This article needs additional citations for verification .(May 2020) |
Performance Handicap Racing Fleet (PHRF) is a handicapping system used for yacht racing in North America. It allows dissimilar classes of sailboats to be raced against each other. The aim is to cancel out the inherent advantages and disadvantages of each class of boats, so that results reflect crew skill rather than equipment superiority.
PHRF is used mainly for larger sailboats (i.e., 7 meters and above). For dinghy racing, the Portsmouth yardstick handicapping system is more likely to be used.
The handicap number assigned to a class of yachts is based on the yacht's speed relative to a theoretical yacht with a rating of 0. A yacht's handicap, or rating, is the number of seconds per mile traveled that the yacht in question should be behind the theoretical yacht. Most boats have a positive PHRF rating, but some very fast boats have a negative PHRF rating. If Boat A has a PHRF rating of 15 and Boat B has a rating of 30 and they compete on a 1 mile course, Boat A should finish approximately 15 seconds in front of Boat B. Results are adjusted for handicap by the race committee after all competitors have finished.
A variant of PHRF racing is called a pursuit race, commonly referred to as a reverse handicap, where boats start in reverse PHRF order with the starting times staggered based on the PHRF ratings. In theory, all boats will arrive at the finish line at the same time, which can make for an exciting finish. This means that the boats cross the finish line in order of placement in the race.
PHRF handicaps are assigned by individuals or committees associated with specific fleets. Handicaps are assigned to a given production class considering predominant local conditions and the handicapper’s experience in handicapping similar boats. These ratings are based on observed performance and any requisite adjustments generally become evident after 5-10 races have been sailed. Scoring options include Time-on-Distance or Time-on-Time. [1]
While handicaps are assigned locally, US Sailing provides certain standards and guidelines to maintain a degree of consistency between fleets. Additionally, as a member benefit, US Sailing develops the PHRF Fleet Handicap Book– a compilation of yacht base handicaps by class from more than 60 PHRF Fleets throughout North America listing over 5000 classes. The Offshore Office also offers administrative and handicapping services to participating PHRF Fleets. The term “Performance Handicap Racing Fleet (PHRF)” is protected by copyright for use by US Sailing and sanctioned regional fleets. [2]
Each region has its own variation on PHRF rules and ratings, based on local conditions. Here is an example of the Northern California PHRF Base Rating Report SAMPLE, the base rating is listed by boat in alphabetical order. The following is a sample of the Northern California rules for determining PHRF SAMPLE.
If a class of yachts is strongly outperforming their assigned rating, the PHRF committee of a region can adjust the handicap as they see appropriate. Hence PHRF is an observational rule as opposed to the IMS pure measurement rule. This prevents classes of yacht within a region from obtaining mistakenly favorable PHRF ratings and compromising the competitive nature of a fleet. All regions have slightly differing procedures for making changes but all have the same objective - keeping the racing fair for all.
The process of determining the PHRF for an individual boat begins with the regional PHRF rating, then adjustments are made for the individual attributes of the boat such as: modifications to the rig, the size of the largest foresail (jib or genoa), the size of the spinnakers, type of keel (full, fin, wing etc.), the number of blades on the propeller, and the style of the propeller (fixed, folding, feathering). Significant modifications to the mainsail can cause penalties.
No rating rule is perfect and all have flaws. Alleged flaws to the PHRF rating system include:
An assumption that a rated boat is in Bristol racing condition - with a clean bottom, new sails, and an experienced crew. This assumption excludes those with less financial resources and sailing experience from the winners circle and discourages many boats from racing. PHRF shares this flaw with all sail racing rating systems, as those utilizing mathematical computation models also assume shapes are perfect, as designed - not worn, dirty, blown out, sagging, or deliberately altered.
PHRF is often viewed as political since the empirically based calculations are adjusted by historical performance, and rating values can be challenged to a committee of judges. The perception of it being political is based largely upon the requirement to follow a formal dispute process, which many find intimidating and creates a bias to those willing to put in the effort to present their case.
Design characteristics of boats yield different performance characteristics in various seas and winds. PHRF does not address these differences, which can especially have an impact in races run over a distance, without variety in points of sail and occur within a time period where weather and sea conditions do not change. Some would claim that this means it is possible to predict which boats will do well in certain conditions, most especially where design characteristics are extremely different. An example would be a light displacement, planing hull versus a heavy displacement non-planing hull. To mitigate this, as with other rating systems, PHRF suggests that race organizers assign boats with similar design in their fleet divisions. This reduces the planing boat vs heavy displacement variable. Typically fleets are split into similar handicap number ranges, which exposes the wind condition/design problem. Where actual fleet performance history does not exist, fleets with similar design characteristics must be utilized and PHRF can skew to favor larger boats with longer waterlines until true historical performance is established.
PHRF is owned by the United States Sailing Association, the national governing body for the sport of sailing, whereas other offshore rating systems are owned by small conglomerates of high powered sailing clubs.
Actual historical performance is verifiable, fully disclosed, and comprehensible to most competitors. Sail racers can validate the measure through seasons of competition, where other boats of same or similar construction are available to measure and compare. Furthermore, when an individual boat or fleet demonstrates performance beyond that of their rating, the performance history changes, as does the rating.
Rating systems which utilize a "proprietary" algorithm are often maligned by competitors who see hiding the science as a means to unfairly skew ratings to individuals with the power to influence the algorithm. While the PHRF dispute process was argued to favor only those willing to pursue it; there is a regional and a national appeal mechanism to question the validity of a rating.
Yacht racing is a sailing sport involving sailing yachts and larger sailboats, as distinguished from dinghy racing, which involves open boats. It is composed of multiple yachts, in direct competition, racing around a course marked by buoys or other fixed navigational devices or racing longer distances across open water from point-to-point. It can involve a series of races with buoy racing or multiple legs when point-to-point racing.
Dinghy racing is a competitive sport using dinghies, which are small boats which may be rowboats, have an outboard motor, or be sailing dinghies. Dinghy racing has affected aspects of the modern sailing dinghy, including hull design, sail materials and sailplan, and techniques such as planing and trapezing.
The Albacore is a 4.57 m (15 ft) two-person planing dinghy with fractional sloop rig, for competitive racing and lake and near-inshore day sailing. Hulls are made of either wood or fiberglass. The basic shape was developed in 1954 from an Uffa Fox design, the Swordfish. Recent boats retain the same classic dimensions, and use modern materials and modern control systems.
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.
The Ross 930 is a class of fast cruiser-racer yachts named after its designer, New Zealander Murray Ross. The design is marked by light weight and moderate sail area, with a sail-area-to-displacement (SA/D) ratio of about 24, and displacement-to-length (D/L) ratio of 98. The bow section is quite narrow, providing relatively low wave-making resistance and reducing pounding while sailing upwind in waves, and the stern section is wide and flat, making the boat easy to control sailing fast downwind. The interior of the Ross 930 is comfortable, including fitted berths for five, a two-burner stove, galley with sink, and a head. The standard engine is an outboard in a well, but a few boats were built with small inboard diesel engines.
One-design racing is a racing method which may be adopted in sports using complex equipment, whereby all vehicles have identical or very similar designs or models, avoiding the need for a handicap system.
The International Offshore Rule (IOR) was a measurement rule for racing sailboats. The IOR evolved from the Cruising Club of America (CCA) rule for racer/cruisers and the Royal Ocean Racing Club (RORC) rule.
The International rule, also known as the Metre rule, was created for the measuring and rating of yachts to allow different designs of yacht to race together under a handicap system. Prior to the ratification of the International rule in 1907, countries raced yachts under their own national rules and international competition was always subject to various forms of subjective handicapping.
The Nepean Sailing Club (NSC) is a sailing club located on Lac Deschênes in Ottawa, Ontario, Canada. The club is based in Dick Bell Park, along Carling Avenue, adjacent to Andrew Haydon Park in the former city of Nepean.
Farr Yacht Design, founded by Bruce Farr in Auckland, New Zealand, is a racing yacht design firm based in Annapolis, Maryland, United States. The firm is led by Patrick Shaughnessy. Its yachts measure from 25 feet (7.6 m) to 125 feet (38 m). Farr develops custom and production yachts, including interiors, sails, and hull design. Farr uses outside research and development with tank testing and wind tunnels. Farr-designed yachts have won and placed well in a broad range of races.
This article attempts to give an overview of the design and manufacturing of sailboats and the evolution of this industry. Details should be found and contributed through linked articles.
The Olson 30 is a sailboat designed by George Olson of Santa Cruz, CA around 1978. Olson was a surfer and surfboard shaper who decided to design a 30' ultra light displacement boat while on a delivery from Honolulu to Santa Cruz on Merlin, a 68' Bill Lee designed and built ultralight sailboat which had competed in the biennial Transpac race in 1977. During this delivery, Olson came up with the idea while sailing with Denis Bassano and Don Snyder, who lent their initials to the prototype's name, SOB 30. The resulting boat was christened Pacific High, and it was launched in 1978.
A sailing yacht, is a leisure craft that uses sails as its primary means of propulsion. A yacht may be a sail or power vessel used for pleasure, cruising, or racing. There is no standard definition, so the term applies here to sailing vessels that have a cabin with amenities that accommodate overnight use. To be termed a "yacht", as opposed to a "boat", such a vessel is likely to be at least 33 feet (10 m) in length and have been judged to have good aesthetic qualities. Sailboats that do not accommodate overnight use or are smaller than 30 feet (9.1 m) are not universally called yachts. Sailing yachts in excess of 130 feet (40 m) are generally considered to be superyachts.
The term sportsboat first appeared in the late 1980s and early 1990s to describe trailer sailers that were optimised for high performance at the expense of accommodation and ballast. The very definition of the term "sportsboat" is evolving.
The Seaway 25 was designed by Doug Peterson of USA fame for Tom Stevenson in 1978 after Tom won the World half Ton championship in one of Doug's designs. The yacht was designed to sail well on the short sharp chop of Port Phillip Bay Melbourne Australia. Intended to rate as a quarter ton Trailer yacht under IOR and Junior Offshore Group racing both for Harbour and Inshore Yacht racing.
A velocity prediction program (VPP) is a computer program which solves for the performance of a sailing yacht in various wind conditions by balancing hull and sail forces. VPPs are used by yacht designers, boat builders, model testers, sailors, sailmakers, also America's Cup teams, to predict the performance of a sailboat before it has been built or prior to major modifications.
The sport of sailing involves a variety of competitive sailing formats that are sanctioned through various sailing federations and yacht clubs. Racing disciplines include matches within a fleet of sailing craft, between a pair thereof or among teams. Additionally, there are specialized competitions that include setting speed records. Racing formats include both closed courses and point-to-point contests; they may be in sheltered waters, coast-wise or on the open ocean. Most competitions are held within defined classes or ratings that either entail one type of sailing craft to ensure a contest primarily of skill or rating the sailing craft to create classifications or handicaps.
Handicap forms for sailing vessels in sailing races have varied throughout history, and they also vary by country, and by sailing organisation. Sailing handicap standards exist internationally, nationally, and within individual sailing clubs.
The C&C 37/40 is a Canadian 12.05 metres (39.5 ft) LOA fibreglass monohull sailing yacht, designed in 1988 by Robert W. Ball of Cuthbertson & Cassian as a replacement for the earlier C&C 37 dating from 1981. The C&C 37/40 is a recreational keelboat of moderate displacement, intended as a cruiser/racer or oceangoing racer. The yachts have a masthead sloop rig, with a fin keel and an internally-mounted spade-type rudder. Over 110 of the 37/40 type were built before the Canadian plant closed in 1994. The design is no longer produced.
The Newport 28-2 is an American sailboat that was designed by C&C Design as a cruiser-racer and first built in 1982.