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yellowwelly View Drop Down
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Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Topic: dial down
    Posted: 12 Sep 13 at 9:56pm
okay, just watched the AC and saw the kiwi dial-down... what's the rules on that then?  Can we do that in fleet racing?
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mongrel View Drop Down
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Post Options Post Options   Quote mongrel Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 13 at 10:39pm
Why would you want to lose all that height against every other boat in the race?
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yellowwelly View Drop Down
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Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 13 at 10:45pm
1) you have a match race at the front
2) you have a grudge match at the back
3) the boat on port is iGRF and it's worth it to see the look on his face
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mongrel View Drop Down
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Post Options Post Options   Quote mongrel Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 13 at 10:54pm
1 Why risk a penalty/dsq when you're on for a 1st / 2nd.
2 You increase the gap between yourself and the boats in front.
3 Valid point!
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Brass View Drop Down
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Post Options Post Options   Quote Brass Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 13 at 11:24pm
Originally posted by yellowwelly

okay, just watched the AC and saw the kiwi dial-down... what's the rules on that then?  Can we do that in fleet racing?
Good reasons for and against discussed above.
 
The dial down when done in earnest is hair-raisingly dangerous in anything bigger or less robust than a Laser Pico.  That's why it's called 'Steel Balls'.
 
What deters it in Fleet racing is rule 16.2 which prohibits hunting 'down' when the opposite tack boat has decided to go below you.
 
What initiially allows it in Match Racing is that rule 16.2 is deleted for Match Racing.
 
What then limits it in Match Racing is that MR Call D6 sort of reinstates rule 16.2 in a limited way (no proper course before the start, so full dial down perfectly legal and also legal if boats do not start on close hauled courses).
 
MR CALL D6 (UMP 20 - Q2)
Rule 16.1 Changing Course
Definitions Room
Question
Blue is close-hauled on port tack and Yellow is close-hauled on starboard tack
on a leg to the windward mark. Yellow bears away to a downwind course that is
below her proper course and as a result Blue has to change course to keep clear.
There is a Y-flag. What should the call be?
Answer
Penalize Yellow. Yellow breaks rule 16.1 by not giving Blue room, namely the
space to manoeuvre in a seamanlike way.
Lord knows what the Americas Cup circus special rules say about it.


Edited by Brass - 12 Sep 13 at 11:25pm
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blueboy View Drop Down
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Post Options Post Options   Quote blueboy Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 13 at 12:09pm
Originally posted by Brass

Lord knows what the Americas Cup circus special rules say about it.


They do indeed have something special to say.

RRS AC 16.2 When sailing to a mark that is to windward, a starboard-tack yacht shall not bear away to a course that is below her proper course and more than 60 degrees from the true wind
direction if at that moment the port-tack yacht that is keeping clear by sailing a course to
pass astern of her has to immediately change course to continue keeping clear.

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yellowwelly View Drop Down
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Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 13 at 1:23pm
last night's race- race number 6 iirc....


22 minutes onwards, watch the upwind leg.... 27 min for the dial down


Edited by yellowwelly - 13 Sep 13 at 1:27pm
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gordon View Drop Down
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Post Options Post Options   Quote gordon Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 13 at 9:21am
You might like to read a recent Team Racing Rapid response call - which deals with the situation without "in effect" creating a new rule, which the MR call does:

http://www.sailing.org/tools/documents/RapidResponseTeamRacingCall2013.003-%5B15202%5D.pdf

The essence of this call is :
- a boat is sailing to pass astern when she is altering course to pass astern even if her heading does not yet pass astern
- a ROW boat can change course in a dial down as long as she gives the keep clear boat room to keep clear.

The manoeuvre is frequent in classes such as the 6m, the 5.5m and such like which typically sail in small fleets so one on one manoeuvres play an important part in racing tactics.
Gordon
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yellowwelly View Drop Down
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Post Options Post Options   Quote yellowwelly Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 13 at 9:28am
Thanks Gordon and Brass... the other area of application I thought of was in a handicap race, dialling down a boat that is faster on the spreadsheet.
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catmandoo View Drop Down
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Post Options Post Options   Quote catmandoo Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 13 at 1:13pm
its not allowed in handicap racing !!!


unless your match racing on handicap  Wink


Edited by catmandoo - 16 Sep 13 at 1:14pm
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