Homologation Practices
Contents
1. txt lt bob corson gmail com gt Tournament Scores Upload to HOMOLOGATOR htm pdf txt or csb http www iwsftournament com homologatio PANAM OR CALCULATOR n UploadScorebooks htm email to Bob Corson lt bob corson gmail com gt Tournament scores plus jump times email to Bob Corson PANAM CALCULATOR wst wsk pdf htm txt lt bob corson gmail com gt Ranking list data iwwf Bob Corson HOMOLOGATOR Trick Video 23 Fox Hollow Rd PANAM bity of End Course Slalom Voorhees responsibility of Eng Course Jump New Jersey 08043 Organiser USA CHIEF JUDGE THE SKIER S NATIONAL FEDERATION ALL FOR RECORD SUBMISSIONS SEND THE COMPLETED FORM PLUS ALL SCORING FILES SET UP FILES JUMP LOGS If relevant HOMOLOGATION FILES AND VIDEO FILES TO CHAIRMAN OF THE IWWF TOURNAMENT COUNCIL CHAIRMAN OF THE REGIONAL TOURNAMENT COUNCIL CABLE SKI Many good practices carry over from boat and are therefore not repeated The following are cable ski specific and are extracted from the Revised Cable Homologation Guideline written by Robin Nichols 2007 Centre line buoys only required for world record capability events rule 15 2 l 9 10 11 Survey all buoys and the jump for the slalom jump and trick courses and adjust as necessary to meet the published tolerances Homologators must take care to measure the lower cable on the wheels at the exact point the cable is tangential to the pulley axis Measure2. available online In my opinion the best check list is the one you write yourself The approach of this document is chronological References to the WWF Rules numbers and other IW WEF documents are in brackets and displayed in sans serif type A LONG TIME BEFORE THE TOURNAMENT As soon as you have been appointed to officiate the first actions can happen 1 Find out which level of Homologation is intended 2 See who the other officials are and check that their qualifications are sufficient for the homologation level IWWF Additional Rules 3 Find out the the Latitude and Longitude of the site http itouchmap com latlong htm works very well If using a service such as Google Earth often a lot can be learned about the site before going there Try to find out about prevailing winds currents tides as well as course orientation sunrise amp sunset times http www timeanddate com worldclock sunrise html 4 Look up the Competition code and the Site code http www iwsftournament com homologation showsites php If there are none assigned contact the national federation If in Europe the regional confederation issues site and competition codes http www waterskitournament eu 5 Contact the organiser with any questions about the site technical installations competitor numbers rule anything that may impact the homologation Arrange your trip ensuring that the organiser has allowed enough time for you to do the sur
3. height of the lower cable above the water at the towers each end and in the middle under a 70 kg load From the Lion homologation computer program provide the technical officer with speed times Measure and adjust the lines from the ball closest to the handle to the inside of the handle Lines must be pre stretched Do not accept lines longer then the nominal length because the tolerance may be exceeded when stretched during the tournament Measure the jump at all heights to be used according to rule 11 4 and enter the dimensions on the electronic dossier Inspect the speed indication system and check the times by stopwatch Check the judges positions for trick and slalom and end gate video if used Rule 12 9 12 10 Check the operation and timing of the semi automatic trick timing device or video trick timing device Collect the video jump results electronic files when complete Collect the completed results from the calculator in all available electronic file formats Email all results files the homolgation survey file including the completed dossier and jump results files to Joost de Leyer email lt j leyer planet nl gt Retain for 1 year any paper start lists results surveys and electronic files for reference in case of any query EQUIPMENT Much of Homologation is about measuring checking and adjusting Every homologator will have their own bag of tools and special bits of string et c which they are comfortable and confiden
4. right Pick at least 2 reference points in case the view to one of them becomes obstructed later in the week At this point it is worth emphasising that there is an advantage in using an instrument which can communicate directly with your computer If you are able to mount your computer close to your total station and the readings are transmitted directly into a homologation program the possibility for typological errors is almost eliminated The Lion program supports many instruments already and if possible this facility should be used http waterski online fr download homologation html 6 Slalom It is worth establishing that the axes are good to start with Especially if working with multiple stations Survey the entry and exit gates If they are in tolerance and the 3 axes look good then carry on If not fix them first When working with a linked computer and total station a complete scan of the course can be done very quickly giving an overall picture of the state of the course This should be done if the lake is cold and your assistants want to get wet for the least time When the slalom survey is finished and all buoys are in tolerance look across the course to see that the turn buoys line up with the boat lane buoys Often usually with individually anchored courses the buoys are in tolerance but the lines are not absolutely straight Try to get the buoys in tolerance and to line up so that the site looks tidy Survey th
5. used to damp the surface buoy tugging at the solid anchor This is recommended A standard diameter buoy displaces around 6 3 litres which equates to a hefty pull when a wakeboard wake submerges it Check that there is a reliable and fast system for replacing or removing buoys 3 Next look at the ramp 13 02 Often it has been neglected and may need repairs It is good to identify problems early If it needs attention then this should be started now There should be a minimum of 40m from the centre of the ramp to the closest shore IWWF Tournament manual 4 01 If less then consider the safety measures Check the surface aprons jack waxing watering system Check that the flotation is even and resilient And that the balance is even Check the anchoring is secure and the anchor lines are free of weed Look to see if there is any shock dampening system on the anchor lines This greatly helps to ease the shock to the anchors and ramp and should be encouraged especially if wakeboard is happening at the same site Al5kg weight attached to each line about 1m underwater usually does the job nicely Dampening also reduces yaw in the ramp The ramp surface should not look too clean It is preferable for the jumpers to have a surface which has some detail on which to focus If the ramp is spotless then have someone smear some contrasting shoe polish into the wax to break up a large visually flat area Ideally the area between 6 4m and 6 8m will
6. It is difficult to check that the speed control system is completely accurate It is only possible to check for gross error and this should be done Slightly more accurate than a stopwatch is to sit in the boat and video the wake close to the transom whilst it is passing through the slalom course Note the time on the speed control for the complete pass Next run the video through the trick timer Compare gate to gate times with the boat readings or look at the frame count and divide by 25 or 30 at 58kph the frame count should be 401 403 14 In the Judges Tower By now the Technical Officer should be set up All recording devices should be recording at full frame rates ie 25 fps in SO Hertz countries and 30fps in 60 Hertz countries Slalom look to see that the boat video quality is of good enough Check that the gate video and end course videos are the correct size 14 10 amp 14 15 If you are not doing live end course monitoring with software it is important that the picture is central and level for the end course judge Pinpointing this position during the survey really helps to get this correct Make sure all the recording machines work and that the operators really know how to use them Jump see that the pictures are clear Look at the x amp y readings from the video jump system of all buoys and compare with your survey numbers With Corson based systems you can and should use the homologation level checking facilities Ensure
7. O SEND FILES TO REGION WHO SENDS WHICH FILES TO WHO IF CALCULATOR IS USING THE LION SCORING PROGRAM THEN THEY SHOULD INCLUDE THE hom FILE Homologation dossier including Upload to surveys and Officials list hom http Awww iwsftournament com homologatio ASIA HOMOLOGATOR n UploadDossiers htm ae Setup andlognles email to Hanifah Yoong Yin Fah lt hanifah waterski com my gt Jump set up and log files email to Hanifah Yoong Yin ASIA HOMOLOGATOR txt Fah lt hanifah waterski com my gt Tournament Scores Upload to HOMOLOGATOR htm pdf txt or csb http www iwsftournament com homologatio ASIA OR CALCULATOR n UploadScorebooks htm email to Hanifah Yoong Yin Fah lt hanifah waterski com my gt Tournament scores plus jump times email to Hanifah Yoong Yin ASIA CALCULATOR wst wsk pdf htm txt Fah lt hanifah waterski com gt Ranking list data iwwf Hanifah Yoong Yin Fah Trick Video No 45 1 Jalan Seri Putra 1 4 ASIA HOMOLOGATOR End Course Slalom Bandar Seri Putra i espansibiiiyor End Course Jump Bangi l 43000 Kajang Organiser P Selangor Malaysia Homologation dossier including Upload to surveys and Officials list hom htto Awww iwsftournament com homologatio AUSTRALIA HOMOLOGATOR n UploadDossiers htm a sokup andlogfies email to Bruce Cockburn txt lt bruce cockburn bigpond com gt Jump set up and log files email to Bruce Cockburn AUSTRALIA H
8. OMOLOGATOR txt lt bruce cockburn bigpond com gt Tournament Scores Upload to HOMOLOGATOR htm pdf txt or csb http www iwsftournament com homologatio AUSTRALIA OR CALCULATOR n UploadScorebooks htm email to Bruce Cockburn lt bruce cockburn bigpond com gt Tournament scores plus jump times email to Bruce Cockburn AUSTRALIA CALCULATOR lt bruce cockburn bigpond com gt wst wsk pdf htm txt Ranking list data iwwf Bruce Cockburn HOMOLOGATOR Trick Video 25 Fernleigh Loop AUSTRALIA Sa End Course Slalom Adamstown Heights responsibility of End Course Jump NSW Australia Organiser E amp A HOMOLOGATOR Jump set up and log files email to Marc Raymond txt lt SKIRAYMO aol com gt Trick Video Donal Connelly E amp A HOMOLOGATOR End Course Slalom SplashEye End Course Jump 13 Heaney Avenue Parkwest Dublin 12 lreland Tournament Scores Upload to IWWF and E amp A sites directly via Homologation dossier the Lion Scoring program E amp A CALCULATOR Jump times Ranking list data hom email to Marc Raymond wst wsk pdf htm txt lt SKIRAYMO aol com gt iwwf Upload to Homologation dossier including http www iwsftournament com homologatio PANAM HOMOLOGATOR surveys and Officials list hom n UploadDossiers htm email to Bob Corson lt bob corson gmail com gt PANAM HOMOLOGATOR Jump set up and log files email to Bob Corson
9. Water Ski Homologation A good practice guide INTRODUCTION The purpose of this document is to outline good practices which are aimed at helping homologators achieve a successful competition This is not an A B C of how to do the job There are many ways to skin a cat and I do not wish to dictate particular methods to competent homologators Homologators must feel comfortable and confident in the way they work Unconventional approaches are perfectly acceptable it is the results which are important No good practice guide can ever be complete and I look forward to contributions from other homologators It is mandatory for the homologator to be on site at all RL amp RC homologated competitions Homologators are the police officers of the tournament who must check that all conditions comply to the standards set out in the rulebook These standards must be equal at all events so that competitors and officials can perform fairly The homologator s job is far reaching and will include Physical measurements of courses and equipment including skiers equipment Checks of other officials and their procedures Ensuring that rules are being followed and that rule 1 11 is not being abused Compiling all the information into a dossier Administration of the dossier and any recorded information Management of evidence needed for record submissions Many good people have written and published comprehensive check lists for homologators to follow These are
10. be solid white so that the skiers can see where the water breaks If you are happy with the condition and all the measurements are in tolerance then work out the ramp settings 13 02 amp ramp setting chart Mark the adjustments settings clearly If possible make marks on the ramp which can be seen from the shore Draw or mark a small target at the top corners of the front of the ramp These help your assistant place the reflector in consistently the same place If using a reflectorless Total Station then small sticky retro reflective targets are ideal for getting fast results 4 Back to your Total Station which is now temperature stabilised If you have been travelling it is worth running through a check and adjust routine Most instruments have an inbuilt program which guides you through this You all know how to operate your own instruments so check offsets check prism constants choose EDM modes check download parameters check angular units et c Computers fail or they fall in the lake Frequently Backup all your files onto a stick or save them to an online location such as _https www dropbox com or http www sharefile com 5 The survey Ideally do this when the water is calm and there is no current Buoys should be tight and at the correct level If the site is tidal then schedule the survey for when the tide is changing and work fast http www tidetime org Angles should be low on the left and higher on the
11. e landing point When surveying the cameras try to establish approximately where the iris is and survey to that point 9 Trick The course should be as straight as possible and the 50 m distance should be about the same both ends Ensure that there is space for the boat to pass either side of the buoys and that there is enough distance between the start buoys for fast skiers to do 20 seconds 10 Optional boat turn buoys IWWF rules diagrams 3 4 amp 5 are recommended especially if the water is large or lacking in features In addition sometimes drivers need targets to aim for usually with jump Any extra buoys or targets should be surveyed and their position noted These extras often get tidied up by others and so need to be re set 11 Print out all the surveys with diagrams Draw up the ramp setting graph Record the true distances of the 150 180 amp 210 buoys Draw a map of the competition areas mark on the courses ramp tower first aid docks shallow or deep areas any non standard coloured buoys boat paths jump distance display and anything else significant Write down where and when handle and jump rope measurements will take place Post all these documents together with a copy of the Homologation notice when ready on the Athletes area bulletin board 12 Ropes and handles Look at the tournament ropes to see that they are of the correct quality 10 04 and type for example with or without switc
12. e point where the end course video cameras 13 08a amp 14 15 will be mounted to check that they are in line 7 Jump Generally it is preferable to get the course in tolerance first before moving the ramp Try to get the 150m 180m and 210m buoys as close as possible to actual These are important for the skiers and if they have to be removed for other events ensure that they return to the same spots When you are happy with the course ramp position and angle put a mark on the shore in line with the front edge of the ramp This helps with ramp position checking HEXM in the AWSA program 8 Video Jump First draw a picture of the buoys and the ramp marking colours and relationship to other course buoys Whichever system is used it is important that the set up and check buoys are tight and that they don t move around too much in the wind It is also advisable to alternate the colours so that they are easy to identify on the software It is usually more convenient to survey from a point in front of the ramp where your targets can be seen clearly If this is a different point from the other course surveys then make sure to mark it If using a Corson based system then a check should be made that the camera positions and heights are suitable to give accurate results VJ VIEW is free and quite easy to use http www awsaeast org official download php getfiles If using a trigonometric system check that the boat will not obstruct the view of th
13. g an eye on all the proceedings on the water and on the shore Things go wrong things break so be prepared Go through the dossier and double check that everything is correct Note the way that the judges are judging and who is doing what in the tower Record any deviations in the remarks tab COMPETITION DAYS at the end of every day i et eS Check that the tournament ropes are still in good condition Store them securely Collect the day s end course and trick videos from the cameras and make copies Install or remove any buoys in preparation for the next day Put batteries on charge De brief with Chief Judge amp Technical Officer Order a beer AT THE END OF THE COMPETITION 1 2 Collect all the videos from the cameras and copy Jump End Course Slalom End Course and Trick Copy the jump log file from the jump measurement computers These are the text files with all the jump set up details and actual jump details from each competitor Copy also the file containing the measurement photos from each jump a If the Calculator is using the Lion Scoring Program Give the calculator your completed homologation dossier to be uploaded to the IWWF site together with the scores and Ranking list details b If the Calculator is not using the Lion program Go to IVWFED COM and upload the homologation dossier Then ask the calculator to upload all their files to the same site They will upload wst wsk html files for scores Make s
14. h section 10 04 j They should all be from the same manufacturer and be of similar age Inspect them for damage knots fraying et c If they are new then send them away to be skied on first Nothing conditions a new rope better than for it to be used Check that the slalom ropes have enough shortenings 10 04f if not make some more and insert them With your 20kg load measure all the ropes without handles Measure to the inside of all shortening loops To allow for stretch during use the numbers should be favouring the low side of tolerance Adjust the ropes so that they are well matched to each other There should be no more than 1cm difference between them at all shortenings If ropes have to be lengthened then beware that the the resulting splices are at least 15 cm in length Mark and number all the ropes at both ends Keep them in a safe place Keep also your measurements for each rope The organiser should have supplied a handle measuring device which will live on the dock If not make something Check that this works that it also measures the bridle V and that the measurements are accurate and are taken to the inside of the handle IWWF Rules diagram 9 If correct measure and mark up the tournament supplied handles 13 Boat Prepare the windscreen centre marks if necessary 14 15 If using Splasheye Drive automatic end course tracking then ensure the targets are secure unobstructed and unobstructing Ifa slalom camera
15. is best made by using a combination of weights eg 10kg 20kg 20kg and if so these weights should be marked If using trick boat path speed sheets see appendix ensure there is an ample supply Check there are spare bibs Fire extinguisher Conduct a Radio check 2 Boat Check for shocktubes trick release flags judges display jump switch soap Check the cameras record and transmit properly There should be spare recording media on board Is the video operator competent and confident Go out with the driver to re map the course and check the courses are clear safe and complete Is the boat safe Trip hazards loose cargo et c Conduct a Radio check 3 Ramp Before commencing jump it is prudent to do a quick survey of 15ST 15MT R1 amp R2 to check the ramp is still in position Check the height is correct and the water is running Make sure the standby crew know when and where to pick you up for ramp height changes 4 Tower Is everything switched on and working Are the correct judges in place and awake Check that all recorders are recording Check there is plenty of blank recording media Is the jump display working and in a clear spot With jump run the video measurement software for a couple of empty jumps to record the check buoys Compare the numbers with the day before and your survey Estimate the largest and smallest jump that the equipment can measure accurately is the range sufficient for the competitio
16. n Calculator It is important that the Homologator and Calculator are using exactly the same protocol for naming files This should start with the competition number For instance if calculator create a file called 13INA015 indonesian nationals wst then the homologator will create 13INA015 indonesian nationals hom Ensure also that you are all using the same site code Overall records can be difficult to spot If it is a 3 event competition ask the calculator to be on the lookout for potential overall records and to inform you immediately if there is a possibility of one so that you can take action Radio check Standby crew Are they ready and in position Do they have spare buoys string knife et c Radio check Rescue boat s Ensure the crews are properly briefed and that the Safety Director has also briefed them Medical requirements on board Radio check Swimmers Should be wearing life jackets and ready to swim Ensure that the Safety director has spoken to them and they are confident they know what they are doing Cameras Double check that all cameras are programmed with the correct date and time Safety Have a look around for anything dangerous Particularly check cables are clear of traffic or out of reach Look to see that there is a clear path to and from the ambulance and that it has a clear exit With the competition under way the homologator will be shuttling between the dock and the tower as well as keepin
17. rope follower is being used check it is smooth and not snagging If it is misbehaving start looking for lightweight camera operators Check the shock tubes for condition 10 04i Find the flags 8 05 Make sure the fire extinguisher is charged IWWF Safety Manual 6 01 3 3 Check that there is a serviceable trick release 15 11 If using a video operator for tricks it is important that they have a high enough viewpoint to see the ski behind the rooster tail 15 15 This often means standing on the seat or sitting on the dashboard A dedicated raised video operators seat is the best solution but if none exist arrangements should be made to find a comfortable and safe way to raise the operator Find the software version of the speed control being used With ZeroOff this can be found on the diagnostics screen Look for a number and a letter Go for a drive with the driver and check the second display 10 07 works and the jump switch works See that the boat is being mapped according to manufacturers specifications for slalom check both ways and jump 10 10 ZeroOff systems Map to the aerial pucks for slalom and to the pylon for jump https www zerogps com sites default files pdfs Zero Off RevQ User Manual January 2009 pdf page 29 Agree with the chief driver a schedule for checking and re mapping during the competition Re mapping should happen at the start of every day and mapping checks should happen before every series round
18. t with As long as the measuring tools are accurate there is no problem You all know what you need and what works for you I only want to comment on the following 2 pieces of equipment which are at the soul of the job 1 Your head with working eyes and ears This needs to be turned on from before the job starts until sometime after the event 2 Your Total Station or theodolite This is the most complex piece of equipment the homologator uses and it is therefore desirable to own an instrument In all cases it is advantageous to have a data download facility During surveys most errors are due to incorrect reading writing or copying Linking your total station directly to your laptop means that there is never a mistake inputting the wrong figures If you are using the Lion Homologation program then support is already built in for several types of instrument If using the AWSA spreadsheets then you need to write your own script but the effort is worthwhile Being able to have instant results not only speeds up the surveys it speeds up the problem solving
19. tected and usable even when thousands of spectators show up Ideally you should be able to leave your tripod set up all the time 2 Mount up your total station or theodolite and let it adjust to the ambient temperature whilst you do something else 3 Go out onto the lake and inspect the courses Test the depth of the water and if it is not fairly consistent then note any very shallow or very deep areas Note any currents their direction and strength Look out for any underwater debris pipes broken bottles cables et c anything which could be dangerous to anyone in the water Pay close attention to the dock start areas Measure the buoy diameters and floatation levels 14 05 Correct anything out of tolerance Torpedo buoys often float off axis if they are not pulled down enough Drivers like these to be consistent If it is a floating course inspect the structure the attachments the tensioning Look to see that the cables and booms are clean and not overgrown with weeds or algae If so these should be cleared Check that the course is floating level and that no parts are dangerously high Look at the system for replacing removing buoys See what happens to the course when some buoys are removed For individually anchored buoys check that the anchors are heavy enough and that the attachment points are accessible If sub buoys are being used then check that these are deep enough not to cause damage Often a length of shock cord is
20. that the correct offset is being applied 2 1m for Tournament and 0 0m for barefoot 13 10 Trick Check the trick timer using a camera and an accurate stopwatch 11 03 Beware of stopwatches found on mobile phones which are often very inaccurate Find a digital stopwatch which measures to 1 100 of a second or if you have internet try http stopwatch onlineclock net Homologators need to save the end course and trick videos These should be taken from the camera rather than the 2 generation recordings from the tower The cameras should be set with the correct time and date 14 15 Despite all the technology and fine video pictures judges still like to look out of the window and calculators like dark corners Keep the view clear COMPETITION DAYS before competition starts 1 Dock Take the ropes to the dock and brief the dock starter on rope changing and rotation Make sure they know what to do in the event of a potential record Does the starter have the correct start lists Check there is plenty of soap It is nice if there are also some basic tools to make quick ski repairs adjustments Check for scales if needed and that the handle measuring device is there and has not been tampered with Brief the dock marshall on handle measuring It is very useful to have a blackboard whiteboard to communicate to the boat crew speeds letters skiers names et c For trick there should be weights ready totalling 50 kg 15 11 This
21. ure that they have included the jump times If they are a Federation or region assigned person they can also upload the iwsf ranking list file If they are not an assigned person this file needs to go to the regional person who is The upload process is simple and explained on the IWWFE site For RL and RC competitions all files and video files or tapes should be sent to the relevant confederation councils care of the following people Video should be from the cameras and for trick should be AVI type A note on AVI This was a file format invented in the days when digital editing was starting to be popular but people were still originating in analogue Running analogue video through a digital video converter and capturing software would create an AVI file which could be edited digitally There are no cameras which create native AVI files AVI files can be created from most types of codec using transcoding programs Cameras which record directly MPEG 4 or DVD should be avoided for trick videos because frame integrity is not secure Most current camcorders will record onto an SD card in a format called AVCHD This opens readily on modern computers can be edited with most editing packages and retains frame integrity These files are not AVI files but they are AVI type files The format uses a lot of compression so if you run them through transcoding software to create true AVI files quality will be lost RL RC COMPETITIONS WHO T
22. veys and adjust the courses with the help of the local crew Make clear what homologation equipment you want the organiser to supply 6 Ask if there is anyone needing homologation training or who wants to be an official assistant Any keen new homologators need to be encouraged AT THE SITE BEFORE THE COMPETITION 1 Meet the people who will be working on the course If you have no common language then come up with some sign language Make sure they have spare buoys attachments ropes to hand Meet the Safety director 7 ask about the safety protocol Safety is everyone s responsibility We must all be vigilant and always try to work in a safe manner Meet the Technical Officer and confirm systems and technology to be used Speak to the Chief Judge and agree on Homologation level to be aimed for Establish where bulletin boards will be located Walk around the site and look at the courses IWWF Rules diagrams 1 5 towers 14 04 14 11 camera positions IWWF rules diagram 6 14 15 judges tower note any buoys close to the shore overhanging trees et c Look from the end of the slalom course and see that the lines are straight and then look across the course for the same Check the buoy colours diagrams 1 amp 2 Find a good position to set up your total station or 3 good places if you are doing a 3 station survey with theodolite The position s should be in a place which you can return to throughout the competition They should be pro
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