Forum: The Racing Rules of Sailing

A Puzzler for the Holiday

P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
So .. this is a different sort of challenge.  It's a bit of a 'dance on the head of the pin' (I know .. surprise, surprise coming from me) ... but here it goes .... 

Rule 30.1 states:
30.1. I Flag Rule 
If flag I has been displayed, and any part of a boat's hull, crew or equipment is on the course side of the starting line or one of its extensions during the last minute before her starting signal, she shall sail across an extension to the pre-start side before starting.

... and ...

Rules 30.2/3/4 all use the following language, with different consequences ...
If flag [Z/U/Blk] has been displayed, no part of a boat’s hull, crew or equipment shall be in the triangle formed by the ends of the starting line and the first mark during the last minute before her starting signal.

Now, looking at the above rules, they are structured completely differently ..  
  1. 30.1's structure is .. 
    1. "If I flag .. and any part of boat .. is on course side .. [then] she shall sail across ...".
  2. 30.2/3/4's structure is .. [emphasis added] 
    1. "If flag Z/U/Blk, [then] no part of boat ... shall be in the triangle .. "
  
So here are the (eye-roll deserving) questions .. I ask that you defend what ever position you take by siting the rules that apply or cases that influence the interpretations of the applicable rules.

Questions:
  1. When Z/U/Blk flag is flown, since the rule states that no part of the boat shall be in the triangle in the last min .. if a boat is approaching them but not approaching to start .. 
    1. Is the triangle an excluded area?  (why/why not)
    2. Is the triangle an obstruction in the last min? (why/why not).
  2. Since the triangle intersects the RC and the pin on certain sides, is the opposite side of those marks "required sides" (why/why not).
  3. If you find logically that there there is a required side to the starting marks in the last min when Z/U/Blk is flown, can 18 apply between boats as they approach them .. if they are not approaching them to start?



Created: 19-Dec-23 22:53

Comments

Geoff Chambers
Nationality: Australia
0


Curiously we've had reason to ponder this exact 'anomoly' and we decided the triangle is not an exclusion zone or a mark of the course. the way the flag rules are written ostensibly makes sailing into the triangle an option albeit with severe adverse consequences. ie the rule does not say you shall not sail in the triangle, rather it gives consequences of doing so. 

Splitting hairs perhaps but my take is that the triangle is not a navigation hazard nor a mark and is therefor not an obsturction so the rules for rounding or passing marks and obstructions do not apply other than the marks as start marks.


Created: 19-Dec-24 00:25
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
Geoff, you aren’t playing by the rules of the challenge ;-) (arguments are a bit vague). 

How is the language found in 30.2/3/4 different from the common language found in SI’s describing “exclusion zones”?  ... for example ... “no part of a boat shall cross the zone bounded by buoy A, B, C etc....”
Created: 19-Dec-24 00:52
P
John Allan
Certifications:
  • National Judge
  • Regional Race Officer
0
When Z/U/Blk flag is flown, since the rule states that no part of the boat shall be in the triangle in the last min .. if a boat is approaching them but not approaching to start .. 
Is the triangle an excluded area?  (why/why not)

The phrase 'excluded area' is not a term known to the RRS. The term has no meaning.  It is irrelevant to any rules dispute whether it is an 'excluded area' or not.

Is the triangle an obstruction in the last min? (why/why not).

The triangle area is not an object that a boat could not pass without changing course if shew were sailing directly towards it and one of her hull lengths from it.

It is not an area designated in the SI as an obstruction.  To 'designate' and area as an obstruction requires clear express words in the SI like 'the triangle ... is an obstruction'.  An area cannot be 'designated' by inference.

The triangle area does not comply with the definition of Obstruction and is not an obstruction.

Since the triangle intersects the RC and the pin on certain sides, is the opposite side of those marks "required sides" (why/why not).

The phrase 'required side' is not (since 1995) a term known to the RRS.  The term has no meaning.  it is irrelevant to any rules dispute whether there are any 'required sides' or not.

If you find logically that there there is a required side to the starting marks in the last min when Z/U/Blk is flown, can 18 apply between boats as they approach them .. if they are not approaching them to start?

'Required side' has no meaning.  Unnecessary to answer.
Created: 19-Dec-24 14:01
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
'required side'

Created: 19-Dec-24 14:54
Eric Rimkus
Certifications:
  • National Race Officer
  • National Judge
0
1-1) Sure, she cannot go into that area without incurring a penalty, but excluded area is not a term of the RRS so it is irrelevant
1-2) No, an "area" is not an "object", so does not satisfy the definition Obstruction
2) No, the "required side" is the side that satisfies 28.2(a)
3) No, per Section C preamble
Created: 19-Dec-24 22:25
Geoff Chambers
Nationality: Australia
0
Angelo I hope this makes amends:)

Q1. 1. The triangle is not an “excluded area” unless it is named as such. Excluded area is not a defined term in the rules and although its an expression often used in SIs it is only given meaning once a requirement is set out or a penalty is applied in which case it describes an area in relation to which the requirement or penalty applies. The requirement may be stay out of, or to remain in, the exclusion zone or area and for a specified time period. For instance the for the start of the Rolex Sydney to Hobart the SI’s specify an exclusion area that competing yachts MUST sail through. It is the spectator craft that are excluded from the exclusion area.
 
So first answer is the triangle is not an excluded area as the rules does not describe it as such and as ‘excluded area’ is not a defined term in the rules, there is no definition for it to fit. It is therefore not an excluded area.
 
Q1.2. The triangle is not an obstruction because to be an obstruction under the definition;
i.               “an object that a boat could not pass without changing course substantially.” As the triangle is not an object it does not meet this definition.
ii.              “An object that can be passed safely on only one side” – the triangle can possibly be passed safely on either side but in any event is still not an “object”
iii.            “an area so designated in the sailing instructions” (as an obstruction) – the rule is not the sailing instructions so is does not fall within the definition.
 
Further; Appendix L includes SI 10 for this purpose however the question is confined to whether the wording of rule 30 triangles constitute an obstructions however the rule is not the Sis and therefor the triangles described in the rule are not obstructions.
 
Q2. Since the triangle intersects the RC and the pin on certain sides, is the opposite side of those marks "required sides" (why/why not).
 
The definition for “mark” is confined to something given that status in the sailing instructions as having a “specified side” so as the flag rules are not the SIs the rule cannot give something the status of a mark.
 
The pin has a required side only in the context of starting however rule C room at marks and obstructions do not apply when approaching the line to start.
 
Prior to approaching to start, the pin has no required side as a mark so the question is whether it is an obstruction. As it is surrounded by navigable water and can be passed "safely" (per definition) on either side it is not an obstruction and the triangle does not make it an obstruction because the triangle itself is not an obstruction. Neither 18 or 19 apply.
 
Q3. Not a required side per Q2 therefor does not arise.
Created: 19-Dec-24 23:47
Philip Hubbell
Nationality: United States
Certifications:
  • Club Race Officer
  • Judge In Training
0
You are defining the triangle by the centerpoints of the starting marks.
That means a properly starting boat enters the triangle inches before crossing the starting line when the SI defines the line as the course side of the marks.
Created: 19-Dec-25 01:20
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
Philip re: “You are defining the triangle by the centerpoints of the starting marks.”

The drawing is supposed to be a graphical representation of the words used in 30.2/3/4, which is “ends of the starting line”.  Therefore, being across the line will be the same as the base of the triangle, however that is defined in the SI’s or called by the linesman.   

That triangle base will intersect the pin-object [on the course-side]  some place/manner and that intersection will [might appear to] have the effect of describing a side of the pin a boat shall not pass in the last min. 
Created: 19-Dec-26 13:49
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
Looks like everyone who wanted to chime-in has .. so this is what I had in mind when I posted the "puzzler". 

I tried to warn everyone that this was "a different sort of challenge" .... because I put a couple "red herrings" in there to hopefully make you say, 'hmmm .. wait a second here .. " (which didn't fool anyone). 

This is how I would answer it, which incorporates answers already given.  I'm not saying what follows is "correct" (since I made the entire thing up) .. so if you feel my solution is in error somehow, please provide corrections.

Here I go .. 

Q1. When Z/U/Blk flag is flown, since the rule states that no part of the boat shall be in the triangle in the last min .. if a boat is approaching them but not approaching to start .. 
  1. Is the triangle an excluded area?  (why/why not)
  2. Is the triangle an obstruction in the last min? (why/why not).

This was the first distraction and it didn't fool anyone.  As many posted, the term "excluded area" doesn't mean anything in the RRS, so calling it such has no effect.

In several different past threads, we've discussed the effect and effectiveness (or lack thereof) of SI's that define/section-off water that boats are not allowed to sail into.  SI's can call them whatever they want .. "exclusion zones, restricted area, no-sail zones, etc...", but unless these SI's are carefully worded, they may not have the effect the authors intended and if these areas are not specifically designated as an Obstruction, then they are not obstructions unless they meet the definition of obstruction for other reasons.

  1. Is the triangle an "excluded area"?  [No .. that isn't a defined term in the RRS that one can apply]
  2. Is the triangle an obstruction in the last min? [No .. as presented, no SI has designated it as such]

Q2. Since the triangle intersects the RC and the pin on certain sides, is the opposite side of those marks "required sides" (why/why not).

This is another "red herring". 

"Required Side" (or some derivation of that phrase) occurs several places in the RRS in relation to a Mark .. 

Let's break-up the word into "required" and "side" .. and take "side" first.

"Required/Specified/Same Side" all have the word "side" in them.  

In the RRS, the object/noun to which the word "side" refers depends upon how and where it is being used.

  • "course side" is in reference to either a starting or finishing line.
  • "pre-start side" is in reference to a starting line.
  • "one side" in Obstruction is relative to the "object".
  • "Leeward and Windward side" and starboard/port side are in relation to the boat referenced.

When "required side" is used in relation to a mark, it is always in the context of a larger phrase that includes a verb.  These verbs are "round, pass, or leave". For instance Mark-Room's use .. 

"Mark-Room: Room for a boat to leave a mark on the required side."

These verbs refer to the action of a boat and therefore, required/specified/same side, when referring to marks, though the word "side" is always closest to the work "mark" and we commonly associate the "side" to the mark .. this mark "to port" .. that mark "to starboard" ..,  it is not the side of the mark but the side of the boat(s) being referenced as these boats 'round', 'pass' or 'leave' it.

So, thinking about a "side of the mark" in the drawing is bogus, it's the side of the boat.  In the drawing below, both boats are passing the mark outside of the triangle on opposite sides.

Since there is no "side" imposed by the existence of the 30.2/3/4 triangle, therefore there is no required side.






Q3. If you find logically that there there is a required side to the starting marks in the last min when Z/U/Blk is flown, can 18 apply between boats as they approach them .. if they are not approaching them to start?

Since we didn't "find [logically] that there there is a required side", the answer to 3 is also NO
Created: 19-Dec-28 15:12
P
John Allan
Certifications:
  • National Judge
  • Regional Race Officer
0
Angelo,

First I defer to your better research about 'required side'.

Before studying your complete solution above, here is my solution.

Excluded or Prohibited Areas

Areas in which boats are prohibited or excluded from sailing by the Sailing Instructions, are not, by inference obstructions at which rule 19 applies.  Those areas may be (and probably should be) designated as obstructions in the Sailing Instructions, but this requires clear express words in the SI.

The triangle specified in rule 30 rules is not an obstruction, unless some unusual Sailing Instruction so designates it, and rule 19 does not apply to it.

Rule 28.2 Required Side

Rule 28.2 refers to required side, but only in the period after a boat begins to approach the starting line to start.  The reference to ‘required side’ in rule 28.2 is not relevant to boats approaching a starting line but not approaching it to start.

Mark-Room at starting marks under rule 30

1.    Preamble to Section C disapplies rule 18 Mark-Room at starting marks from the time boats are approaching them to start.

2.    Rule 18.1 provides that rule 18 may apply between boats when they are required to leave a mark on the same side.

3.    Except under Rule 30 starting conditions, boats, before approaching starting marks to start may leave starting marks on either side and rule 18 does not apply.

4.    Rules 30.2, 30.3, and 30.4, by prohibiting boats from passing inside the starting marks during the last minute, require boats to leave them on a particular side.

5.    Rule 18 may thus apply when rule 30.2, 30.3 or 30.4 is applied, during the last minute, if a boat is approaching a starting mark, but not approaching it to start.  This might occur early in the last minute when a boat might be positioning herself prior to approaching the mark to start.

6.    Just as a boat at a race committee signal vessel, not approaching it to start, is entitled to rule 19 room, a boat approaching a starting mark that is not an obstruction but is required to be left on a particular side by rule 30.2, 30.3, or 30.4 may be entitled to mark-room.

7.    One might hazard a guess that he drafters of the rules had in mind that a boat approaching a starting mark in the last minute would always be ‘approaching the mark to start’, and protest committees might make this presumption, unless convinced otherwise.

8.    There is another problem with treating starting marks as eligible for mark-room before boats have started, and that is that boats approaching starting marks (under rules 30.2, 30.3 or 30.4) from the course side are required to leave the mark on the opposite side to boats approaching from the pre-start side, which then disapplies rule 18, in accordance with rule 18.1.

9.    So let’s suppose that a boat approaching a starting mark, in the last minute under a rule 30.2, 30.3 or 30.4 start, but not approaching it to start is entitled to mark-room.  The question arises, does the wording of rule 30.1, which differs from that in rules 30.2, 30.3 and 30.4, in that it does not prohibit boats from sailing in the triangle, but only provides a consequence, well short of disqualification, also require boats approaching starting marks in the last minute but not approaching them to start, to leave the starting marks on a particular side.

10.  I’m inclined to think that rule 30.1 is not strong enough to require boats to leave starting marks on any particular side and that thus there is no possibility of mark-room at a starting line under rule 30.1.



Created: 19-Dec-29 00:17
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
John A .. here's my take on the numbered-points you brought up.  I'm going to take it in a sort of ad-hock holistic manner instead of one by one in order.

Last one first .. 
10.  I’m inclined to think that rule 30.1 is not strong enough to require boats to leave starting marks on any particular side and that thus there is no possibility of mark-room at a starting line under rule 30.1.

IMO, this is correct.  30.1 is worded in a significantly different way than 30.2/3/4.  30.1's and 30.2/3/4's structures are as follows:

  • 30.1: If [flag]  .. and [a boat's physical position is such], then [required action/imposed consequence].
  • 30.2/3/4: If [flag], then [applied restriction on boat's physical position].  If [boat breaks restriction], then [consequence].

30.1 doesn't impose any restriction on the boat.  It simply states if a boat finds itself in the condition, it must take the specified action.  IMO, if 30.2/3/4 also used the same structure, I think the entire remaining discussion would be more obviously moot.

For instance (and risking a kerfuffle) , rewriting 30.3 in 30.1's 'no restriction' form (replacing “no ... shall be” with “and any ... is”):

  • If flag U has been displayed, [and any] no part of a boat’s hull, crew or equipment shall be [is] in the triangle formed by the ends of the starting line and the first mark during the last minute before her starting signal. If a boat breaks this rule [,]and [the boat] is identified, she shall be disqualified without a hearing, but not if the race is restarted or resailed.

But, that's not how 30.2/3/4 is written.   

OP-Q3. If you find logically that there there is a required side to the starting marks in the last min when Z/U/Blk is flown, can 18 apply between boats as they approach them .. if they are not approaching them to start?

I've been thinking through this trying to make sure I didn't miss something ... so here is my best whack at explaining how I see why 18 never applies to starting marks when 30.2/3/4 is in effect.

In my last post, I broke apart "required side" and focused on the term "side" and that it means the 'side of the boat' the mark is on when the boat is doing the verb (rounding/passing/leaving) .. and it is not .. 'the side of the mark'.  I ended with this image below, showing 2 boats passing the mark outside the triangle on opposite "sides" .. Blue to starboard and Yellow to port .. showing that there isn't a "side" which is common to all boats.



So for the rest of the argument, I think I'd focus the other-half of "required side"... on "required”.

What "requires" a boat to sail any course in a race?  I think the answer to that is RRS 28.

Let's look at the following drawing under 30.2/3/4 with less than 1 min to start at the pin-end.

The starting gun goes off a position #5.  Prior to the gun, while 30.2/3/4 is in effect, Green leaves the pin to starboard, Red leaves the pin to port and both boats have clean starts.  No rule broken and no penalties.




Arguably, RRS 28 starts applying to Red at #1 but at least at #3-4, but does not apply to Green until position #8 (on prestart-side and approaching line to start).  The important point is that both left the pin-mark on opposite sides of each other because they were not "required" to leave or pass the mark in any way or side until RRS 28 starts to apply.

Let's make it a little more questionable .. again starting gun goes off at #5 under 30.2/3/4



This time we have boats on the course-side of the line, outside of the triangle in the final seconds.  At first blush one might think that because they both have to get to the prestart-side of the line before starting and the boats are overlapped, and 30.2/3/4 says ‘no part of the boat shall be in the triangle’ that Blue might owe Yellow mark-room because as 18.1 states .. 

Rule 18 applies between boats when they are required to leave a mark on the same side and at least one of them is in the zone."

But as you can see, Yellow is not actually required to leave the mark to the same side as Blue.  By slowing her speed and awaiting the starting gun, yellow was able to wait-out the triangle-restriction and "leave" the pin to starboard while Blue left it to port prior to RRS 28 taking effect for both boats (@#6 for Blue and @#8 for yellow). 

In fact, I would argue that Yellow didn’t “leave” the pin mark at all before position #5 while 30.2/3/4 were in effect.  At position #5, Yellow still had time to maneuver and “leave” the pin to either side, but choose to pass it to starboard.

So .. how I see it, even though 30.2/3/4 states that no part of the boat shall be in the triangle, there is neither a "requirement" to leave/pass nor a common "side" on which to leave/pass the starting-marks .... prior to the boats approaching them to start at which time RRS 28 kicks-in. Once they are approaching to start, the preamble to Section C excludes 18 and therefore RRS 18 can not apply at any time to the starting marks under 30.2/3/4.
Created: 19-Dec-29 22:01
Philip Hubbell
Nationality: United States
Certifications:
  • Club Race Officer
  • Judge In Training
0
John Allan's wish to make the triangle an obstruction via the SI 
creates the problem of each boat deciding where the obstruction lies. 
Most obstructions encompassed by the rules are visible and predictable.
Recognizing the line by taking range bearings from each end of the line 
is easy. Not so for the other legs of the triangle.
Avoid "solutions" that create unsolvable post-race arguments, or worse, 
pre-start monitoring requirements of the RC beyond sighting the starting line.
Created: 19-Dec-29 22:40
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
Philip , I don’t need think that’s what John A suggested at all. On the contrary, he was very specific that the triangle could only be an obstruction if there was a specific (weird)  SI to make it so. -Ang
Created: 19-Dec-29 22:43
Philip Hubbell
Nationality: United States
Certifications:
  • Club Race Officer
  • Judge In Training
0
Did I misunderstand?
> "probably should be) designated as obstructions in the Sailing Instructions"
Created: 19-Dec-29 22:47
P
Angelo Guarino
Certifications:
  • Regional Judge
  • Fleet Measurer
0
Philip, he’s not referring to the triangle there. He’s talking about restricted areas defined in the SI’s in general.  
Created: 19-Dec-29 23:01
P
John Allan
Certifications:
  • National Judge
  • Regional Race Officer
0
I certainly wasn't advocating making the triangle an obstruction via the SI.

What I was trying to say was that when the SI specify a 'prohibited area', by whatever name, they probably should also designate that area as an obstruction.

If a 'prohibited area' is not designated as an obstruction, then a right-of-way boat can 'herd' a give way boat into the prohibited area then protest them for breaking the SI.

If the prohibited area is designated as an obstruction, an outside right-of-way boat must give a boat inside room at the area boundary.

Even though the area boundary may be difficult to observe, making it an obstruction still works:  for the outside boat to claim that the inside boat broke the SI, she has to admit that she did not give rule 19 room.
Created: 19-Dec-29 23:01
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