, 1905; Naneen built by Clancy, 1905.

Overall length- 32'-6', Beam- 7'-6", Keel lead- 2 tons Sail area - 600sq.ft

The first race took place on 19 June 1903 in Dublin Bay.

They may be the oldest intact class of racing keelboat yacht in the world. Sailing together in a fleet, they are one of the loveliest sights to be seen on any sailing waters in the world, according to many Dublin Bay aficionados.

In 1964, some of the owners thought that the boats were outdated, and needed a new breath of fresh air. After extensive discussions between all the owners, the gaff rig and timber mast was abandoned in favour of a more fashionable Bermudan rig with an aluminium mast. Unfortunately, this rig put previously unseen loads on the hulls, resulting in some permanent damage.

The fleet was taken out of the water in 1986 after Hurricane Charlie ruined active Dublin Bay 21 fleet racing in August of that year. Two 21s sank in the storm, suffering the same fate as their sister ship Estelle four years earlier. The class then became defunct. In 1988, master shipwright Jack Tyrrell of Arklow inspected the fleet and considered the state of the hulls as vulnerable, describing them as 'still restorable even if some would need a virtual rebuild'. The fleet then lay rotting in a farmyard in Arklow until 2019 and the pioneering project of Dun Laoghaire sailors Fionan De Barra and Hal Sisk who decided to bring them back to their former glory.

Hurricane Charlie finally ruined active Dublin Bay 21 fleet racing in August 1986. Two 21s sank in the storm, suffering the same fate as a sister ship four years earlier; Estelle sank twice, once on her moorings and once in a near-tragic downwind capsize. Despite their collective salvage from the sea bed, the class decided the ancient boats should not be allowed suffer anymore. To avoid further deterioration and risk to the rare craft all seven 21s were put into storage in 1989 under the direction of the naval architect Jack Tyrrell at his yard in Arklow.

While two of the fleet, Garavogue and Geraldine sailed to their current home, the other five, in various states of disrepair, were carried the 50-odd miles to Arklow by road.

To revive the legendary Dublin Bay 21 class, the famous Mylne design of 1902-03. Hal Sisk and Fionan de Barra are developing ideas to retain the class's spirit while making the boats more appropriate to today's needs in Dun Laoghaire harbour, with its many other rival sailing attractions. The Dublin Bay 21-foot class's fate represents far more than the loss of a single class; it is bad news for the Bay's yachting heritage at large. Although Dún Laoghaire turned a blind eye to the plight of the oldest intact one-design keelboat fleet in the world for 30 years or more they are now fully restored.

The Dublin Bay 21 Restoration team includes Steve Morris, James Madigan, Hal Sisk, Fionan de Barra, Fintan Ryan and Dan Mill.

Retaining the pure Mylne-designed hull was essential, but the project has new laminated cold-moulded hulls which are being built inverted but will, when finished and upright, be fitted on the original ballast keels, thereby maintaining the boat’s continuity of existence, the presence of the true spirit of the ship.

It will be a gunter-rigged sloop. It was decided a simpler yet clearly vintage rig was needed for the time-constrained sailors of the 21st Century. So, far from bringing the original and almost-mythical gaff cutter rig with jackyard topsail back to life above a traditionally-constructed hull, the project is content to have an attractive gunter-rigged sloop – “American gaff” some would call it.

The first DB 21 to get the treatment was Naneen, originally built in 1905 by Clancy of Dun Laoghaire for T. Cosby Burrowes, a serial boat owner from Cavan.

On Dublin Bay. Dublin Bay Sailing Club granted a racing start for 2020 Tuesday evening racing starting in 2020, but it was deferred due to COVID-19.
Initially, two Dublin Bay 21s will race then three as the boat building project based in Kilrush on the Shannon Estuary completes the six-boat project.
The restored boats will be welcomed back to the Bay in a special DBSC gun salute from committee boat Mac Lir at the start of the season.
In a recollection for Afloat, well known Dun Laoghaire one-design sailor Roger Bannon said: "They were complete bitches of boats to sail, over-canvassed and fundamentally badly balanced. Their construction and design was also seriously flawed which meant that they constantly leaked and required endless expensive maintenance. They suffered from unbelievable lee helm which led to regular swamping's and indeed several sinkings.

©Afloat 2020