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starboard rounding rights |
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ClubRacer
Far too distracted from work Joined: 26 Sep 15 Online Status: Offline Posts: 210 |
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Topic: starboard rounding rights Posted: 21 Apr 19 at 7:17pm |
From the diagram below what rights do each boat have at stages 1/2/3
My interpretation is port/starboard until yellow is passed head to wind and on its new course at which point I'm unsure if they acquire mark room or have zero rights at all as windward boat Edited by ClubRacer - 21 Apr 19 at 9:03pm |
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Brass
Really should get out more Joined: 24 Mar 08 Location: Australia Online Status: Online Posts: 1146 |
Post Options Quote Reply Posted: 21 Apr 19 at 9:52pm |
@1 Y, on port is required to keep clear of B on starboard (rule 10), neither boat has reached the zone so there is no question of rule 18 applying.
@2 Y, still on port is required to keep clear of B still on starboard (rule 10), both boats are on a beat to windward, on opposite tacks and rule 18 does not apply (rule 18.1a). @3 Y, on the same tack as B and overlapped to windward is still required to keep clear of B to leeward. Boats are no longer on opposite tacks, and are in the zone so rule 18 applies. Boats were neither overlapped nor in a clear ahead/astern orientation when the first of them reached the zone, so rule 18.2b and c do not apply. Rule 18.2a applies, B, the outside overlapped boat is required to give Y, inside, mark-room, and if, while sailing within the mark-room to which she is entitled, Y fails to keep clear of B, she shall be exonerated (rule 21a).
Edited by Brass - 21 Apr 19 at 10:23pm |
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ClubRacer
Far too distracted from work Joined: 26 Sep 15 Online Status: Offline Posts: 210 |
Post Options Quote Reply Posted: 21 Apr 19 at 10:00pm |
but i presume Y still has to give room for B to keep clear initially as per rule 15
Would be hard in a protest hearing to differentiate between Y not giving time for B or B not giving space for Y
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Brass
Really should get out more Joined: 24 Mar 08 Location: Australia Online Status: Online Posts: 1146 |
Post Options Quote Reply Posted: 21 Apr 19 at 10:30pm |
At no time is Y a right of way boat: she never has any obligations under rules 15 or 16, nor is she ever overlapped outside with mark-room obligations under rule 18. At no time is Y required to give room to B to do anything.
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RS400atC
Really should get out more Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
Post Options Quote Reply Posted: 22 Apr 19 at 3:36pm |
Yellow is failing to keep clear of Blue when she tacks, as Blue could have hit her just by luffing a little. If you re-imagine the animation with Y able to tack while keeping clear of B, the whole thing becomes a non-event. Until you add in the other half dozen boats...
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Sam.Spoons
Really should get out more Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3398 |
Post Options Quote Reply Posted: 22 Apr 19 at 5:06pm |
But is Blue allowed to change course to prevent Yellow from keeping clear (which is what a luff would be)?
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ClubRacer
Far too distracted from work Joined: 26 Sep 15 Online Status: Offline Posts: 210 |
Post Options Quote Reply Posted: 22 Apr 19 at 5:59pm |
The ability to animate it exactly how it happened on the water is limiting. Yellows tack was completed before the overlap was established.
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RS400atC
Really should get out more Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
Post Options Quote Reply Posted: 22 Apr 19 at 6:10pm |
True, while they are on different tacks, the definition of keep clear does not allow for the RoW boat to be able to alter course. However, the boat on port's entitlement to be able to keep clear does not mean the starboard boat has to allow it room to tack. If the port boat can only keep clear by aborting its tack and carrying on on port, it would probably have to do so? So blue can head up at least until yellow has no option but to complete the tack? In practice, if this becomes a protest, it will be a case that blue alters course believing yellow has tacked too close. It will be different views of exactly how the boats were positioned.
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RS400atC
Really should get out more Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
Post Options Quote Reply Posted: 22 Apr 19 at 6:18pm |
As drawn, blue doesn't have to do anything to give yellow mark room, except perhaps bear off a small amount as Y tacks again to round the mark. Imagine if Blue track were half a boat width to windward, it would then have to actively give mark room as from the moment Y passed head to wind?
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
Post Options Quote Reply Posted: 22 Apr 19 at 6:22pm |
Subject to 18.2.f
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