<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>sailing &middot; Arguable Intelligence</title><link>https://ojmason.net/tags/sailing/</link><description>Personal musings on computational linguistics, AI, sailing, and generated fiction.</description><language>en-gb</language><managingEditor>Oliver Mason</managingEditor><webMaster>Oliver Mason</webMaster><lastBuildDate>Tue, 23 May 2017 20:14:21 +0100</lastBuildDate><atom:link href="https://ojmason.net/tags/sailing/index.xml" rel="self" type="application/rss+xml"/><item><title>Keeping up Motivation</title><link>https://ojmason.net/keeping-up-motivation/</link><guid isPermaLink="true">https://ojmason.net/keeping-up-motivation/</guid><pubDate>Tue, 23 May 2017 20:14:21 +0100</pubDate><category>sailing</category><category>motivation</category><description>Last Saturday I took part in our weekly regatta at the sailing club. The first race on a Saturday is an average lap time one, where all boats start at the same time, and then sail for an hour. There&rsquo;s a yardstick system to work out which boat sailed the fastest, taking into account the inherent speed differential of the different boats. I was sailing in a Laser, which is a medium fast boat given the other ones that were participating in this race.</description><content:encoded><![CDATA[<p>Last Saturday I took part in our weekly regatta at the sailing club. The first race on a Saturday is an average
lap time one, where all boats start at the same time, and then sail for an hour. There&rsquo;s a yardstick system to
work out which boat sailed the fastest, taking into account the inherent speed differential of the different boats.
I was sailing in a <a href="https://en.wikipedia.org/wiki/Laser_(dinghy)">Laser</a>, which is a medium fast boat given the
other ones that were participating in this race.</p>
<figure><picture>
    <source type="image/webp" srcset="/keeping-up-motivation/laserracing_hu_c36543420c1bfb7c.webp">
    <img src="/keeping-up-motivation/laserracing.jpg" width="1004" height="328"
         alt="Saturday Afternoon Racing on Edgbaston Reservoir"
         loading="lazy" decoding="async">
  </picture><figcaption>Saturday Afternoon Racing on Edgbaston Reservoir</figcaption></figure><p>I had a decent start, especially since I&rsquo;m still fairly new to Laser sailing and my boatspeed is not as good as
it could be yet. And my sail is fairly ancient. But it was nice and breezy, and as the field split into two groups,
I managed to stay at the top of the slower group (while the much faster dinghies plus our best club Laser sailor
were disappearing in the distance).</p>
<p>However, once I got away from the second group I ended up in &rsquo;no man&rsquo;s land&rsquo;, in a zone between the two fields. Not
really fast enough to catch up with the faster boats, but also far enough away from the rest of the field that I
lost contact. And the inevitable happened: I lost focus, didn&rsquo;t really have anything to gauge my speed, and ended
up being caught by the other boats, unable to keep my position.</p>
<p>In addition to that, I rounded one of the marks the wrong way, so technically sailed the wrong course, and had to
retire. As I noticed that during the race, I guess that might also have broken my concentration.</p>
<p>I&rsquo;m not quite sure what to do in this situation. I clearly do better if I have something to compare myself to. Maybe
I should have looked at my watch occasionally to see how long it&rsquo;d take me to do one lap? Of course this doesn&rsquo;t
work perfectly, as the conditions are different all the time with wind shifts and gusts, but it&rsquo;d give me an idea
whether I was faster or slower than previously. Maybe it&rsquo;s just lack of awareness of the boats around me &ndash; when
sailing you need to look at many different things, and it is easy to concentrate too much on the sail settings, but
then lose sight of the overall picture.</p>
<p>In general it&rsquo;s always dangerous to try and measure/quantify performance too much, as it&rsquo;s easy to confuse the metric
with the intended performance. But obviously some of that is necessary just for orientation purposes. If you get lost,
you lose!</p>
]]></content:encoded></item><item><title>Mark Rounding</title><link>https://ojmason.net/mark_rounding/</link><guid isPermaLink="true">https://ojmason.net/mark_rounding/</guid><pubDate>Thu, 11 May 2017 09:27:46 +0100</pubDate><category>sailing</category><description>(This is a blog post on sailing. Hence it might contain a number of weird terms and concepts. But sailing is really very easy and straight forward. It&rsquo;s only when you are racing that it gets a bit more complicated with rules and tactics!)
At Midland Sailing Club we race regularly, and sometimes with a mass start (where all boats start at the same time) rather than a staggered start where the slower boats start first, and the faster boats later (because they are faster and are expected to catch up). As I haven&rsquo;t been racing for very long (just over a year now), I&rsquo;m usually somewhere towards the end of the field. But I&rsquo;m slowly improving and working my way forwards.</description><content:encoded><![CDATA[<p>(<em>This is a blog post on sailing. Hence it might contain a number of weird terms and concepts. But sailing
is really very easy and straight forward. It&rsquo;s only when you are racing that it gets a bit more complicated
with rules and tactics!</em>)</p>
<p>At <a href="http://www.midlandsailingclub.org.uk">Midland Sailing Club</a> we race regularly, and sometimes with a
mass start (where all boats start at the same time) rather than a staggered start where the slower boats start
first, and the faster boats later (because they are faster and are expected to catch up). As I haven&rsquo;t been
racing for very long (just over a year now), I&rsquo;m usually somewhere towards the end of the field. But I&rsquo;m slowly
improving and working my way forwards.</p>
<p>Yesterday we had our first race in the Flag Officer Series, which is an average lap race, so all boats start at the
same time, and the Race Officer measures how fast they go round the course. Each class of boat has a handicap, so that
slower boats get a bonus over faster boats (because they are slower). The photo below shows the field just before the
start. I am in the boat with the blue sails (an <a href="https://en.wikipedia.org/wiki/Enterprise_(dinghy)">Enterprise</a>).
As you can see, the majority of boats are to the right of the start line, whereas I am on the left. The little yellow
buoy with the flag is the end of the start line; the other end is the committee boat, which is obscured by the raft
of boats in front of it.</p>
<figure><picture>
    <source type="image/webp" srcset="/mark_rounding/wedrace_small_hu_cd103a13df05bd85.webp">
    <img src="/mark_rounding/wedrace_small.jpg" width="400" height="266"
         alt="Wednesday Evening race (by @ikonic_exposure)"
         loading="lazy" decoding="async">
  </picture><figcaption>Wednesday Evening race (by @ikonic_exposure)</figcaption></figure><p>Usually one end of the start line works better than the other, and that seemed to have been the case yesterday, as
most of the boats were at that end. However, one disadvantage is that your wind gets messed up when there are lots of
boats clumped together, and wind is basically your fuel. I started on the left, which was less advantageous, but I had
&lsquo;clean air&rsquo;, as there were few other boats around me. As a result, I had an excellent start, and was going really fast
in front of the fleet.</p>
<p>As the Enterprise is not the fastest of boats, I was not first at the windward mark, but I was in the top group. Now,
normally when I reach a mark, there are no other boats there (because they&rsquo;ll have gone already), but this time there
was quite a group. I came in on port tack, so did not have right of way. And consequently I had to make sure not to
hit any other boats or get in their way, so I had to sail in a circle and join the end of the queue. I lost a lot
of places and was suddenly third from the bottom or so. Not good.</p>
<p>Why did I do that? I hadn&rsquo;t really been in that situation before.
If I had realised that I was at the mark in the top group, I should
have gone further to the right hand side and come in to the mark
on starboard tack (having right of way).  Then all would have been
well. But because I am so rarely in that situation, I didn&rsquo;t plan
ahead. Bad tactics. Sad!</p>
<p>So while I didn&rsquo;t do very well in that race in the end, I am still pleased with the first part, and I think I learned
a lot. The main thing is to plan ahead when approaching a mark, to take into account that there might be a lot of other
boats that I need to take care of, and to have some idea of what tactics to follow. The other main point is not to
worry too much about start line bias. This, however, is the main thing you are told about racing: work out which
end of the start line is favoured (ie closer to the wind), and start from there. But that&rsquo;s what most people do, so
the favoured end is thus the busiest, and
sailing in a big cluster of boats is slow. I started slightly behind at the unfavoured end, but was able to sail much
faster and unimpeded in clean air, so the fact that I started a few boat lengths behind the field did not matter at
all. I suspect for most people it will be the same. It&rsquo;s also less stressful, as you don&rsquo;t have to worry about
colliding with other boats on the start line! This is recommended by the
<a href="http://www.impropercourse.com/2013/05/sailing-in-middle-of-fleet-clean-air.html">Improper Course Blog</a> where I got
the idea from. Or rather, the reassurance not to have to do what everybody else does (and tells you to do!)</p>
<p>I will have a chance to try that out over the next two weekends, where I will be at two Enterprise Open meetings
(where we all race in the same class of boat) at Barnt Green and Tamworth. Mass start, though probably fewer boats.
And then I will have a proper think about tactics in advance!</p>
<p>PS: We came 14th out of 21 boats, which is still quite a good result. Pretty much everybody who ended up ahead of me is
a better sailor, and I even beat some of the more experienced racers in their fast boats. So I&rsquo;m pleased, especially
given the places I lost at the first mark!</p>
<p>(<em>Photo (C) by <a href="http://www.daniel-sturley.com/index.html">Daniel Sturley</a>, used with permission</em>)</p>
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