New Posts New Posts RSS Feed: Upwind/downwind right of way
  FAQ FAQ  Forum Search   Register Register  Login Login

Upwind/downwind right of way

 Post Reply Post Reply Page  <12345 8>
Author
Scooby_simon View Drop Down
Really should get out more
Really should get out more


Joined: 02 Apr 04
Location: United Kingdom
Online Status: Offline
Posts: 2415
Post Options Post Options   Quote Scooby_simon Quote  Post ReplyReply Direct Link To This Post Topic: Upwind/downwind right of way
    Posted: 27 Aug 08 at 10:34pm
For the cat open we make the gate UPWIND only and have the start line set as normal and then set the FINISH line the other side of the Ctb and (so the OOD's can keep track) you must pass thru the finish line UPWIND and we make the FINISH line an obstruction downwind. 
Wanna learn to Ski - PM me..
Back to Top
Jimbob View Drop Down
Groupie
Groupie


Joined: 05 Sep 06
Location: United Kingdom
Online Status: Offline
Posts: 77
Post Options Post Options   Quote Jimbob Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 08 at 11:16pm
I was impressed by the courses at the Olympics. I think in the earlier series races (correct me if I'm wrong) there was a triangle for the first round then an UW/DW for the second, both going through a leeward gate, then a reaching finish from the gate. I also like the idea of an offset DW leg clear of the beat, but how practical is that for club racing?.

Nonetheless, I'd like to see these types of courses given a try at Club races. At Grafham we have an upwind gate so that everyone does (at least) 3 tacks and goes up the middle. Very predictable after the first beat.

But what are the drawbacks?
Jimbob
Back to Top
Pierre View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 15 Mar 04
Location: United Kingdom
Online Status: Offline
Posts: 1532
Post Options Post Options   Quote Pierre Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 10:02am

Originally posted by rogerd

Interesting debate.

Anyone thought of something radical like a trapezoid course then you would
all be going in roughly the same direction on the same bit of water...no
conflict.

Dammit Rog, I think you might be onto something there

 

 

Back to Top
Phil eltringham View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 04
Location: England/Hitchin
Online Status: Offline
Posts: 1105
Post Options Post Options   Quote Phil eltringham Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 11:26am

What I have found works, 'reasonably' well in situations near the bottom mark is if the boat heading upwind calls to the one heading downwind not only that they are there (this can be almost as unhelpfull as helpfull) and have rights, but whether they should hot up and cross or bear off and duck.  Now the success of this is mostly down to how good the guy going upwind is at judging the relative motions of the boats, and a general gentlemans agreement within the fleet that you suggest the option that will mess the downwind boat up the least.  But in general the better sailors are at the front and as such 'should' be better at making these calls (I know for one I am pretty bad at it so if I'm lucky enough to be leading I tend to just keep out of the way).  Its not great, but a bit of helpful consideration does seem to work for the most part.  After all, it is just for fun at the end of the day. 

On a different note, trapezoids may solve this problem (and I enjoy a decent 2-sail reach as much as the next man) but from a racing point of view they really are very boring, the main reason for running windward/leward is to remove the procession of round the cans.  Just my 2-pence on the subject. 
----watches for volley of abuse----

FLAT IS FAST!
Shifts Happen
Back to Top
RodB View Drop Down
Groupie
Groupie
Avatar

Joined: 01 Sep 05
Location: United Kingdom
Online Status: Offline
Posts: 75
Post Options Post Options   Quote RodB Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 1:26pm
Racing at the recent Torbay regatta in a 15kt breeze on the Monday
the B14's (they had the first start with the 12's) on a windward /leeward
course, were racing downwind to the leeward mark, which was
positioned just to windward of the start line.
We arrived just in time for the fast handicap to start.
As you can imagine the path the the leeward mark was a bit tricky, as
there was not much space between the approaching close hauled boats
going to windward.

In this instance I don't think any of them would have honoured the
'gentlemans agreement of letting the boat thro with the kite up, as they
were all desperately trying to gain height to windward compared to the
other fast handicap boats.

Later on in the race it was easier as all the boats were spaced out more
so you could comfortably gybe between the close hauled boats, but you
had to really think ahead what was going on.

I think in this instance the only way to avoid this situation was for the
PRO to make a judgement as to how windy it is and position the
windward mark far enough away so that the faster assymetrics arrived
back at the leeward mark after all the classes had started and were 1/2
way up the first beat, so there was some distance between the close
hauled boats, enabling easier gybing thro them.

After saying this, we were still caught out later in the same race, as we
sailed down on starboard towards a line of port gybe boats

The fast handicap boats were using a triangle / sos / triangle format
using the same windward and leeward marks as our fleet- heading from
the wing mark to the same leeward mark.

We repeatedly shouted stb'd but not one of them wanted to give way
and gybe or slow down. Eventually we had to crash gybe, accelerate
away and put in 3 gybes to get back on the layline for the mark.

Whilst the subject of fixed bowsprits is mentioned, the 12's were a real
pain on the start line. The line was heavily biased for 2x starts so that
you could hardly cross the pin end on starboard, so the obvious thing
was to flip over onto port and cross. However because it appeared the
12's liked to start by the committee boat it was impossible to do this
with risking being impaled by the fixed bowsprits. so we ended up
gybing and going around the back of them cause it was safer.

Thoughts from the 12 fleet??
Back to Top
Iain C View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 04
Location: United Kingdom
Online Status: Offline
Posts: 1113
Post Options Post Options   Quote Iain C Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 1:53pm
RodB, although I did point out the fixed bowsprit 12 v 18 jousting in the original post for dramatic effect, the bowsprits are pretty irrelevant really!  If the 18's had been reaching down under traditional kites and had a head on with a 12 with no bowsprit, it would still make a mess, possibly a worse one!

I don't really get your point to be honest.  Are you saying that if the boat had not had a fixed pole you would have cut it so close to have had a serious risk of a collision (bearing mind you are on port here)?  What difference does the pole make?  It's only a short boat, and even with the pole on just a little longer than an Flying 15?  Are you somehow saying that other boats with a fixed pole out the front affects your startline tactics or are you asking why the 12s did'nt spot the shift and start on port?

The question of this thread is big kites, blind spots and lack of manoevrebility, not fixed poles or slidey ones!


(Edited to add...I was'nt sailing...bit broken at the moment so I was taking pictures...gutted!)


Edited by Iain C
RS700 GBR922 "Wirespeed"
Fireball GBR14474 "Eleven Parsecs"
Enterprise GBR21970
Bavaria 32 GBR4755L "Adastra"
Back to Top
marke View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 16 Jun 08
Location: United Kingdom
Online Status: Offline
Posts: 211
Post Options Post Options   Quote marke Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 2:00pm
Rod - you should have risked the tack - the 12's were going so slowly upwind that you would have made it easily

flame away ;-)
Back to Top
RodB View Drop Down
Groupie
Groupie
Avatar

Joined: 01 Sep 05
Location: United Kingdom
Online Status: Offline
Posts: 75
Post Options Post Options   Quote RodB Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 4:44pm
yes marke
i realised later when the 12 who called starboard on me was going as
fast as a topper to windward and was 10 metres away i could of easily
tacked over to port and crossed him instead of gybing away and going
behind him. It was just that the end of the fixed bowsprit was hard to
judge and when you hear a call of starboard from behind your mainsail,
that last thing you want is to have the pole poke thro your sails

So yes IainC the fixed pole did affect my tactics on the start line i would
of not normally have been unduely worried being on port on the start
line. I wasn't worried why the 12's hadn't spotted the shift, my point was
because there was such a large bias it effectively meant the 12's were
almost parallel to the start line and so made it tricky to cross on port to
get past them - slightly off topic tho.

My overall point was that if the PRO made the course large enough it
would attempt to prevent high stress conflict situations we encountered
last weekend - the mad start line dash vs 1st leeward mark rounding.
It would be useful if other competitors and race Officers would
recognise the difficulties of the massive blind spot to leeward flying the
kite. I'm not asking to for other boats to get out of the way and scatter
like chickens, but instead, not to put in a last minute tack or try to luff
us - Why do they do that??

RodB
ex B14 racing fanatic, now gone back to enjoying windsurfing
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662
Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 4:47pm
Originally posted by RodB

We repeatedly shouted stb'd but not one of them wanted to give way
and gybe or slow down.

So why didn't you protest?

Originally posted by RodB

it was impossible to do this
with risking being impaled by the fixed bowsprits. so we ended up gybing and going around the back of them cause it was safer.

So what's the difference between a 12 sprit and say a keelboat bow? Either way you have to go round the back of a ROW boat if otherwise you risk hitting it.
Back to Top
Iain C View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 16 Mar 04
Location: United Kingdom
Online Status: Offline
Posts: 1113
Post Options Post Options   Quote Iain C Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 08 at 5:08pm

Rod I kinda see your point if you were going upwind, came across a 12 but had no idea it had a fixed prod until the last second thorugh poor viz etc, or if you saw sails underneath, and did not realise they belonged to a 12 and got tangled up in the bowsprit...fair enough.  But if you knew it was a 12 and had a bowsprit and still had issues on the startline then I'm struggling a bit, that would be the same as luffing a B14 and not giving it time and opportunity to respond as you could not work out where the wings ended!  Anyway, it's a valid enough comment although not really what the purpose of the thread was about.  The facts are that upwind a 12 will not point like a B14 in my experience, the guys probably wanted to come off the line on "safe starboard", and they'd also made some duff rig choices all weekend hence some seriously slow upwind performance at times (oh how easy it is when you're not actually sailing)

Anyway, to show we're all friends I think I got some pictures of your boat which I'll PM you at some stage...

RS700 GBR922 "Wirespeed"
Fireball GBR14474 "Eleven Parsecs"
Enterprise GBR21970
Bavaria 32 GBR4755L "Adastra"
Back to Top
 Post Reply Post Reply Page  <12345 8>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy