How the sport is organised

The three at a glance

Homologation is the number of a model the maker must have built before the body will let it race, and the three figures differ by an order of magnitude. The classes column links to each body's class list under Class Legality, where the part answers live.

International Jet Sports Boating Association

Rulebook

IJSBA 2025, 25 separate PDFs, rule years 2021-2025.

Sound measured at

22.86 m.

The rule book is 25 separate PDFs published in different years (2021-2025). Class documents are NOT all from the same season, so two classes are only comparable once you have checked the rulebook year printed on each of them.

A national policy, and a model for affiliates

The document states itself to be the policy in the United States and the suggested model for IJSBA Affiliates throughout the world. Affiliates select their own membership policies, and IJSBA may require modifications to those policies as a condition of continued sanctioning. A tier read off this document is the US policy and a model. It is not a guarantee of what any given affiliate runs, and a rider entering an affiliate event has to ask the affiliate.

IJSBA 2025, Competition Membership, read from the rulebook on 2026-09-07. Confidence: confirmed.

Union Internationale Motonautique

Rulebook

UIM 2026, one 189-page PDF, published 22 December 2025.

Governing body

Union Internationale Motonautique (UIM), Monaco.

Promoter

UIM-ABP (Aquabike Promotion).

Sound measured at

24 m.

UIM calls the craft an "Aquabike" (abbreviated A.B.), not a personal watercraft or waterbike. Rule 500.01 defines it as a mono-hull vessel using an inboard engine - thermal or electric, not excluding prototypes or new technologies - powering a water-jet pump as its primary source of propulsion. The two divisions are Ski (standing) and Runabout (seated).

Unlike IJSBA, this is ONE document covering every class, so cross-class comparisons are all same-season. There are no per-class PDFs of differing vintages.

What governs when rules conflict

Rule 407 "Priority of These Rules" does NOT do what its title suggests. It is a single sentence requiring that the course of the UIM be exhausted before a dispute reaches a civil court - an exhaustion-of-remedies clause, not a hierarchy.

200.01 states only that where rules conflict, the rules concerning the SERIES prevail over the general rules. There is NO stated precedence between the UIM rulebook, national federation rules and event supplementary regulations.

UIM 2026, 200.01 and 407, read from the rulebook on 2026-09-08. Confidence: confirmed.

Who interprets the rules

Decided by the National Authority, Race Committee, Race Jury or Appeal Board, guided by the intention and spirit of the rules. Entrants accept that organisers apply the UIM rules "as they may be amended from time to time, and Special Rules that may be published". That is the only amendment mechanism stated.

The rulebook is silent on three things a reader might expect it to state:

• no authoritative-language clause (no statement that English or French prevails)
• no effective or entry-into-force date beyond the 22/12/25 publication footer
• no numbered bulletin or circular procedure

UIM 2026, 200.01, read from the rulebook on 2026-09-08.

International Hot Rod Association, Pro Watercraft Racing

Rulebook

IHRA V.20260603, one 95-page PDF, version V.20260603, sections A to EE.

Governing body

Cuttell Motorsports, LLC d/b/a International Hot Rod Association ("IHRA"), per A.2.

Governing law

State of Ohio, with venue exclusively in Ohio state or federal courts (A.2.4).

Sound measured at

22.86 m.

The document carries a version string, not a season. V.20260603 and the top entry of its own revision log, 06.03.2026, are the same date. 2026 is read off that, and ruleBookVersion above is the figure to cite in any claim. The rulebook changed four times between February and June 2026. A claim against it names V.20260603 or it names nothing, which is why every IHRA legality record here that cites the rulebook carries rulebookVersion as well as rulebookYear.

The published PDF is served from a SAS-signed Azure blob link that expires. ruleBookUrl is the rules page it is reached from, which is also the URL the IHRA legality records here cite. Storing the deep link would produce a dead citation.

Revision log, as printed in the rulebook

IHRA 2026, front matter, revision log, read from the rulebook on 2026-09-11.

---

The rest of the sport: 40 organisations

Three bodies is not the sport. National affiliates, promoters, series and clubs run most of the racing that happens. The directory below lists every organisation this archive's research reached, with the name a register or the body's own document prints, and a grade that answers one question only: does a document establish that a body of this name exists or existed? 28 of the 40 are established that way; the rest are partly established, or listed in their own list at the end because nothing reached could establish them. A contested founding year or an abbreviation nobody expands does not lower the grade; it is said on the row. IJSBA, the UIM and IHRA are treated above and left out of the tables. No person is named anywhere in the directory: a director's name on a registry record is personal data, and the sport's organisations are not.

Using this to find who governs you. Find your country below, then ask the organisation listed for it which of its affiliates or clubs runs racing near you. Whichever body sanctions the event you enter sets the rulebook you are judged against, so that answer is what makes the class legality answers yours rather than somebody else's. This archive holds no calendar of coming races and cannot tell you where the next one is.

1. 1

   Choose the race you want to enter

   The event records here are past editions, not a list of coming dates.

2. 2

   Ask its organiser who sanctions it

   The directory lists affiliates, promoters and clubs country by country.

3. 3

   That body's rulebook is the one you race under: IJSBA, UIM or IHRA

   If two bodies govern you at once, the stricter of their two answers is the one that binds you.

4. 4

   Find your class in that rulebook

5. 5

   Read its legality page

   Each body has its own list, and each page in it answers part by part.

The directory reaches 17 countries so far, and two organisations whose country no document reached states. If yours is not among them, that is a gap in this research and not a sign that nobody runs racing there: the three bodies above sanction events in countries this directory has not got to yet.

Listed, not established (1)

Names this archive has used or met that no document reached could establish. They stay listed so a reader searching for one finds what is known and what is not, and nothing on them is relied on elsewhere.

• International FreeRide WaterCraft Association (IFWA): likely active, dates not established.

Abbreviations that need care

• UIM: The name is French and the UIM never translates it, not even in the English text of its own 2026 Statutes. Three English glosses circulate (International Powerboating Union, International Powerboating Federation and others); none is the body's, and this site prints none.
• IHRA: A bare search for IHRA returns the older drag-racing business line for cars. This is one organisation that added a watercraft discipline, not a namesake: the IHRA mark's ownership update to Cuttell Motorsports, LLC was recorded on 12 February 2025 (TSDR sn86470485, prior registrant IHRA Entertainment, LLC). Search with watercraft, Cuttell or Pro Watercraft Racing Series.
• ECW: Not ECWX. The string ECWX was found nowhere; the organisation and IJSBA both write ECW. ECWX appears to be this archive's own coinage and is not used here.
• GLW: Not GLWX. GLWX was found nowhere; the organisation's own About page writes GLW and the press writes GLWC. GLWX appears to be this archive's own coinage and is not used here.
• AJSBA: One of three bodies that abbreviate to AJSA in circulation: this racing body, the Australian Jet Ski Association (an advocacy body, not a sanctioning one) and an American Jet Sport Association for which no document was reached. A build sheet citing an AJSA 2026 rulebook with X2 classes most likely means this body or the American one. They are not merged.
• AJSA: Shares its abbreviation with the Australian racing body AJSBA as commonly shortened, and with the American Jet Sport Association. This one sanctions no racing.
• JSRA: Two primary sources expand it differently: Jetsport Racing Association on its own site, Jet Sports Racing Association in IJSBA's affiliate directory. Neither is picked. Near-collision: Guam's affiliate is GJSRA.
• CZAVS: The body writes its abbreviation with a hacek on the C and its name with Czech diacritics on its own site; this site writes CZAVS and the name without diacritics, as IJSBA's directory does, so the row is found by the plain letters (convention stated 2026-09-30).
• JJSBA: The one linked source, hwsm.jp, prints JJSBA beside the Japanese name Nihon Jet Ski Kyokai, Japan Jet Ski Association, which leaves the B unexplained; the held Wikipedia and boaters.jp items print Japan Jet Ski Boating Association, which is where the expansion comes from. This archive's own earlier notes used a third variant, Japan Jet Sports Boating Association, that no source prints (checked 2026-10-02; the held rule-book texts and the mirrored books print the words Jet Sports Boating only inside the IJSBA's own name).
• WGP#1: Written WGP#1 with the number. World Grand Prix alone is not the name.
• DJSU: Not DJSA. A DJSA in this archive's earlier notes does not exist: IJSBA's affiliate list has no such body, Denmark is DJSU and Germany is DJSV.
• MJSZ: Printed three ways: MJSZ in its own 2006 foreword and the 2002 IJSBA book, MJSSZ on its own 2006 letterhead and throughout its current site, MJSJ in the IJSBA books of 2010 to 2015.

Every organisation: what the row rests on

United States Jet Ski Boating Association, USJSBA Partly established

Also printed as: U.S. Jet Ski Boat Association (as an Alabama weekly printed it on 21 August 1980).

Founded: 1980 or earlier (derived basis).

After it: IJSBA.

Disciplines: closed course.

Scope: national. Status: defunct.

Listed, not established. The body predates the web, no archived site exists, and the only sources reached are this archive's own derived notes, which give two expansions and two founding years. It needs 1980s print before anything on this row is more than hearsay. Corrected 2026-10-08: 1980s print now exists. An Alabama weekly of 21 August 1980 has the U.S. Jet Ski Boat Association choosing Lake Logan Martin for its 1980 southern national championships on 30 and 31 August, so the body existed and had championships scheduled by summer 1980, under a name printed with Boat, not Boating (the notice was printed before the event, so it does not show the races were held); the founded year now reads 1980 or earlier, the grade is partial because the only print is a newspaper, and the expansion stays unsourced.

Sources: archive.org; An Alabama weekly of 21 August 1980, held as an OCR excerpt, naming the body and its 1980 southern national championships; Two of this archive's own derived history files, which disagree with each other on the expansion and the founding year

Aquabike Promotion, UIM-ABP Established by a document

Stands for: Aquabike Promotion (sourced primary).

Also printed as: UIM-ABP Aquabike World Championship (the championship it promotes, as aquabike.net prints it); UIM Aquabike World Championship promoter (the description this row used as its name until 2026-09-30).

Founded: 1995 (championship sanctioned by the UIM) or 2011 (promoter appointed) (primary basis).

Parent or sanction: UIM.

Disciplines: closed course (circuit), parallel slalom, freestyle, offshore, endurance, jet raid.

Scope: global; the promoter's printed address is H2O Racing (CY) Ltd, Nicosia, Cyprus. Status: active.

Checked 2026-09-30 against aquabike.net/championship, which prints that the championship was sanctioned in 1995 by the Monaco-based UIM and that in 2011 Aquabike Promotion (ABP) was appointed by the UIM as worldwide promoter: the 1992 founding and active years, the country Monaco, the sentence saying no document expands ABP, the predecessor UIM Jet Ski World Championship and the adversarial relationship to IJSBA were in no cited source and were replaced or removed, and the name is now the entity name the pages print rather than a description. The promoter's printed address is H2O Racing (CY) Ltd, Nicosia, Cyprus. A 1996 date in this archive's older notes could not be traced to anything.

Sources: h2oracing.net; aquabike.net; aquabike.net

American Power Boat Association, APBA Established by a document

Stands for: American Power Boat Association (sourced primary).

Founded: 1903 (primary basis).

Parent or sanction: UIM.

Disciplines: Inboard, Junior, Modified Outboard, Offshore, OPC, PRO, Stock Outboard, Unlimited, Jet Sprint, Vintage & Historic, Motosurf.

Scope: United States governing body for powerboat racing, per its own About page; UIM national authority status not stated there. Status: active.

The APBA lists no current personal watercraft category. The Library of Congress catalogues an APBA serial, Rules for personal watercraft racing, from 1989, the only pre-2022 PWC rulebook found in any library. A 1992 advert lists APBA Watercraft National Champions for the 1991 season, the earliest dated APBA watercraft title held, on one advert only. Checked 2026-09-30: apba.org's About and results pages redirect to apba.tracksideapp.com, whose About page prints American Power Boat Association (APBA) and Established in 1903 and whose categories page adds Unlimited, Jet Sprint, Vintage & Historic and Motosurf to the disciplines; the UIM appears there as a logo only, so the national authority wording moved to what is printed. The Library of Congress link was unreadable that day.

Sources: apba.tracksideapp.com; lccn.loc.gov; apba.tracksideapp.com; IJSBA article of 23 July 2005, USWRA Joins Forces with APBA

United States Watercross Racing Association, USWRA Established by a document

Stands for: United States Watercross Racing Association (sourced primary).

After it: APBA, which absorbed it in July or August 2005.

Disciplines: closed course, freestyle, endurance, supercourse.

Scope: national. Status: defunct 2005.

The expansion was sourced from the association's own archived site, which places it in Noblesville, Indiana.

Sources: web.archive.org; web.archive.org; IJSBA article of 23 July 2005

UWP, LLC, UWP Established by a document

Stands for: Upstate Watercraft Promotions (sourced secondary).

Founded: 1995 (own timeline) or 1996 (a networking profile) (contested basis).

Parent or sanction: IJSBA licensee.

Disciplines: watercross.

Scope: national watercross tour operator; a New York LLC. Status: active.

The legal name is simply UWP, LLC: the trademark filings and the state record agree, with empty name-history fields. The IJSBA rule books of 2010, 2011, 2012 and 2014 list Upstate Watercraft Promotions, of Penfield, New York, with the website uwpinc.com, among the organisations the IJSBA supports to promote events in the United States, and the 2010 book's calendar gives the same contact for a UWP-IJSBA Nationals. That the company in those lists is this UWP, LLC, filed in 2012, is a reading from the letters, the state and the website: none of the four books prints the LLC, checked 2026-10-09, and the expansion is graded secondary for that reason. Owner of the Pro Watercross brand. Checked 2026-09-30: hydroflight and SUPXross are not on prowatercross.com and were removed, and the New York LLC qualifier moved from country to scope; the 1998 Northeast world-qualifying, the 2000 National Tour stop and the National Tour management from 2009 had no readable source and are recorded here as unsourced rather than in the relationship field. Corrected 2026-10-09: the row said the expansion circulated only on a networking profile and was sourced to no document; the four IJSBA books print it, so it is now given as theirs.

Sources: prowatercross.com; web.archive.org; Three USPTO trademark filings naming the owner as UWP LLC, New York; New York Department of State corporate record, DOS ID 4237865, filed 30 April 2012, checked 2026-09-22; IJSBA rule books of 2010, 2011, 2012 and 2014, held as text

Pro Watercross, PWX Established by a document

Founded: 1995 (the brand's own About page) or 2014 (a 2019 About capture) (contested basis).

Parent or sanction: UWP, LLC; IJSBA sanctioned.

Disciplines: watercross closed course, freestyle.

Scope: national tour. Status: active.

PWX is shorthand for the brand, not an acronym. No Florida entity named Pro Watercross exists, a genuine negative; an earlier Pro Watercross Tour trademark belonged to a different holder. A derived note says the brand was acquired by East Coast Watercross with a partner; that rests on derived documents only. Checked 2026-09-30: prowatercross.com/about/ prints Since its founding in 1995, Pro Watercross has championed the sport's growth, which contradicts the 2014 brand date read from the 2019 capture, so the founding year is now contested between the two and the About page was added as a source; the predecessor UWP-IJSBA Watercross National Tour was found in no readable source and was removed.

Sources: web.archive.org; prowatercross.com; prowatercross.com; prowatercross.org About page, 2019 Wayback capture; ijsba.com event listings for 2026

East Coast Watercross, ECW Established by a document

Stands for: East Coast Watercross (sourced primary).

Also printed as: East Coast Watercross LLC (its classes page and its home page).

Parent or sanction: IJSBA Region 8.

Disciplines: closed course.

Scope: IJSBA Region 8: Maine, New Hampshire, Delaware, Rhode Island, Vermont, New York, Massachusetts, Connecticut, Virginia, Ohio, Pennsylvania, New Jersey, Maryland. Status: active.

Publishes its own competition classes and tour results on its site. Checked 2026-09-30: the home page prints the thirteen-state list and the name East Coast Watercross LLC, and was added as a source.

Sources: eastcoastwatercross.com; eastcoastwatercross.com; eastcoastwatercross.com

Wild West Watercross, WWWX Established by a document

Stands for: Wild West Watercross (sourced primary).

Also printed as: Wild West Watercross, LLC (IJSBA's announcement of 13 December 2024).

Parent or sanction: IJSBA (joined for the 2025 season).

Disciplines: closed course, freestyle (exhibition), vintage ski classes.

Scope: Northern California, Utah, Nevada and parts of Arizona; IJSBA Western, formerly Region 2. Status: active.

The newest IJSBA regional affiliate reached. Checked 2026-09-30: no reached page prints a founding year (the rules page has none, and IJSBA's announcement says only that WWWX had already been successful in launching community-driven competition before joining), so the 2024 founding became null and the active years start by 2024; vintage freestyle is not a discipline the rules page lists, which has Freestyle as exhibition class 22 and vintage ski classes 10 to 13 separately, so the disciplines now read as printed.

Sources: ijsba.com; wildwestwatercross.com

Great Lakes Watercross, GLW Established by a document

Stands for: Great Lakes Watercross (sourced primary).

Also printed as: GLWC.

Parent or sanction: IJSBA through 2024; IHRA Pro Watercraft regional partner for 2026.

Disciplines: closed course buoy racing, freestyle.

Scope: Wisconsin, Illinois, Indiana, Ohio, Michigan, Kentucky, occasionally Minnesota (its About page); Virginia events on its rules and results pages. Status: active.

The one regional body on this list that has moved between the two American sanctioning bodies, which makes its 2026 rules the place to look for how the IHRA book is applied regionally. Its 2026 rulebook was not retrieved. Checked 2026-09-30: neither cited page prints 2005, the About page says only that the organisers met about 15 years ago, and results run from 2021, so the founding year is null and the active years start at 2021; the endurance-through-P1-AquaX discipline and the independent-in-2025 statement had no linked source and were removed (the trade-press report of 18 December 2024 behind the IJSBA departure is not linked either); Virginia was added to the scope from the rules and results pages. The site's copyright names the operator 2 Wicked Promotions, LLC.

Sources: greatlakeswatercross.com; greatlakeswatercross.com; greatlakeswatercross.com

Australian Jet Sports Boating Association Limited, AJSBA Established by a document

Stands for: Australian Jet Sports Boating Association (sourced primary).

Also printed as: Australasian Jet Sports Boating Associations Inc (2006 site title).

Parent or sanction: IJSBA (sole Australian affiliate).

Disciplines: watercross, Aquabike GP3.

Scope: national racing sanctioning; a federation of state clubs. Status: active.

The legal name and entity type changed between 2006 and now with no source explaining the change. Its rulebook was not located. Checked 2026-09-30: MotoSurf and endurance are not on the news page, which names watercross and Aquabike GP3, and were removed; the Chattanooga seat and 2022 founding once given for the American Jet Sport Association had no source and were removed; IJSBA's directory was added as a source.

Sources: ajsba.org.au; ijsba.com; ajsba.org.au About page; ABN Lookup record 84 081 224 491

Australian Jet Ski Association, AJSA Established by a document

Stands for: Australian Jet Ski Association (sourced primary).

Founded: 2015 (primary basis).

Disciplines: advocacy, safety legislation.

Scope: advocacy and industry body; not a racing sanctioning body. Status: legal entity active; operationally dormant.

Listed so the abbreviation collision is visible. Its Model Rules are referenced in circulation but were not retrieved.

Sources: ABN Lookup record 43 610 015 964

Jetsport Racing Association of Great Britain, JSRA Partly established

Stands for: Jetsport Racing Association of Great Britain on its own site; Jet Sports Racing Association of Great Britain in IJSBA's directory (contested).

Also printed as: Jet Sports Racing Association of Great Britain (IJSBA affiliate directory).

Founded: 1995 (primary basis).

Parent or sanction: IJSBA affiliate. Before it: Personal Watercraft Association (PWA) UK.

Scope: national. Status: active.

The body is real and publishes its own rule book; the grade is partial because its own name is printed two ways by two primary sources. Checked 2026-09-30: its About page prints Founded in 1995 and that the JSRA emerged from the restructuring of funds that led to the disbandment of the Personal Watercraft Association (PWA), so the founding year moved from derived to primary; the same page prints Jetsport Racing Association of Great Britain and an affiliation with IJSBA, which it renders as the International Jetsport Boating Association, while IJSBA's directory prints Jet Sports Racing Association of Great Britain. The rule-book page was unreadable that day, so the disciplines runabout racing and ski racing, which it alone supported, are empty until it is read.

Sources: jsra.co.uk; jsra.co.uk; ijsba.com

Ceska Zavodni Asociace Vodnich Skutru, CZAVS Established by a document

Stands for: Ceska Zavodni Asociace Vodnich Skutru (sourced primary).

Also printed as: Jet Ski Racing Association of Czech Republic (IJSBA's rendering).

Parent or sanction: IJSBA affiliate.

Disciplines: Ski GP, Ski Limited, Ski Stock, Ski Ladies, Ski Gentlemen, Runabout GP, Runabout Stock, Freestyle, Novice, Junior.

Scope: national. Status: site answers over http on 2026-09-30 with content last dated 2015; https certificate mismatched.

Time-critical: on 2026-09-17 one pass found czavs.cz answering 404 from a bare hosting panel with a mismatched certificate, and another the same day got the 2012 rulebook in full. The mirrored rulebooks are the reason this row matters, and they should be pulled from the Wayback Machine while they can be. Checked 2026-09-30: over https the site presents a mismatched certificate; over http it answers with the association's name, an IJSBA recognition line, a 2015 licence notice and champions for 2006 to 2014, so the status now says that.

Sources: ijsba.com; czavs.cz; czavs.cz page metadata, 2020 capture

Japan Jet Sports Association, JJSA Established by a document

Stands for: Japan Jet Sports Association (sourced primary).

Also printed as: Nihon Jet Sports Kyokai (ippan shadan hojin).

Founded: 2020 (primary basis).

Before it: None formal; the Japanese press calls it a new organisation.

Scope: national. Status: active.

One of three Japanese bodies on this list with near-identical initials; this is the current one, founded in 2020 as the older two wound down. Checked 2026-09-30: jjsa.or.jp/outline/ prints the Japanese name and a founding date of 14 January 2020, and jjsa.pro prints the English name and JJSA; the rules page answered 403 and jjsa.pro renders only by script, so the disciplines once listed (circuit racing, vintage, endurance, freestyle) are empty until a rules page is read, and the sentence naming the JPBA as the UIM authority, which no source printed, was removed. Checked 2026-10-02: no held text names the JPBA or any Japanese UIM authority, so the removal stands.

Sources: jjsa.or.jp; jjsa.or.jp; jjsa.pro

Japan Jet Ski Association, JJSBA Partly established

Stands for: Japan Jet Ski Boating Association (sourced secondary).

Also printed as: Japan Jet Ski Boating Association (the held Japanese Wikipedia and boaters.jp items).

Founded: 1984 (secondary basis).

After it: None formal.

Disciplines: Kawasaki one-make closed course.

Scope: national. Status: dissolved at the end of 2020.

No primary site of the organisation survives; three secondary sources describe it and disagree on one word of the name. Corrected 2026-09-30: the name now follows the one linked source, hwsm.jp, which prints Japan Jet Ski Association without Boating along with 1984, the Kawasaki one-make origin and a 37-year history ending after the 2020 season; the Boating form rests on the held Wikipedia and boaters.jp items and moved to alsoKnownAs.

Sources: hwsm.jp; Japanese Wikipedia article; boaters.jp listing

Japan Jet Sports Federation, JJSF Partly established

Stands for: Japan Jet Sports Federation (sourced secondary).

Founded: 1992 (secondary basis).

Parent or sanction: Claimed IJSBA and UIM affiliation; listed as IJSBA's Japan affiliate.

Disciplines: cross-manufacturer displacement classes.

Scope: national. Status: ended racing activity in 2021.

Three secondary sources converge and no primary text of the federation was reached. This is the body this archive's derived notes call dissolved after 2022; the sources say 2021. Checked 2026-09-30: IJSBA's directory dated 11 June 2024 still prints JJSF (Japan Jet Sports Federation) as its Japan entry, three years after the sources say racing ended.

Sources: ijsba.com; Japanese Wikipedia article; ssf.or.jp listing

Personal Watercraft Industry Association, PWIA Established by a document

Stands for: Personal Watercraft Industry Association (sourced primary).

Founded: 1987 (primary basis).

Parent or sanction: National Marine Manufacturers Association (affiliate).

Disciplines: lobbying, regulatory advocacy, safety education.

Scope: manufacturers' trade and lobbying body; not a sanctioning body. Status: current status unverified.

The National Park Service rule of 2000 states that the PWIA coined the term personal watercraft. The association filed into Coast Guard and EPA dockets from 2000 to 2021, which is where the sound and off-throttle-steering history will cite it. Checked 2026-09-30: the regulations.gov link answers 403 and the govinfo page for the Federal Register issue of 21 March 2000 rendered no content to a fetch, so no readable public link could be added; the Federal Register citations stay as held sources.

Sources: regulations.gov; Federal Register 65 FR 15077 (2000) and 63 FR 49312 (1998); PWIA v. Department of Commerce, 48 F.3d 540 (D.C. Cir. 1995)

National Marine Manufacturers Association, NMMA Established by a document

Stands for: National Marine Manufacturers Association (sourced primary).

Disciplines: trade association.

Scope: marine industry trade association; not a sanctioning body. Status: active.

Included only as the PWIA's parent; nothing else about it is recorded here. Checked 2026-09-30: nmma.org/about returns a server error, so the link now points at the overview page, which prints the full name.

Sources: nmma.org; Seventy-five Federal Register documents use the full name

WGP#1 Waterjet World Grand Prix, WGP#1 Established by a document

Stands for: Waterjet World Grand Prix (sourced primary).

Founded: 1996 (primary basis).

Parent or sanction: Partnership with IJSBA and IJSBA Europe. Before it: King's Cup World Cup Grand Prix.

Disciplines: closed course world series.

Scope: international world series; IJSBA global media partner. Status: active.

The expansion was sourced from the series' own About page, which also prints that the first game took place in 1996, so on 2026-09-30 the founding year moved from derived to primary. The Pattaya base this row once stated is on neither cited page and is unsourced.

Sources: ijsba.com; wgp1.com

P1 AquaX, P1 Established by a document

Also printed as: P1 Aqua X (with a space, as the IJSBA rulebook spells it).

Founded: 2013 (US first use of the mark, USPTO 4681520) (derived basis).

Parent or sanction: Powerboat P1 Management Limited (UK) and Powerboat P1 (USA) LLC (Florida, filed 13 August 2013).

Scope: national and regional endurance series; UK company, US series from 2013. Status: active.

The company account of the series is confirmed by government filings in two countries; an account in this archive's earlier notes that named an individual founder is refuted by every source, which give that person a different role. The letters P1 are expanded in no filing or trademark record. Checked 2026-09-30: the 2011 founding and the May 2011 UK start were in no linked or held source and were replaced by the one dated fact held, the February 2013 US first use on the trademark record, read as derived; the disciplines Enduro and Sport and the 2026 activity were unsourced and were removed; p1aquax.com now redirects to powerboatp1.com, whose AquaX page prints the 2025 calendar and winners and whose home page prints Founded in 2003, Powerboat P1 and that Powerboat P1 has confirmed the sale of its U.S. offshore racing operations, P1 Offshore USA, to the International Hot Rod Association (IHRA).

Sources: find-and-update.company-information.service.gov.uk; powerboatp1.com; Florida Sunbiz record M13000005143; USPTO registration 4681520, AQUA CROSS X, first use February 2013; IJSBA Competition Membership, held as text (the deferral to P1 Aqua X Rules)

Hydrodrags Partly established

Parent or sanction: Ambiguous: IJSBA lists it as a sanctioned category, an entertainment company runs a branded event, and the IHRA rulebook names Hydrodrags staff and timing units.

Disciplines: straight-line drag racing.

Scope: PWC drag racing, as a discipline and as a branded event series; the flagship event runs at Boca Raton, Florida. Status: active.

May be a discipline name used by two distinct operators rather than one body. Not treated as a sanctioning body here. Checked 2026-09-30: the Boca Raton qualifier moved from country to scope, and the event company's home page, which prints the 2025 Fueltech Hydrodrags US Nationals World Championships at Burt Aaronson South County Regional Park, Boca Raton, was added as a source.

Sources: ijsba.com; quadlifeentertainment.com; quadlifeentertainment.com; IHRA rulebook, held as text, section DD

World Cup WaterCross Tour Partly established

Stands for: World Cup WaterCross Tour (derived).

Founded: 1991 (derived basis).

Parent or sanction: IJSBA sanctioned.

Disciplines: watercross.

Scope: regional to national tour, based in Florida. Status: defunct 1998.

The likely operator is a Florida company filed on 8 March 1991, an inference from name and date alone: the filing states no business purpose, and no document read names the tour (checked 2026-10-02 against the held IJSBA, UIM and IHRA texts and the mirrored 2002 to 2018 IJSBA books, none of which prints it). On 2026-09-30 the Florida qualifier moved from country to scope; nothing else changed.

Sources: A trade-press history article; Florida Sunbiz document S36469, checked 2026-09-22

IJSBA National Tour Partly established

Stands for: IJSBA National Tour (sourced primary).

Also printed as: Bud Jet Sports Tour (1996 sponsor name).

Parent or sanction: IJSBA.

Disciplines: closed course.

Scope: national points championship. Status: unknown.

The tour's own dates were not established; one 1996 round's results survive in a magazine's web archive. Corrected 2026-09-30: this archive's derived history notes were removed from the held sources, as the file header says they are not evidence, and the sentence saying UWP, LLC managed the tour from 2009 had no document behind it and was removed.

Sources: web.archive.org

Brazilian Jet Sports Association, BJSA Established by a document

Stands for: Brazilian Jet Sports Association (sourced primary).

Also printed as: Associacao Brasileira de Jet Ski.

Founded: 1996 or earlier (derived basis).

Parent or sanction: IJSBA.

Disciplines: closed course, slalom, freestyle, Pro Freestyle.

Scope: national; the official IJSBA representative in Brazil. Status: live domain answers 404; the site is recoverable from about 4,400 Wayback captures.

The 2004 rulebook carries an in-era model homologation listing, which is the kind of document the homologation history will need. Checked 2026-09-30: IJSBA's directory dated 11 June 2024 prints BJSA (Brazilian Jet Sports Association) under Brazil, and was added as a source.

Sources: web.archive.org; ijsba.com; BJSA rulebooks of 2004 and 2009, read in full

Eesti Jeti ja Mootorkelgu Liit, EJML Partly established

Stands for: Estonian Jet and Snowmobile Federation (sourced primary).

Also printed as: Eesti Jetispordi ja Mootorsaanide Liit (the form this archive first recorded); Estonian Jetski and Snowmobile Federation (IJSBA's directory, 2014 and still in June 2024); Estonian Jet Ski and Snowmobile Association (Baltic season-total footers, 2013 and 2016).

Parent or sanction: IJSBA homologation required for all entries. After it: The jet commission of Eesti Veemoto Liit (EVL), from the 2017 season.

Disciplines: track racing, endurance from 2015.

Scope: national. Status: domain gone; content moved to the EVL's sites.

Corrected 2026-09-22: the name is as the register and the rulebook mastheads print it, Eesti Jeti ja Mootorkelgu Liit, throughout its registered life from 1996 to 2020. The form this archive first recorded was never the registered name. The richest Nordic and Baltic yield of the research: an Estonian translation of IJSBA 2001 sections 6 and 19 survives as HTML. Partial because the founding date is not established and the English name is printed three ways. Checked 2026-09-30: both Wayback links were unreadable that day, and IJSBA's live directory dated 11 June 2024 still prints EJML Estonian Jetski and Snowmobile Federation under Estonia, so it was added as a source.

Sources: web.archive.org; web.archive.org; ijsba.com; EJML rulebooks of 2012 and 2015, read in full; About sixty results, supplementary-regulation and start-number PDFs of 2011 to 2019, mirrored; Estonia's e-Business Register, registry code 80040976, checked 2026-09-22

Hjellestad Jet Ski Klubb, HJSK Established by a document

Stands for: Hjellestad Jet Ski Klubb (sourced primary).

Parent or sanction: Norwegian NMF (UIM-based national rules).

Scope: club. Status: listed by IJSBA in June 2024; not checked live.

A club, not a federation, listed because it held the oldest full IJSBA rulebook the research located. Checked 2026-09-30: the 2001 start and the active-at-jetski.no status had no source and were reduced to what is held and listed; IJSBA's directory dated 11 June 2024 prints Hjellestad Jet Ski Klubb (spelled Klubk there) at a Hjellestad address as its Norway entry, and was added as a source.

Sources: ijsba.com; The 2002 IJSBA rulebook, read in full from the club's server

Suomen Jet Sport Liitto ry, SJSL Partly established

Stands for: Suomen Jet Sport Liitto (sourced primary).

Also printed as: Suomen JetSport Liitto (its own current site); Finnish JetSport Association (IJSBA's directory, June 2024); Suomen Jet Sport Yhdistys ry (registered name 1997 to 2009); Suomen Jetski Liitto (the form this archive first recorded).

Disciplines: ski, runabout, endurance cup.

Scope: national. Status: active.

Corrected 2026-09-22: the register gives the legal name as Suomen Jet Sport Liitto ry, previously Suomen Jet Sport Yhdistys ry; the form this archive first recorded, Suomen Jetski Liitto, matches neither the register nor the federation's site. Partial because the founding date is not established and the name has three printed forms. Checked 2026-09-30: the rules page lists Ski GP1 and GP3, Runabout GP2, GP3 and GP4, an Endurance Cup and junior classes, so the disciplines were filled from it; IJSBA's directory dated 11 June 2024 prints Suomen JetSport Liitto / Finnish JetSport Association under Finland, and was added as a source.

Sources: sjsl.fi; ijsba.com; Finland's PRH/YTJ register, business ID 1059271-6, checked 2026-09-22; Two 2013 Watercross Tour documents, mirrored

Lietuvos vandens motociklu sporto federacija, LVMSF Established by a document

Stands for: Lithuania Jet Sports Federation (sourced primary).

Also printed as: Lithuania Jet Sports Federation (its own 2015 advance programmes).

Parent or sanction: IJSBA affiliate per IJSBA's directory; UIM alignment per its 2015 programmes.

Disciplines: aquacross, enduro, slalom, aquabike.

Scope: national. Status: active.

Organiser of the 2015 East European Jetski Cup at Elektrenai and the 2015 Lithuanian and Baltic final at Kaunas. A separate Lithuanian Jetsport Association appears in a 2013 footer; its relationship to this body is not established. Its relationship to the Lithuanian powerboat federation LMF is not stated by either. Checked 2026-09-30: lvmsf.lt prints, in Lithuanian, that the federation took its first steps in the sport more than twenty years ago, which contradicts the 2015 start once given here, and names Aquacross, Enduro, Slalomas and Aquabike, which filled the disciplines; the later-UIM-aligned reading was not on the site, which names neither body, while IJSBA's directory dated 11 June 2024 lists LVMSF under Lithuania, so the parent and relationship fields now say that.

Sources: lvmsf.lt; ijsba.com; Two 2015 advance programmes (the East European Jetski Cup and the Lithuanian and Baltic final), mirrored

Dansk Jetsport Union, DJSU Partly established

Stands for: Dansk Jetsport Union (derived).

Also printed as: Danish Jet Sport Union (IJSBA's directory, June 2024).

Scope: national. Status: domain dead; still listed by IJSBA in June 2024.

Known from Wayback captures of its domain, which hold no documents at all. Checked 2026-09-30: the Wayback wildcard listing was replaced as a link by IJSBA's directory dated 11 June 2024, which prints Danish Jet Sport Union (DJSU) at a Skoedstrup address under Denmark, and the captures moved to held sources.

Sources: ijsba.com; Wayback captures of djsu.dk, 1999 to about 2016

Federation Internationale du Surf Motorise, FIDSM Established by a document

Stands for: International Federation of Motorized Surfboards, per its own 2014 rulebook (contested).

After it: UIM MotoSurf.

Disciplines: motosurf.

Scope: jet surf. Status: superseded.

The only PWC crossover among the jet-surf bodies; the English expansion in its own rulebook does not match its French initials, which is why the expansion is contested.

Sources: FIDSM 2014 rulebook, held as text

Magyar Jet-Ski Szovetseg, MJSZ Established by a document

Stands for: Hungarian Jet-Ski Federation (sourced primary).

Also printed as: MJSSZ (its own 2006 letterhead and its current site); MJSJ (IJSBA books 2010 to 2015 and the June 2024 directory).

Founded: 1992 (primary basis).

Parent or sanction: IJSBA and UIM member, per its own 2006 book. Before it: The jet ski section of the Hungarian powerboat and water-ski federation (MMVSZ), 1991 to 1992.

Disciplines: closed course, slalom, freestyle, Formula 1 2 3, STAR slalom, UIM rally jet.

Scope: national. Status: live at jet-ski.hu with documents dated 2017 to 2025.

Founded 12 November 1992 per the federation's own 2006 foreword. The claim that it co-founded the IJSBA European committee is single-sourced to that foreword. Hungary's court register was not reached. Checked 2026-09-30: both Wayback links were unreadable that day, and IJSBA's live directory dated 11 June 2024 prints MJSJ (Magyar Jet Ski Szovetseg) under Hungary, so it was added as a source.

Sources: web.archive.org; web.archive.org; ijsba.com; MJSZ 2006 book, parts I to IV, mirrored and read; IJSBA affiliate directories of 2002 and 2010 to 2015, mirrored

Eesti Veemoto Liit, EVL Established by a document

Stands for: Estonian Powerboating Union (sourced primary).

Also printed as: Estonian Powerboating Union (EPU), its own English form.

Founded: 1956 (primary basis).

Parent or sanction: UIM, sole Estonian representative per its statutes.

Disciplines: circuit powerboats, offshore, aquabike closed course, aquabike enduro.

Scope: national, UIM-side powerboating union that also sanctions aquabike. Status: active; veemoto.ee live 2026-09-20.

Its statutes name it the successor of the Estonian SSR powerboating body founded in 1956; the present union's own registration date is not stated. Its jet commission took over EJML's site between October 2016 and July 2017.

Sources: web.archive.org; web.archive.org; EVL statutes, captured 2023-09-29; The 2019 Tallinn Open, 2018 Nordic Championship and 2016 Baltic programmes, mirrored; veemoto.ee history page, read live 2026-09-20

Latvijas Udensmotociklu Sporta Asociacija Established by a document

Founded: 2006 (primary basis).

Disciplines: aquabike closed course.

Scope: national. Status: unknown; not checked live.

The words are Latvian for water motorcycle sport association; no English form or abbreviation is printed anywhere. Cleared 2026-09-22: the register confirms an active association of this name since 2006, and a 2020 capture of udensmocis.lv names it as that site's administrator, which reverses the earlier note that no file tied the domain to it.

Sources: Latvia's Register of Enterprises, registration 50008102411, checked 2026-09-22; Baltic season-total sheets of 2013 and 2016, mirrored (page footers); A 2020 Wayback capture of udensmocis.lv's About page

Lietuvos motorlaiviu sporto federacija, LMF Partly established

Stands for: Lithuanian Powerboat Federation (sourced secondary).

Also printed as: Lietuvos Motorlaiviu Federacija.

Founded: 1958 (secondary basis).

Parent or sanction: UIM. Before it: Respublikine motorlaiviu sporto federacija, 1955.

Disciplines: circuit powerboats, water-motorcycle races in an LMF cup by 2008.

Scope: national, UIM member. Status: active per the F2 world championship site, 2026.

Added to explain the regulations line on a 2013 Baltic guide. Its relationship to LVMSF, the jet federation on the 2015 programmes, is stated by neither body's site; LVMSF describes itself as founded independently. Lithuania's register was not reached.

Sources: vle.lt; A 2026 interview on the F2 world championship site; The 2013 Baltic round 1 guide, mirrored (regulations line reads LMF; UIM)

IJSBA Europe, EJSBA Established by a document

Stands for: European Jet Sports Boating Association (sourced primary).

Also printed as: European Jet Sports Boating Association; the Eurotour (2013); Euro Jettribe Jetski Championship (2015 to 2017); vzw Euro (legal form, a Belgian nonprofit).

Founded: 1993 (secondary basis).

Parent or sanction: IJSBA. Before it: The Belgian Jetski Federation, which ran the European Championship before vzw Euro was formed, per the 2013 About page.

Disciplines: closed course, endurance, freestyle.

Scope: European; IJSBA's continental championship organiser. Status: active; ijsba.eu captured to 2026.

The 1993 founding and the EJSBA expansion rest on the Hungarian forewords and one IJSBA headline. The legal entity vzw Euro was found in neither Belgian registry searched, which is recorded as an absence, not a contradiction: the Gazette's 1993 full-text coverage looks too thin to settle it. Checked 2026-09-30: both Wayback links were unreadable that day, and IJSBA's live directory dated 11 June 2024 prints IJSBA Europe with an address at Lede, Belgium, so it was added as a source.

Sources: web.archive.org; web.archive.org; ijsba.com; Wayback captures of ijsba.eu from 2011 to 2026 and of ijsba.com news from 2013 to 2015, mirrored; The Hungarian federation's 2005 and 2006 forewords, mirrored; Belgian registry (KBO) and Official Gazette searches, 2026-09-20 and 2026-09-22

Belgian Jetsport Boating Federation, BJBF Established by a document

Stands for: Belgian Jetsport Boating Federation (sourced primary).

Also printed as: B.J.B.F. (as the register abbreviates it).

Founded: 2009 (primary basis).

Parent or sanction: IJSBA affiliate (listed under Belgium in IJSBA's June 2024 directory; Belgium also heads ijsba.eu's 2013 list of affiliated countries and IJSBA's 2010 to 2015 directories list a Belgian member). Before it: Belgian Jet Ski Boating Association (B.J.S.B.A.), a nonprofit started 27 February 1987 and struck off ex officio on 29 January 2024; the registry does not link the two.

Scope: national. Status: active on the register, 2026-09-20.

Two registered Belgian bodies exist, the 1987 association and this 2009 federation, and no document says which is the Belgian Jetski Federation of ijsba.eu's page or whether either is vzw Euro (checked 2026-10-02; the mirrored 2002 and 2006 IJSBA books list the Belgian affiliate as the Belgian Jet Sports Boating Association, BJSBA, and the 2010, 2011, 2012 and 2014 books as the Belgian Jetsport Boating Federation, BJBF, neither with a registry number, so the books date a change of name without settling which registered body either is). Director names on the register are personal data and are not recorded. Checked 2026-09-30: IJSBA's directory dated 11 June 2024 prints Belgian Jetsport Boating Federation(BJBF) under Belgium, so the presumed affiliation is now a listed one and the directory was added as a source.

Sources: ijsba.com; Belgian registry (KBO) entity records 0810.432.030 and 0434.154.380; ijsba.eu About page of 2013, mirrored

International FreeRide WaterCraft Association, IFWA Not established

Stands for: International FreeRide WaterCraft Association (sourced secondary).

Disciplines: freeride, freestyle.

Scope: global freeride and freestyle. Status: likely active.

Listed, not established. The expansion comes from a business-directory listing; the Facebook page title is IFWA Freeride World Championship Tour and does not expand the letters (corrected 2026-09-30). Founding date, country and legal status are unverified, and ifwa.com is an unrelated parked domain.

Sources: facebook.com; A Dun and Bradstreet listing title

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Documents cited on this page

Source: IJSBA Competition Rule Book, the set of per-class and general documents, published by International Jet Sports Boating Association

Published by

IJSBA Competition Rule Book, the set of per-class and general documents, published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

Twenty-five separate PDFs on one page, published in different years (2021 to 2025). The set is cited as the 2025 rule book; a class document carries its own year, which is printed on that class's page. This row is the set; the two rows below are the general documents held as text.

Source: IJSBA General Race Regulations (section 6 of the rule book set), published by International Jet Sports Boating Association

Published by

IJSBA General Race Regulations (section 6 of the rule book set), published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

The GEN.1 to GEN.15 document: pre-start, starts, restarts, buoys and the finish, slalom, competition rules, addenda, flags, pits, registration. Held here as text. The document prints no year of its own; the edition is the rule book set it was downloaded with.

Source: IJSBA Competition Membership (MEM.1 to MEM.11), published by International Jet Sports Boating Association

Published by

IJSBA Competition Membership (MEM.1 to MEM.11), published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

Rider classifications, the minimum age, the junior classes and the advancement caps. The document states itself to be the United States policy and a suggested model for affiliates, which every page citing it repeats.

Source: IJSBA Homologation (HOM.1 to HOM.5), 2023 document linked from the rule book page, published by International Jet Sports Boating Association

Published by

IJSBA Homologation (HOM.1 to HOM.5), 2023 document linked from the rule book page, published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

The current homologation rules, four pages, HOM.1 to HOM.5 (divisions, the 500-unit count and the low-volume route, manuals, the production model on request), file created 2023-08-31 and linked from the 2025 rule book page. Held as text from 2026-10-02 by the edition watch; until then the body record carried the only reading of it, which the homologation history chapter cites.

Source: IJSBA Aftermarket Hull Homologation, Hull and Sponson Guide, 2023 document linked from the rule book page, published by International Jet Sports Boating Association

Published by

IJSBA Aftermarket Hull Homologation, Hull and Sponson Guide, 2023 document linked from the rule book page, published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

Two pages announcing a homologation process for aftermarket hulls, registration of builders and designs, an ID tag per hull in a database, and sponson scrutiny, which IJSBA expected to complete for the 2024 competition season; file created 2023-08-29. Held as text from 2026-10-02; nothing read says whether the process was completed.

Source: IJSBA Scoring, Discipline, Protests and Appeals (SCOR), 2025 document, published by International Jet Sports Boating Association

Published by

IJSBA Scoring, Discipline, Protests and Appeals (SCOR), 2025 document, published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

The current scoring document, 13 pages, titled Scoring, Discipline, Protests, Appeals and numbered SCOR.1 to SCOR.23, linked from the rule book page under "Scoring" (file created 2025-02-11; prints no year of its own). Fetched and held on 2026-10-02 by the edition watch, which found it beside the 2018 text the archive had extracted two days earlier; the 2018 rows point at these. Same twenty section headings in the same order as 2018, with the old numbering defects carried over (SCOR.2.2 inside SCOR.1, SCOR.3.1 twice).

Source: IJSBA Rule Book Part 6, General Information (2016 edition), published by International Jet Sports Boating Association

Published by

IJSBA Rule Book Part 6, General Information (2016 edition), published by International Jet Sports Boating Association web.archive.org

Attempted on

2026-09-26

Worth knowing

A Wayback Machine capture of the 2016 rule book's Part 6, fifteen pages, indexed in our own list of IJSBA pages captured by the Wayback Machine (held here, not published). Read only so the race-weekend page can say what changed between 2016 and 2025; it governs nothing now and is evidence for no current rule.

Source: IJSBA Rule Book Part 7, Scoring and Authority (2016 edition), published by International Jet Sports Boating Association

Published by

IJSBA Rule Book Part 7, Scoring and Authority (2016 edition), published by International Jet Sports Boating Association web.archive.org

Attempted on

2026-09-26

Worth knowing

A Wayback Machine capture of the 2016 rule book's Part 7, twelve pages, indexed in our own list of IJSBA pages captured by the Wayback Machine (held here, not published). Listed so the scoring page can compare the 2016 scoring rules with the current ones; on 2026-09-26 the capture could not be read by our fetch tool, so no row cites it yet.

Source: IJSBA Scoring, Authority, Discipline, Protests and Appeals (2018 edition), published by International Jet Sports Boating Association

Published by

IJSBA Scoring, Authority, Discipline, Protests and Appeals (2018 edition), published by International Jet Sports Boating Association ijsba.com

Read on

2026-10-02

Worth knowing

The August 2018 text of the Scoring, Authority, Discipline, Protests and Appeals document, held as extracted text since 2026-09-30 from the 2021-path PDF the rule book page still links under "Authority, Discipline, Protest Appeals" (file created 2018-08-21, no year printed). The rulebook check of 2 October 2026 found the page also links a 2025 scoring document with SCOR numbering, so this one is the earlier edition: its rows (ijsba-2018-*) point at the 2025 rows, it governs nothing now and is evidence for no current rule.

Source: 2026 UIM Aquabike Rulebook, published by Union Internationale Motonautique

Published by

2026 UIM Aquabike Rulebook, published by Union Internationale Motonautique uim.sport

Read on

2026-10-01

Worth knowing

One 189-page document covering every class, so cross-class comparisons are same-season. Read straight from the PDF; the text is not held here and page numbers were not recorded, so a reference from this document cannot yet be followed to a page. Held here as extracted text from 2026-10-01, the same text the rule rows were read from on 2026-09-26.

Source: UIM Aquabike Rulebook, edition April 2016 (printing version), published by Union Internationale Motonautique

Published by

UIM Aquabike Rulebook, edition April 2016 (printing version), published by Union Internationale Motonautique uim.sport

Read on

2026-10-01

Worth knowing

The April 2016 edition of the UIM Aquabike book, 97 pages, held as extracted text from 2026-10-01 after sitting in our research cache since 2026-09-21. Read only so the race-weekend and scoring pages can say what changed between 2016 and 2026, the comparison the archive plan asked for and could not build on the IJSBA side; it governs nothing now and is evidence for no current rule. Its numbering differs from 2026 (blocking is 308.01 here and 307.01 there), which the earlier-edition rows record row by row.

Source: IHRA Pro Watercraft Racing Competition Rulebook, version V.20260603, published by International Hot Rod Association (Cuttell Motorsports, LLC)

Published by

IHRA Pro Watercraft Racing Competition Rulebook, version V.20260603, published by International Hot Rod Association (Cuttell Motorsports, LLC) ihra.com

Read on

2026-09-07

Worth knowing

Sections A to EE, 95 pages. The URL is the rules page rather than the PDF, because the PDF is served from a signed link that expires. The version string is the figure to cite; the rulebook changed four times between February and June 2026.