How to calculate phrf rating Once you have chosen your classes, you will need to choose which PHRF Regions you would like to use for comparisons purposes and related data. To determine the TOT factor (TF), we plug the PHRF handicap into the following formula: TOT Factor (TF) = 566. I used some older races to calculate the 612, where we had bigger fleets If I did it right the TCF = 612 / (550+PHRF) after Calculating the small fleet and entering the TCH for each boat the scores look much better. 8 * R + 379. Adjustments (R) that are normally applied to a specific boat must be included in order to compare ratings. The higher rating indicates the slower boat. In PHRF, boats are assigned ratings in seconds per mile. It The following is a TOT conversion formula that is commonly used to convert the standard PHRF TOD handicap into a TOT Time Correction Factor (TCF). What is CE category for boats? Question. PHRF rating the boat would have needed to tie for first place; Observed BCR2 for the past six months i. This means no one boat or class is guaranteed a win or loss based upon ratings alone. They will not change your rating after a season unless 1) You have extensively modified your boat necessitating them to break out their yardsticks again, or 2) You have a highly political The Trend line is then used to gauge how far off the PHRF rating is to the trend. SCARLET FEVER (57380) – JNNU 380 SO /121/114/114. Rating - Rating of a player. 2 (Revised March 2014) WHAT QUESTIONS ARE BEING ANSWERED? What Instructions Have we included! NOTE: ALL NEW SAILS REQUIRE THAT A SAILMAKER’S CERTIFICATE ACCOMPANY THE PHRF-LO CERTIFICATE APPLICATION FORM! When do we need to report these? How will these changes affect PHRF-NW Standard Dimensions and Sail Measurements F. An annual PHRF-NW handicap rating applies and is valid for the boat described in a rating certificate that is owned or chartered by the member. ” This highlights three very important concepts with regard to the boat rating process. These numbers are notoriously inaccurate on a typical PHRF application. The goal of the Classic Rating Formula (CRF) is to provide an objective, accurate and transparent rating system that is uniquely suited to scoring classic yacht races. 6. Spring Training 2025 - March 22 Cobourg Yacht Club. Your rating is the number of seconds per mile your boat is supposedly slower than a theoretical boat which rates 0. In fact it is absolutely necessary that regions act independently or the ratings would never change and therefore never improve. I’ve long suspected there are a lot of sailors out there who would love to give racing a try, but don’t for two reasons: 1) they’re worried about trading gelcoat with someone during the controlled chaos that is a conventional starting sequence, and 2) they’re turned off by having to correct their finish time after the racing is done. How about a conversion calculator so I can take a PHRF rating and get a usable number for the RYA NHC scoring. This often creates a confusing situation where multiple authorities (that may even serve the same area) sometimes vary wildly in ratings for what are, essentially, the same boat (For example, PHRF Lake Erie, PHRF South Shore, PHRF Detroit, and at least one other The difficulty with PHRF is that there is no single PHRF rating authority (there are at least 40 in the US). That's why you'll find that ratings for new boats can often be wildly different across the country. the Racing Rules of Sailing (RRS) provide two methods for adding the scores together to determine an overall winner. Portsmouth Numbers are updated with data from race results, normally Under PHRF (they rate 48) they would have corrected to 8:45:45. We use cookies to ensure that we give you the best experience on our website. Main Girth Top (MGT): the length of the girth of the mainsail taken at the 7/8 point of the A PHRF rating is published as a handicap number, estimate. 10) 0. Complete the Application Form in full and return it with payment as outlined on the form to BC Sailing at the address stated on the form. Time­ on­ Time scoring is not new. The handicap is applied to the time taken to sail any course, and the handicaps can be used with widely differing types of sailboats. Do they both race at 54? What does - ratings are objective, based purely on measurements and VPP science, and there are no appeals for ratings (unlike PHRF and ORR-EZ). 02. Although Time-on-Time scoring is not new, Lake Ontario was, to the best of our knowledge, the first to implement it through PHRF handicapping. 54kts. PHRF rating the boat would have needed to tie for second place; Each boat's club rating was re-calculated twice per year, but you could also use a sliding window. is calculated using the trapezoidal rule for approximating the area of the sail, applying that rule to each of the vertical portions of the sail using this formula: OK, so I used a J35-72, My Zap26-135, J24-168 and averaged an STD of 612 for A and 550 (average conditions) for B. A PHRF rating is published as a handicap number, given in seconds or minutes per nautical mile of rhumb line racecourse distance. I only mentioned the race rating rule measurements since referring to sails using percentages derives from the rating rules. ” The report is large and may take several minutes to load. its handicap. PHRF Lake Ontario Handicap Sailboat racing. 3620 Miramar Dr. PHRF Delta is the difference between your rating and a competitors PHRF is your PHRF rating. IRC I RC rates measured data such as a boat’s weight, length, draft, rig and sail area, as well as special features like water ballast, canting keels and bowsprits, to allow a wide range of keel boats to compete against each other on a similar playing field. These numbers are pulled directly from ACTIVE ORR-Ez certificates. Opposition Closes Friday April 4 6pm. A boat’s rating is expressed in seconds per mile, representing the number of seconds that will be deducted from its elapsed time per mile sailed. Furthermore (and perhaps even more interesting) was that the variation in corrected elapsed timse relative to PHRF rating was much, much higher when scoring with 5. By comparison, the Melges is 22 feet on the waterline, displaces only 1,750 pounds, carries 620 pounds of ballast in a bulb keel, and flies 380 square feet of At the inception of PHRF-Lake Ontario, Time-on-Time scoring was proposed and included in the PHRF-LO Charter. 23 4. Get a Sail Number from SCYA and Put it On Your Racing Sails. These formulae simplify handicapping as only certain principle dimensions are required to calculate the appropriate rating and corresponding D-PN. Petersburg has long showcased a strong PHRF fleet, The CFD would be incorporated in the rating calculator and run for each boat from the lines files and measurements. Information and Registration. PHRF committees will use the formula pretty religiously when calculating the base rating to production boats. 2. The PHRF number I've seen thrown around for the boat, anecdotally, is from 216 to 222. The “A Factor,” which does not impact TOD. Bottom line, a good crew on a well prepared boat can probably sail 20-50 sec/mile faster than the PHRF rating and other boats and crews will be 20-50 sec/mile slower than the rating. In general, PHRF-LO tends to keep within the national rating extremes but if a particular rating does not seem correct, PHRF Lake Ontario is free to rate a boat completely independently. 52 3. While the goal of PHRF is clear, implementation of that goal can be difficult for a number of reasons: It is very difficult to assess the skill level at which a boat is being sailed. If you haven’t modified your boat at all, then your boat is called a stock boat , and there are BC Sailing is a member of Sport BC and is affiliated with Sail Canada and World Sailing. Actual PHRF rating; Observed BCR for the past six months i. You will need several of your boat measurements to run the Early IOR Conversion: PHRF = - 9. 411 for a scratch boat of 177. Attached is the . 95 x GPH)-520 ”. Or send me the rating and I will generate it for you, it's not exact as "Q"factors vary, but it will help. There are measurements involved, but these are only for compliance with the rules, i. e. All jibs/genoa, 155 and below, get the same rating. If you know one (or more) The two numbers on a PHRF rating certificate that are most critical to a boat’s performance are displacement and waterline length. Prepared for PHRF-LO 2012 January. I like that ORRez is doing better at fairly rating heavier cruising class boats, but the tricks they are doing with the windmatrix to get good numbers is allowing the faster boats enter to game the system and distort the process. RIG AND SAIL AREA TERMS AND DEFINITIONS: “I” Rig foretriangle height measured along the foreside of the mast from the main deck datum to the top of the jib halyard sheave. TOT works by converting a boat’s TOD handicap to a TOT factor, and then multiplying the elapsed time in seconds by the TOT factor to get the corrected time in seconds. Spinnaker Rating Systems Our present method of spinnaker area calculation and rating of spinnakers with The Portsmouth Yardstick (PY) or Portsmouth handicap scheme is a term used for a number of related systems of empirical handicapping used primarily in small sailboat racing. Tributary Carriage Length (example) Figure 3 After the track line loads are calculated from the Track Loading Chart, the floor slab can be reviewed for strength and deflection. But ORR has many different ratings based on the course and wind strength. This can change boat to boat, it is based on the ratio of main+jib area with a standard jib vs main+jib area with the actual jib. I’ve compared a Valiant 40 to an Island Packet 40 using Tom Dove’s Sail Calculator and it appears to me that the IP 40 beats the Valiant in almost all categories. 45 6. Elapsed time can be in Seconds, Minutes, or Hours. For boats with PHRF ratings, we use the "Downwind" PHRF rating and calculate a time correction factor using the formula TCF = 480/(PHRF-35). How does handicap work in sailing? This Rating Rule is intended to calculate a rating for yachts, which can then be used to calculate its Time Correction Factor (T. PHRF Lake Ontario specifies the numbers to be used. blw file. 996 2:28 1:14 0:49 0:24 Black Magic 1. To apply the rating, we take the boat's elapsed time, multiply it by its time correction factor, and compare the results with the lowest "corrected" time winning. The duties of the PHRF Rating Committee are to set ratings for base boat classes, review ratings, enact and interpret rules that apply to boat ratings and rating adjustments (the Rating Rules), rate individual boats and issue and publish PHRF certificates. 54 Lone Ranger 201 (0. No system handicaps the two boats fairly. Here’s a list of SCYA-affiliated yacht clubs. Corrected times for PHRF classes will be calculated using the Time on Time method as defined by PHRF Northwest. Firstly, the PHRF range for the design and, secondly, performance information from the racing a boat has done. Only boats with current PHRF ratings may enter PHRF races. The PHRF Rating Committee is composed of members and handicappers. This often creates a confusing situation where multiple authorities (that may even serve the same area) sometimes vary wildly in ratings for what are, essentially, the same boat (For example, PHRF Lake Erie, PHRF South Shore, PHRF Detroit, and at least one other Time on Distance. Features of each system -PHRF • Local control • Inexpensive certificates • Rates any boat • Simple ratings in ToDor maybe ToT • Ratings adjust with observed performance and appeals • Inconsistent ratings across fleets • New or unusual designs have no data • Often single number rating for all races • Volunteer staff support Several steps may be taken to determine a fair rating after a PHRF application is submitted. nearly a 3hr difference. W - Score. Adjustments are arrived at through either calculation or estimation. Boats. 03. xqnz bvcjsm epgootx mnnto yyoy ugk dlsvdvsjo kbmw mitxzg ccnjsx jnfnd tdcxke kgmhnh vllm dnks