Tampilkan postingan dengan label americas. Tampilkan semua postingan
Tampilkan postingan dengan label americas. Tampilkan semua postingan

Selasa, 19 Juli 2016

Americas Cup Observations

Its clear that the AC/72 boats represent the most significant advances in yacht racing in a generation. While small boats like the Moth have been foiling for years and other large multihulls have been using foils that are adjustable for cant and rake, the 72s are arguably the first to combine foils, wing masts and sophisticated foil control systems in in a truly competitive package. It is also important to note that there were no significant gear failures during the regatta. That is a testament to the highly developed design, engineering and testing programs of both teams. I think this bodes well for the future of the Cup competition. Once again, I have to confess that before the event I was among those who felt that this event could very well be a dismal failure. After witnessing the spectacular racing I changed my mind in this regard.

I watched every minute of the racing on TV and think it was extremely well presented. Journeyman sports announcer Todd Harris did good job in spite of having no real yacht racing experience. Sure, he made a few goofy comments but he also frequently acknowledged his lack of experience in the sport and didnt try to come across as an expert. I thought that was a refreshing departure from previous AC announcers. NBC relied on a cast of true sailing experts to deliver insightful commentary and I thought they all combined to deliver a quality sporting product.

What about the crews? Without access to the inner workings of each team we can only speculate on what occurred within them as the regatta progressed, but the indications are that the American team had not spent nearly as many hours on the water, in the boat they would race in the finals, as the Kiwis did. This became glaringly apparent when a Team Oracle crewman fell overboard before the start of the first race. Another interesting facet of the American team was the body language of two key members of their afterguard, John Kostecki and Tom Slingsby. We dont know what that interpersonal relationship was like but it was obvious that things improved when Kostecki was replaced by Ben Ainsley. This is not to take anything away from Kostecki as he has had  a long and illustrious career as a professional sailor. But sometimes personalities dont mesh regardless of the skills and talents of the individuals and perhaps thats all there was to it. In any case, the shift from Kostecki to Ainsley made a significant difference and in my opinion was a key factor in Oracles eventual victory.

It was compelling personal drama to see the juxtaposition of confidence in the two crews as Oracle began racking up wins against the Kiwis who came within a few puffs of wind of winning the event when race 13 was abandoned with the ENZ ahead with less than a mile to the finish line. When that race was re-sailed later in the day, the Americans began their improbable march to 9 points and the Cup. As the Kiwis suffered loss after loss their confidence was replaced first by concern, then worry and finally desperation. At the end of the event the strain and despair were evident on the faces of the ENZ team, especially that of Dean Barker, whose helmsmanship could not be faulted except on the starting line where he was frequently bested by Spithill. The Kiwis made few tactical errors and only one glaring boathandling error when they nearly capsized.

It was also interesting to see how the Americans continued to improve daily while the Kiwis seemed to remain constant in terms of boatspeed. I can only attribute that to the fact that Oracle was the faster boat and it took several races for the Americans to learn how to sail it to its optimum potential, while the Kiwis had the slower boat and couldnt get much more out of her.

In the aftermath of the event, Team Oracle accepted the challenge from an Australian group for the next Americas Cup competition. We dont know what kind of boats that regatta will be sailed in, but given the spectacular racing we witnessed in AC XXXIV, Im looking forward to some incredible technological advances and exciting racing in the event to come.


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Senin, 27 Juni 2016

Americas Cup Surprises Abound

1. Oracle looked sloppy when a crewman fell overboard before the first start. No surprise there. Its not uncommon for the defender to be rusty early in the series. Without a competitive qualification series against serious competition, defenders often fail to develop the competitive reflexes and instincts that challengers which have struggled through an elimination series have developed.
2. TNZ showed up with their A game. Oracle did not.
3. The word around the yacht club bars was that TNZ had the faster boat. It sure looked that way in the first three races. But maybe thats not so. Oracle showed flashes of boatspeed, but was foiled by poor boat handling and tactical errors in the first three races. They showed something different in race four.
4. A huge surprise was the series of tactical errors Oracle made in the early going. On the other hand it was beautiful to see how they learned from the early races, adapted and found a way to win in race four.
5. Another surprise was how both crews handled the 72s as if they were dinghies. They both showed that they can create opportunities to pass. This is probably the biggest surprise of the event.
6. Conventional wisdom states that the faster boat will win. Why is that? Well, first of all its incredibly demoralizing to be on a boat that you know doesnt have the straight line performance of the competition. On the other hand, its just as empowering to know that your boat is faster than the competition. It gives you the confidence to sail more aggressively, take more risks for greater rewards.
7. It is also true that, all else being equal, he who makes the fewest mistakes wins. Oracles early errors played a large part in handing three victories to TNZ. By the same token, TNZ had a few less than stellar moments and let race four get away from them.
8. Do not underestimate Kostecki. One thing you can be sure of is that the crew of Oracle learned a lot in the first four races and, more than anyone else, John Kostecki took the measure of TNZ. It was not a fluke that Oracle won race four.
9. With the 24 knot limit on windspeed, these boats will probably survive the entire series. Still, they are experiencing apparent winds of over forty knots on the upwind legs. Im expecting more carnage before this event is over.
10. Contrary to popular opinion, including that of yours truly, this is turning into an exciting event and I am looking forward to tomorrows racing!


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Sabtu, 04 Juni 2016

Americas Cup Lessons Learned

Apologies for the long hiatus from this blog. Its been a very busy six weeks since my last post, with several projects completed on Finisterra. But first we need to consider the AC regatta and lessons we can take from the racing and the boats themselves, and what this incredible event might mean for the future of the competition.

The boats:

1. It appears that Team Oracle really did have the better boat. I had thought that the bows might be too fine, lacking sufficient buoyancy to support the wing mast. But the designers and crew were able to keep the boat on its feet throughout the event. The Kiwis chose another route with fuller, more buoyant bows. Perhaps in a bit more swell that would have paid off, but it is clear that the Yanks had the faster boat for the conditions they encountered. This is an indication that Team Oracles designers had a better feel for the expected conditions on the bay and did a better job of targeting their boat for them, while the Kiwis opted for perhaps more of a safety margin in their bows and paid the price with more weight and windage up forward. This would cost them speed especially on the upwind legs.

2. Deck layouts for both boats showed significant differences. The most striking of which were the airfoils mounted on the aft cross beam of ENZ. There was a price to pay for them in terms of weight and drag and I think its doubtful that they did enough to smooth out the wind vortices swirling off the boat to offset the negative factors. The Kiwis seemed to have a more efficient winch layout, but I noticed in the later races there were times when grinders werent in the cockpit but grinding from a position on the trampoline instead. This was an indication to me that the crew was getting a bit rattled as they racked up loss after loss.

3. Much has been said about the fact that the tactician aboard Oracle had to grind winches on each tack or jibe while his counterpart on ENZ was able to keep his head out of the boat more and focus exclusively on tactics and strategy. This was more than offset by the addition of a strategist aboard Oracle. The early races showed that communication between tactician, strategist and helmsman would be crucial and it looked like ENZ had the better operational arrangement. However, once Ben Ainsley replaced John Kostecki those lines of communication improved drastically and it was beautiful to see how well Oracles afterguard worked together, and this was a key factor in Oracles string of victories.

4. There were other design features in the boats that probably made a difference. For example the helms on Oracle were angled inward a few degrees. This probably resulted in better ergonomics for the helmsman than the directly forward facing helms aboard ENZ.

5. As far as I could tell, the daggerboards were roughly the same but of course I dont know what the actual foil sections were. Another area of vital importance is the board control systems. We dont really know what the differences were and which worked best at raising and lowering them. Nor do we know which system worked best for adjusting cant and rake of the boards. Of course we can infer that Oracles worked better since they won but it would be fascinating to see side-by-side comparisons of these systems.

Ill write more about the actual racing in a later post.
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Rabu, 24 Februari 2016

Americas Cup Day 3 Disaster for Oracle

It was a beautiful day on the Bay, with plenty of wind and lots of current at the start of the days racing. These were perfect conditions for the local boys to show the Kiwis about racing on San Francisco Bay. It was TNZs turn to enter the starting box first and they should have had the advantage, but Oracle was able to maneuver into reasonably good position just to weather of TNZ when the starting flag dropped. They accelerated faster than TNZ which was not able to establish an overlap at the first mark. Oracle looked good on that short reach, showing better straight line boatspeed and rounded clear ahead of TNZ. They maintained their lead all the way to the leeward mark. They came in on starboard tack with a comfortable lead and should have simply rounded the mark and hardened up onto a starboard beat and left it to TNZ to tack, and then keep a loose cover on them. Instead, someone in the back of the boat decided to round the mark and tack immediately. Disaster!

Anyone who has ever sailed a catamaran knows they are slow to tack. When you round a leeward mark you want to at least get back up to speed before you throw the helm over. Somehow, the brain trust aboard Oracle forgot this basic rule. So they rounded the mark and tacked all in the same maneuver, and in that moment they gave up their lead, Their thinking was that it was better to stay on the right hand side of the course to avoid the adverse current of the flood tide. Bad thinking. The first rule of yacht racing is to stay between your competition and the next mark. In a colossal brain-fade, the afterguard aboard Oracle ignored this rule and suffered the consequences. TNZ rounded the mark, hardened up on starboard tack and made short work of Oracles lead. At the first cross they were on port tack and ducked. On the next cross they were well ahead. After that there was no doubt as to who would win this race.

Ive sailed many thousands of miles as tactician and made more dumb moves than I can count, so I know how the crew of Oracle feels. In match racing it can be one bad move and your day is over, and if you still have several legs to race, that feeling of self inflicted wounds only grows. Oracle served this race up to the Kiwis on a silver platter and they knew it at the first cross, if not before. I can imagine the crew muttering under their breath as the were grinding in the sheets on that tack. Im sure the Kiwis were only too glad to snatch this race from the faltering grasp of the Yanks. It was so bad that Team Oracle decided to use their "postponement card" and skip race two today. Watching the body language on that boat, it was clear that this crew was demolished today, and it was probably a good decision for them to bail. Another pounding like that would have been devastating.

So the question is whether Team Oracle has it in them to come out on Thursday and make a race of it. I think this goes to the psychology of the game of yacht racing. Their boat is fast enough. Ive heard talk that its more complicated to sail than the Kiwi boat. Actually, all boats are more complicated to sail until the crew has practiced enough to make all the maneuvers look easy. If Oracle had another six months to sail the boat, all the maneuvers would go flawlessly. However, its possible that a demoralized crew can start thinking they are riding the slower horse and that can become a self fulfilling prophecy. If they dont fix that now, the crew will begin to expect the other guy to beat them. So the gang at Team Oracle needs to do three things if they want salvage this regatta:
1. Stop going the wrong way.
2. Keep the psychology of the crew from surrendering to defeat.
3. Make sure their strategy is one that can win, and make better tactical decisions.

Once again, I have to say that I am surprised at how tactics rather than simply nailing the start have been the deciding factor thus far in the regatta.


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Sabtu, 13 Februari 2016

Americas Cup 2013

Anybody who has even the slightest interest in the Americas Cup competition has seen the video of Team Oracles spectacular crash last October.  It is amazing that there was no serious damage to the boat except for the carbon wing, which was demolished. Until the crash, no one truly knew where the edge of the envelope was for these extremely powerful boats, so it was a learning experience for the crew of Oracle 17. The question now is whether they will overcome this setback in time to mount a competitive defense of the cup. The crash was certainly a serious bump in the road for them, but now they have a real, rather than theoretical understanding of how hard to push and, probably more importantly, that feeling in the collective gut of the crew of where the edge is. Anyone who has pushed a high performance boat, whether its a 49er or TP52 beyond the edge of control, knows that feeling. Ironically, that experience, and the experience of quickly putting a broken AC72 back together, could turn out to be a winning edge when the big boats race on the bay.

Yesterday I visited the Oracle compound at Pier 80 in San Francisco and had a chance to see the nearly completely repaired 17 as well as the newest boat, which is still under construction in the same building. While there I also got a look at the newly delivered wing mast whose basic structure was built in New Zealand for completion in San Francisco. Here are some observations:
1. It wasnt until I was right up close to both the wing and the hulls that I could truly appreciate the power to weight ratio of this boat.
2. The hulls are beautifully sculpted shapes that hardly appear to be up to the task of supporting the vast size of the rig, until you realize that the wing, which towers about 130 feet above the deck, weighs only about 3,000 pounds.
3. I was impressed by the fineness of the bows of the hulls. These are almost delicate shapes that will be extremely fast in light air, but will be more challenging in a breeze. I say that because they are very fine, with commensurately little reserve buoyancy. When you consider that the center of effort in the wing is some 65 feet or so above the waterplane, with its center of gravity likely a few feet down from there, its easy to understand that if the boat is at speed and sticks a bow or two into a wave, the chances of pitchpoling are significant. Its interesting to note that the boat that crashed didnt flip, that is, it didnt fall over sideways, it pitchpoled, or sailed over its bows. Clearly, sailing these boats will be more about power management than power generation in the conditions they are likely to encounter on San Francisco Bay.
4. The wing mast is a fairly simple shape in the profile view. It is a two-element structure, that is, a main element and a flap, and it appears to me that the real technology is in its structural design and control system.
5. Clearly the trick will be in knowing how to control the power in this rig. If there is much breeze at all during the actual races, the winner may well be the crew that has learned how to allow the rig to generate enough power without overpowering the boat and capsizing. As we have already seen, bearing off  an AC72 in a breeze will be tricky. The trimmers will have to be in perfect sync with the helmsman to ease the throttle as the boat turns away from the wind.
6. The course seems awfully short for these 72 foot boats. The marks appear to be set fairly close inshore so there will be little room on the left side of the course. The venue along the city front will make for spectacular viewing but the legs are only about 3 miles long, so these boats that are easily capable of 30 knots might take 15 minutes to get from the leeward mark to the windward mark. That doesnt leave much time for tactics, so I think the key will be to win the start and then dont crash.

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Minggu, 31 Januari 2016

Americas Cup The Plot Thickens

Just when we thought the Kiwis owned this regatta, the Yanks stepped up. As I mentioned previously, team Oracle is still on the steep part of the learning curve. They apparently took a giant stride forward over the last few days and the race results show it. Of course they still have a very steep hill to climb if they want to keep the Cup, but they are definitely improving their boatspeed, tactics and boat handling.

In race 8 team Oracle showed improved upwind boatspeed, but more important than that, they tacked much more efficiently than before. In previous races Oracle lost out to the Kiwis on nearly every tack but this time they held onto them on leg three. Near the top of that leg ETNZ, on port tack could not cross the starboard tack Oracle and attempted to tack under them, nearly capsizing in  the process. This rare boathandling mistake cost them the race and came near taking them out of the regatta altogether. No one knows if they would have won this race if not for the blown tack but the key point of this race is that Oracle managed to up their game and breathe some life into their chances.

With the next race canceled due to high winds, both teams retired to their respective corners, one to review what went wrong, the other to continue their climb up the learning curve. When race 9 got underway the next day, the Yanks showed that 8 was not a fluke. They won the start and led ETNZ at every mark.

Race 10 was a spectacular display of yacht racing. The American boat won the start but couldnt quite slam the door on the Kiwis at mark one and trailed on the run. It was on the next beat that we were treated to a tacking duel that no one prior to the event would have predicted. It was an awesome spectacle of high speed sailing, split second timing and superb boathandling. Rounding opposite marks at the windward gate the two boats split to opposite sides of the course and jibed back toward each other with ETNZ on starboard. This was a situation that has never happened before, two boats hurtling down the course at 40 knots, approaching each other on a collision course. Oracle opted to slow down and take the stern of the Kiwi boat. At this speed, the result was a 200 meter advantage for ETNZ and that was all they needed to take the race. Was the slowdown the right choice? I think that, given the situation, it was probably a better option than gybing on top of the Kiwis and getting pinned outside at the leeward mark. The question is how far ahead does the tactician have to think in order to make this the right decision. At 40 knots, the Kiwis were a long way off thirty seconds before the cross, but thats about when the decision to take their stern needed to be executed. This is sailing on a whole new level, the ultimate high speed chess game where the stakes include putting the lives of the crew on the line. Intense!




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