Forum: Race Committee & Race Management

Time limit in Handicap Racing

Martin Fraser
In PHRF (or ORC), what is a rational time limit for a race (e.g., DSQ if >30 min after the 1st place boat)? 
Consider a scenario where a boat with a relatively large handicap finished 35 minutes behind the first finisher, but would place very near in corrected time. 
Do you use time limits and how do you account for such an outcome? Is there any pertinent published guidance?
Created: 26-Jan-19 20:47

Comments

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Beau Vrolyk
Forum Moderator
50
Tips
I don't know of an official guidance, but what has worked well for me is to do a bit of research on the fleet's traditional spread between 1st and last place. That has often turned out to be someplace between 5 and 10 percent of the finishing time of the first boat. I then set the time limit generously based on that information. 

One can't set a single number as races can last from 30min to 3hours or more, even for the leader.
Created: 26-Jan-19 21:04
Greg Dargavel
I believe the appropriate scoring is DNF rather than DSQ. We use 45 minutes with a PHRF rating spread of 80ish points. This is inland lake evening racing, with most frequently diminishing breeze over the course of the race.
Created: 26-Jan-19 21:13
Bob Scott
At Grapevine Sailing Club we have a big range of PHRF boats, fleeted as best we can but with still big ratings spreads.  Here is the part of our SIs dealing with the issue:

Time Limits
a. The first warning signal of the day must occur no later than 1.5 hours after the scheduled first
2026 Frostbite Series warning or all races for that day shall be abandoned (no more racing this day).
b. A race (for a fleet) shall be abandoned when no boat in that fleet completes the leg to the first
mark within 1 hour. A race (for a fleet) shall be abandoned when the first boat in that fleet fails to
finish within 3 hours after the start signal for that fleet.
c. Any boat in a race, failing to finish within 45 min after the first boat in her fleet has finished, shall be scored DNF without a hearing. This changes RRS 35, A5.1 and A5.2.
Created: 26-Jan-19 21:13
George Bishop
Nationality: Canada
At our club, we vary the times depending on the distance of the race, roughly 5, 12, and 20 miles. Here is the breakdown found in our SI's.
  TIME LIMITS
 12.1 Standard Race: Boats failing to finish within 40 minutes after the first boat in their division has finished will be scored Did Not Finish. This changes rules 35 and A4. If no boat has finished within 150 minutes the race will be abandoned.
 12.2 Race involving Entrance Island or its Navigational Marks: Boats failing to finish within 75 minutes after the first boat in their division has finished will be scored Did Not Finish. This changes rules 35 and A4. If no boat has finished within 300 minutes the race will be abandoned.
 12.3 Race involving Maude Island/Halibut Bank: Boats failing to finish within 105 minutes after the first boat in their division has finished will be scored Did Not Finish. This changes rules 35 and A4. If no boat has finished within 420 minutes the race will be abandoned.
 12.4 If the first boat to finish sails the course in less than 30 minutes the race will not be counted.   
Created: 26-Jan-19 21:49
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Angelo Guarino
Forum Moderator
Nationality: United States
OK .. let's put some meat on these bones ..

Let's say the SI's state the TL is 30min after the first finisher.  Let's examine 3 boats in a large fleet.  It's a 20nm race.

Lightning has a PHRF rating of 60
Speedy has a PHRF rating of 120
Droopy has a PHRF rating of 180

Lightning crosses first.
Speedy +25min
Droopy +39min

Lightning is awarded 1st and Speedy is awarded 2nd place, but Droopy would have corrected over both Lightning and Speedy had she not been TLE'd from the SI's.

Question: Given the large PHRF-spread in the fleet and the length of the course, can it be an improper action by the RC to set too tight of a TL?
Created: 26-Jan-19 21:53
Stephen Broadbent
Because competitors accept the rules including the SIs (R4) I don't think the action can be improper. It is something competitors are well able to recognize may occur with the rules they are sailing under.
Further Question:
What if the RC abandons the race under R32.1 (d) as being unfair to Droopy? Is that an improper action effecting Lightning and Speedy?

edited note re Angelo reply to Jim.
I agree with Angelo's comment, there is unfairness on entering an event and not knowing the rules.
The time limit referred to in the sailing instructions is a reference to the time the first boat must finish by  under R35. If the first boat does finish in time, all other boats must be given a finish time. This Time limit may be just in the SIs and not the NOR. However an additional time limit imposing a limit on subsequent boats is a change to rule 35 and therefore must be published in the NOR.
If it is in the NOR, it is fairer to Droopy but I acknowledge Angelo's point that Droopy may not know who else is entering.
Created: 26-Jan-19 23:54
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Angelo Guarino
Forum Moderator
Nationality: United States
Stephen re: "Because competitors accept the rules including the SIs (R4) I don't think the action can be improper."

That's a pretty broad and definitive conclusion.  We might want to dig in on that a bit. 

I've had many R4R's that were based upon errors written into the race docs. RRS 63.5(c) seemingly directly contemplates such errors in the form of "conflicts". 

In another realm, we've seen NOR's and SI's published which themselves were against the rules as written. 

Not sure just because something is in the race docs, a boat accepts them to the point that they waive their right to claim that they are in error. 
Created: Tue 00:27
Stephen Broadbent
If we assume that the NOR and SIs are correctly written and do not conflict with the RRS etc the question becomes:
Can the NOR (or SIs) change racing rules in such a way that makes racing unfair? I hope the answers no but I suspect its not.
Does improper mean slightly more than "Unfair"? like "dishonest" "wrong" "not good manners"?
Back to your question, any slower boat is inherently disadvantaged (unfairly) in a handicap race  with a time limit additional to R35 because it has a higher probability of getting DNF than faster boats. So, I agree its unfair, i'm not sure its improper (if the NOR and SIs comply with RRS)
Created: Tue 01:18
Bill Heintz
I grew up sailing on the Chesapeake Bay in the 70's.  Either the RC shortened the course, abandoned the race before anyone finished, or waited for the last boat to finish.  I suspect now the people on the RC have other priorities.
Created: 26-Jan-19 21:54
Mike Fering
Nationality: United States
Some discussion here about this issue, but consensus has been to use "TLE," or time limit expired, if a boat finishes X minutes after the first boat finishes and score the boat 1 point more than the number of boats that finished within the time limit. When this kicks in, a competitor is a) relieved that they don't need to keep racing in the last gasp of air, or b) exasperated because they'd spent all that time racing with little reward.

As PRO, my goal has been to see that this never happens because I've shortened course or abandoned the race first!
Created: 26-Jan-19 21:56
Graham Smith
This is where the skill and knowledge of the person writing the SI's comes in - assisted by the RC on the water.  A few of my random thoughts.
1. Setting a time limit that requires the slowest boat to have a corrected time way faster than the corrected time of the fastest boat to avoid TLE is inherently unfair. The SIs need to take into account the difference in speed of the fastest (first finisher?) and slowest boats in a fleet and set the time limit to allow the slowest boat to at least place before TLE.
2. The RC needs to monitor the progress of the fleet and be prepared to either shorten course or abandon if it looks like the race is running too long to allow the slowest boats with a chance of placing to avoid TLE.
3. Being a dinghy club, we run multiple races in a day and try to avoid races taking too long by setting time limits then shortening course when necessary. We also often use T/T corrected lap times instead of corrected race times to allow both the cats (circa PY 650) and the slowest monohulls (circa PY1500) to have decent length races without having to wait for the slow boats to do the same number of laps as the fast cats.  That works for "round the cans" races, but obviously more of a challenge for the big boys distance races.
4. Detailed planning ahead saves a lot of anguish and frustration!
5.  If all else fails  -  use a pursuit race format.... :o) 
Created: 26-Jan-19 22:45
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Beau Vrolyk
Forum Moderator
"5.  If all else fails  -  use a pursuit race format.... :o) "

Massive thread drift, but the same problem exists in a pursuit race. for example: If you're sailing in an area with a consistently building wind speed, then the fast boat sail in conditions that are more favorable to them. (EG: San Francisco Bay) 

If you sail in an area where there is a consistently declining wind speed during the race, then the little boats get an advantage, and the big boats end up slatting.  (EG: Long Island sound, at least in my experience.) 

I have tried dividing the handicap advantage in half, applying 50% of the correction to the start. This gets the starting window smaller and puts the boats closer together. Competitors seem to find this more fun. Then I apply the other 50% of the correction to the finish, which seems to cut the problem above in half. 

Given unpredictability in windspeed, current on SF Bay, and sailing skill, this has resulted in some spectacularly close finishes. Big hit with the sailors.
Created: Tue 00:59
Doc Sullivan
Nationality: United States
I typically use time to the first mark (20 minutes for around the bouts. Then total time limit or a finish window ( how long after the first boat finishes. The exact time should be how long a typical race is in your lighter conditions and the finish window depends on the differences of the PHRF ratings. I like TLE and in a series which   one more than the number of finishers. DNS is one more than the boats in the series.  Gives recognition to those that came to the starting line even if they did not finish.
Created: 26-Jan-19 23:12
Jim Champ
Nationality: United Kingdom
ISTR we've had this discussion.

To my mind its clearly unfair to TLE a boat that could have corrected above any finisher, but I think the consensus was that provided the time limit is clearly posted in NOR then it doesn't reach the bar of being an improper action. 

My own opinion is that if an RC must use time limits in handicap races then the rest of their race management as regards shortening course etc etc needs to be very good indeed, or/and the time limit very generous.
Created: 26-Jan-19 23:36
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Angelo Guarino
Forum Moderator
Nationality: United States
Reply to: 20329 - Jim Champ
Jim C re: "that provided the time limit is clearly posted in NOR then it doesn't reach the bar of being an improper action. "

Of course, a boat entering has no idea how low the fastest boat's handicap will be, as Lightning could have entered after Droopy.

Also, according the Appx J2.1(6), the TL's are in the SI's, which might not be avail until after most boats have entered. 
Created: 26-Jan-19 23:47
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Peter van Muyden
Nationality: Canada
100
Tips
My first answer is:

However, most club racing likely uses some form of elapsed-time correction. One fair method is to apply time corrections to all boats after the first boat has finished. 

Here is my attempt to explain it. In the case of the 30 minutes limit:
  • add 30 minutes to the elapsed time of the first boat to finish and convert its corrected time by multiplying by its TCF (Time Correction Factor)
  • for all boats divide the corrected time of the winner, which includes the 30 minute time limit, by by the individual boat's TCF.   This will give you the time limits for those boats.   

You might find that boats with a very low (fast) ratings could be already beyond the time limit set by the winning boat.   







Created: Tue 02:11
Gordon Davies
Nationality: Ireland
I would agree with Peter's system. The French used a similar system, but at the time smartphones/tablet not available.
It should be simple to write an app that can be set up by the scorer based on entry list to make the calculations.

However, I would argue that standard handicap racing does not work well if there is a big spread in size/speed in the fleet. I would like to see experimentation with average lap racing in cruiser handicap racing.
Created: Tue 11:51
Kirsteen Donaldson
My view on the use of time limits at all has been stated in a previous thread - in summary, I would only use it if there was a plan to run another race that day or if the organising authority is providing safety boat cover. Reply to " Because competitors accept the rules including the SIs (R4) I don't think the action can be improper. It is something competitors are well able to recognize may occur with the rules they are sailing under."  But competitors can choose whether or not to persevere to finish in a slow race, and competitors with a bad experience can choose not to enter ever again.  Some years ago, I raced with a club that had a time limit based on corrected time difference from the first boat to finish - not even the race committee on the water knew when that was.  The first boat crossed the line, then the wind shut down; when it filled in some time later, the remainder of the fleet crossed the line close together.  The committee was on station and took all times; we would have come 3rd.  I (and indeed the race committee, after someone ashore had done the arithmetic) only discovered that evening that we, along with most of the fleet, were TLE.  Locally we have plenty of options for racing.  Suffice it to say, I never raced with that club again, and that club no longer offers racing.  
Created: Tue 12:39
Gordon Davies
Nationality: Ireland
I would argue that time limits and time to finish after the first boat has finished are essential race management tools.

In almost all racing situations there needs to some pre-determined end to racing, if only so that competitors, race officials and their families and friends can organise themselves. More cynically, it is in a club's interest to have some idea when sailors will be back on shore clamouring for beer and food!

One point: time limit based on corrected time difference from the first boat to finish - not even the race committee on the water knew when that was.

I am certain that within rrs.org there is someone who can produce an app that can carry out this calculation that will run on a smartphone or tablet. 
Created: Tue 12:54
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Angelo Guarino
Forum Moderator
Nationality: United States
Gordon and Peter V .. just so I understand what you are suggesting, it's ?...

ActualSlowestBoatTL = TargetTL * (maxHC - minHC) * HCmeasure

HCmeasure -> either time or distance depending upon the HC system. 

TargetTL -> the reasonable TL in the context of an OD fleet. 

ActualSlowestBoatTL - > when the RC can pickup and go home. 
Created: Tue 13:04
Jim Champ
Nationality: United Kingdom
I take a contrary view. If I have to score a competitor TLE then in almost all circumstances I've failed the competitor. I'll qualify that to note that I've never run long distance point to point races. But I'm out there to provide a service to every competitor, not just the front of the fleet. After all its the back half of the fleet that growth usually comes from, and if I score Fred Newboy TLE 5 weeks running is he going to come back for week six?

So as RC I submit we have to think seriously about every possible way to avoid scoring TLE. Most of it is about the basics. Have I set a short enough course that everyone can finish before the dusk lull? Have I judged the weather? Is the lap length right so I can shorten readily if needed? Should we have average lap scoring? Or Grand Prix finishes where everyone finishes next time through no matter how many laps they've done? Should we allow stragglers to self report their finish time ? Or have a safety boat go out and finish the tail of the fleet in order on the course? Its going to be different for every situation, every club, every race type, but I maintain if someone has put the effort in to race its our duty to do everything we can to ensure their effort isn't wasted.

Created: Tue 13:38
Kirsteen Donaldson
"... if only so that competitors, race officials and their families and friends can organise themselves" - that is/should be back to being the competitor's choice, not imposed by the race committee.  In the fuller version, I specifically said that I had no expectation that the race officials stayed out, but if a boat chooses to stay out to get a series result; or in offshore events to count qualifying miles for another event or for a sense of achievement; why not?  

" More cynically, it is in a club's interest to have some idea when sailors will be back on shore clamouring for beer and food! " - I'm sure you're right on that for clubs running only local races with their own club house, but is that fair to the boats that would have had a valid series result without an arbitrary time limit?  I favour relying on the race committee's judgement in setting the course and, if necessary, shortening appropriately and in accordance with the RRS.  If it gets it slightly wrong and leaves one or two boats that choose to stay out a bit later than intended, that's not bad for business; better than leaving boats without a valid result through no fault of their own.  (Again, I specifically excluded races where safety boat cover etc is provided; I'm talking about self-sufficient keel boats, which in any case are often not berthed near any cllubhouse.)  

" I am certain that within rrs.org there is someone who can produce an app that can carry out this calculation " - I'm sure there is (though the committe in question didn't have it), but it would also need each individual boat's time limit to be communicated with the boat, or you're left with boats continuing to race beyond their individual time limit, which runs counter to your other arguments.  
Created: Tue 13:44
Doc Sullivan
Nationality: United States
There are calculation tools and now Apps that allow you to calculate how long the beat should be for a variety of one design classes, PHRF handicaps. You should then figure how long to set the beat to accommodate the slowest boats.  Sometimes if the delta is really great or spin and GO boats on the same course you may even use 2 windward marks or have the faster boats go twice around. TLE is only for when the wind dies and you do not want to leave unhappy sailors drifting around until they run out of beer or you go have an after sailing activity to go to.  Our job as PRO is to serve our customers, after all it is their game.
Created: Tue 18:40
Philip Hubbell
Makes a good case for "chase" format.
Created: Tue 19:17
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Peter van Muyden
Nationality: Canada
Angelo,  I believe that you have the right calculation.

I've attached a simple spreadsheet that would run on a smart phone.   At the start you need the boats, their ratings, start time, finish window entered.  After the first boat finishes you enter her finish time and rating of the boat.   At the bottom is the time to pick to the toys and go home.   

This was for a Time on Time PHRF, but a similar method can be used for other TCF handicap systems.

Finish window calculation.xlsx 11.5 KB
Created: Tue 22:24
Eric Robbins
At my Club we have solved this issue two ways.  Most of our distance random-leg races finish in front of the Clubhouse, between two pilings lined up with our "Finish Hut" on shore.

For our weeknight series where we run five starts for eight Divisions in the 1830-1900 timeframe, we state that a boat in a starting class that finishes by 2100 makes the race valid for that starting class, and that boats finishing after 2100 shall take their own finish time and report it to the RC.  If no boat in a starting class finishes by 2100 then the race is abandoned for that class.  This allows our RC volunteers to know when their job is completed, without penalizing slow boats.

Similarly for our regatta distance races, typically 20-25 nm, we state that there is no time limit, but the RC will stay on station (ashore) for five hours from the starting time.  Boats finishing later may take their own times and report it to the RC.   We implemented this about three years ago and have had no issues.
Created: Wed 14:57
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