Exercise 2: Acceleration in .NET framework

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Exercise 2: Acceleration
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To practise acceleration, nd two other boats of similar ability. Line up, completely stationary, with one boat length between boats, and all boats an equal distance upwind. The boat in the middle loudly shouts, 3, 2, 1, GO! , and accelerates up to full speed upwind. As soon as the boats are up to speed, stop and change
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positions. There is no need to wait until one boat pops out of the front or back: this is not the purpose of the exercise. The leeward boat becomes the windward boat; the other two boats remain still so the old windward boat is now in the middle, calling the start, and the previous middle boat is now to leeward. To help the boat get up to pace, you need to bear away. Get the boat to bear away without going forward (by using the rudder but not allowing the sail to ll), so the boat does not go over the imaginary line, but is in a good position to accelerate easily. This is often referred to as getting the bow down.
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Wind
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Boats get in a line
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5.1c Three boat trigger pulling.
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Wind
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3, 2, 1 GO!
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Boats get up to speed ASAP
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5.1c (Continued)
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Top Tip: It may pay to set the rig up for slightly more power than you will need upwind, so you can keep your height and not fall into the boat to leeward of you. This also helps if the wind and waves are very disturbed around the starting area.
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Exercise 3: Distance
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In an ideal world you will hit the line at full speed. You need to know how much space this will take. The class of boat will make a big difference, but so will the conditions. However, remember both the wind and the water are likely to be confused around the starting area, so it may well take more distance than you think to get up to full speed. On your own, start next to a buoy, and from stationary see how long it takes you to get up to full speed. Now go back to the line and start the same distance back. See if you have the distance about correct.
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Light winds Go Strong winds Go
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Full speed
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Full speed
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Stopped Stopped
5.1d Timed run.
Starting
5
Top Tip: Monitor the difference in distances when the wind lulls/gusts, so that near start time you never get too far from the start line. The boat will accelerate best when starting on a close reach. When considering your start, remember that the closer you are to the favoured end, the greater your advantage (regardless of what is causing that advantage), but also the more crowded this part of the line is likely to be. If you are over, it is easy to go round the ends. However, in a black ag situation you need to be especially careful, as you are going to be more likely to have your numbers recorded. It is also possible that the favoured end of the line may not be the favoured side of the beat (for example, you may start at the port end and wish to go right, or start at the starboard end and go left). If you are not con dent of getting a good start and going the best way up the beat, you need to consider which is the more important factor.
5.2 Considering Wind and Tide
Assuming that the wind remains constant in strength and direction, and there is no current or difference in the waves, the favoured end of the line is the part which is most upwind.
Wind
Favoured end
5.2a Favoured end of the line due to wind angle.
This mark is also the favoured mark to round if the start line is a downwind gate (as this mark and the windward mark are closer to each other than the other end of the line and the windward mark). The simplest method is to go head to wind on the line and see which end of the line you are pointing at. This is much better than sailing up and down the line, which may be dif cult to do accurately, complicated by the presence of other boats and with a large line may well take some time. In reality, the wind is often oscillating, which means that the favoured end of the line may continually change. In this case you do not want to commit yourself to starting at one end of the line too early. (With a long line you may not be able to get down to the new favoured end if there is a large wind shift.) If there is a regular pattern you may well be able to predict what the wind is going to do at/shortly before/shortly after start time. (Try and get to the starting area early and track what the wind is doing.) Please note that if the windward mark is slightly offset to the left or right, this in no way affects the line bias; it simply means that you will spend more time on one tack than the other! Over the course of a day the tide will no doubt vary considerably. For example, the current may have no effect on the rst race of the day when the wind is strong and the current is weak, but may be at the end of the day the current is the most important