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Finish line, Direction from last mark definition |
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Andymac
Really should get out more Joined: 04 Apr 07 Location: Derbyshire Online Status: Offline Posts: 852 |
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Topic: Finish line, Direction from last mark definition Posted: 12 Apr 12 at 12:31pm |
We raced last night in light and variable wind.
The R.O. set a 'triangular' course with three racing marks to be left to Port.
The start line between the committee boat and an ODM was also a 'gate' to be sailed through on each lap. The race was finished (for the majority of the fleet) after 2 laps.
The issue was that the start/gate line, which also acts as the finish line, was set obliquely to the preceding mark. At the finish, in the prevailing conditions the proper course for the boats approaching the line was contra to that of the course set. The majority of the fleet 'hooked' the finish and crossed the line in the 'correct' direction whilst others did the opposite.
Personally, I hooked the finish (got a hoot from the R.O.) then unwound myself and crossed from the opposite way, just for insurance.
Debate followed in the changing rooms, I maintain that either direction was legitimate in the circumstances. I think there is case history on such a thing, does anyone know it? Gordon?? Edited by Andymac - 12 Apr 12 at 12:33pm |
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6648 |
Post Options Quote Reply Posted: 12 Apr 12 at 12:37pm |
The only time sailing through either direction is legitimate is when its not possible to judge which way through is the right way. Otherwise its always from the last mark.
Its impossible to set a hook finish because any attempt to do so would be changing a definition, which cannot be done in NOR or SIs. And yes, there is a case in the ISAF case book. |
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ColPrice2002
Far too distracted from work Joined: 25 Nov 08 Location: United Kingdom Online Status: Offline Posts: 222 |
Post Options Quote Reply Posted: 12 Apr 12 at 1:02pm |
Hi,
32.2 If the race committee signals a shortened course
(displays flag S with two sounds), the finishing line shall be, (b) at a line boats are required to cross at the end of each
lap, that line; (c) at a gate, between the gate marks.
The shortened course shall be signalled before
the first boat crosses the finishing line and Finishing is:- A
boat finishes when any part of her hull, or crew or equipment innormal
position, crosses the finishing line in the direction of the course from the
last mark, either for the first time or after taking a penalty under rule 44.2
or, after correcting an error made at the finishing line., under rule 28.1. All from the RRS 2009-2012 Colin |
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Lukepiewalker
Really should get out more Joined: 24 May 06 Location: United Kingdom Online Status: Offline Posts: 1340 |
Post Options Quote Reply Posted: 12 Apr 12 at 2:03pm |
CASE 82
When a finishing line is laid so nearly in line with the last leg that it cannot be determined which is the correct way to cross it in order to finish according to the definition, a boat may cross the line in either direction and her finish is to be recorded accordingly. |
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Rupert
Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
Post Options Quote Reply Posted: 12 Apr 12 at 2:04pm |
I'm confused. If you were sailing through the line as a "gate" on each lap, surely you just do the same for the finish?
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furtive
Posting king Joined: 30 Mar 05 Online Status: Offline Posts: 188 |
Post Options Quote Reply Posted: 12 Apr 12 at 2:46pm |
It depends how the "gate" is oriented relative to the previous mark. If in sailing the same course as on a non-finish lap you create a hook finish, then you are not finishing correctly.
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6648 |
Post Options Quote Reply Posted: 12 Apr 12 at 3:33pm |
Not necessarily, no Rupert.
Take this as an example of the common error. All marks left to port, start and finish to be between ID and 4. You finish by touching the finish line with ID on your port side and 4 on your Starboard side, because the from the last mark, 3, to the finish line, 4, is in that direction. Which way you rounded 4 on previous laps is irrelevant. Edited by JimC - 12 Apr 12 at 3:34pm |
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Rupert
Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
Post Options Quote Reply Posted: 12 Apr 12 at 4:08pm |
Ah, yes, that makes sense. In a case like that, move the finish line so ID is down screen, not across, I guess
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Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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ColPrice2002
Far too distracted from work Joined: 25 Nov 08 Location: United Kingdom Online Status: Offline Posts: 222 |
Post Options Quote Reply Posted: 12 Apr 12 at 4:18pm |
In the OP situation of 3 marks, if the line is set above the leeward mark, it's quite possible for the finish line to be pointing at the wing mark...
Then you can expect some exciting moments on the finish line. If you're doing lap timed handicap racing, then it's also difficult to move the committee boat unless all the boats are on the same lap. Colin
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Andymac
Really should get out more Joined: 04 Apr 07 Location: Derbyshire Online Status: Offline Posts: 852 |
Post Options Quote Reply Posted: 12 Apr 12 at 6:47pm |
Hi,
Thanks for your input so far...
I wish I could work out how to do one of the diagrams like JimC's to accurately depict the circumstances.
Case 82 was the one I was thinking of, thank you Lukepiewalker.
The line was set inside a 'bay' (on an inland lake) and a dogleg needed to be sailed to reach it. Compounded by a biased beat which meant boats approached from almost the opposite way. It should be noted that there was an alternative navigable channel (had anybody tried to use it) which would have given an approach to the line from the 'correct' direction, but wind direction and strength rendered it unsuitable.
The 'direction' of the previous mark was difficult to judge because it was obscured by the 'headland'. I would have estimated that the line was near perpendicular to a datum bearing from the previous mark. The wrong sided approach was very much dictated by 'proper course' but I would have thought that 'proper course' does not alone constitute the direction of the last leg over and above the compass bearing, or does it?
And yes, Colin it was lap timed handicap racing.
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