Tools for Setting Marks for Yacht Races

I have developed a New Free WebApp tool to help race officers set up the marks for yacht races. You simply enter the wind direction and the windward leg length, and the tool provides the bearings and back- bearings for all Marks => for Both Triangle and Trapezoid courses. Another option provides lat/longs for all Marks after the user clicks a Geolocation button at the bottom mark as the reference point. No more fiddly tables.
I would like to get some feed-back on it. 
See https://www.setcourses.com
some examples 
Triangle LatLong  =>  http://www.setcourses.com/triangle_latlong.html

Simple Triangle 60-60-60 => https://www.setcourses.com/triangle60.html

Trapezoid Lat/Long => http://www.setcourses.com/trapezoid_latlong.html

Cheers
John

Edited by Laser3 - 19 Aug 19 at 6:53pm

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Laser3 Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 18 Aug 19 Location: Jervis Bay Online Status: Offline Posts: 9	Post Options Post Reply Quote Laser3 Report Post Quote Reply Topic: Tools for Setting Marks for Yacht Races Posted: 19 Aug 19 at 5:37pm
	I have developed a New Free WebApp tool to help race officers set up the marks for yacht races. You simply enter the wind direction and the windward leg length, and the tool provides the bearings and back- bearings for all Marks => for Both Triangle and Trapezoid courses. Another option provides lat/longs for all Marks after the user clicks a Geolocation button at the bottom mark as the reference point. No more fiddly tables. I would like to get some feed-back on it. See https://www.setcourses.com some examples Triangle LatLong => http://www.setcourses.com/triangle_latlong.html Simple Triangle 60-60-60 => https://www.setcourses.com/triangle60.html Trapezoid Lat/Long => http://www.setcourses.com/trapezoid_latlong.html Cheers John Edited by Laser3 - 19 Aug 19 at 6:53pm

davidyacht Send Private Message Find Member's Posts Really should get out more Joined: 29 Mar 05 Online Status: Offline Posts: 1345	Post Options Post Reply Quote davidyacht Report Post Quote Reply Posted: 19 Aug 19 at 6:33pm
	How do you get the app to try out?
	Happily living in the past

Laser3 Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 18 Aug 19 Location: Jervis Bay Online Status: Offline Posts: 9	Post Options Post Reply Quote Laser3 Report Post Quote Reply Posted: 19 Aug 19 at 6:44pm
	It is a Web App which is accessed via the website (it is designed for mobiles) http://www.setcourses.com some examples Triangle LatLong => http://www.setcourses.com/triangle_latlong.html Simple Triangle 60-60-60 => https://www.setcourses.com/triangle60.html Trapezoid Lat/Long => http://www.setcourses.com/trapezoid_latlong.html

Gordon 1430 Send Private Message Find Member's Posts Far too distracted from work Joined: 27 Jun 17 Location: Lee on Solent Online Status: Offline Posts: 310	Post Options Post Reply Quote Gordon 1430 Report Post Quote Reply Posted: 20 Aug 19 at 8:13am
	Hi Laser3 Does it off set for tide, if not it wont be much use on any sea venues as that's the tricky bit to calculate. most race teams for events use GPS on the ribs to ping the committee boat and then work the distance and angle from that. The distance for the windward mark is often worked out from the speed tables for the Olympic classes and working around whatever boats your setting for. For a 400 use 470 for a 2000 use laser radial as a rough guide. I will send a link to a National race officer friend for his opinion. Cheers Gordon
	Gordon Phantom 1430

Laser3 Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 18 Aug 19 Location: Jervis Bay Online Status: Offline Posts: 9	Post Options Post Reply Quote Laser3 Report Post Quote Reply Posted: 20 Aug 19 at 9:42am
	Thanks for that. Cheers

Laser3 Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 18 Aug 19 Location: Jervis Bay Online Status: Offline Posts: 9	Post Options Post Reply Quote Laser3 Report Post Quote Reply Posted: 20 Aug 19 at 6:23pm
	The Bias box could be used for tides. For regattas we have three boats for management. If the race officer (RO) decides there needs to be a course change for a Triangle course, due to a wind shift, he radios the new upwind bearing. All three boast adjust their setcourses tool setting. Boat1 moves the upwind mark using the new back bearing and RO checks the bearing => 'drop'. Boat2 moves the wing mark using the new bearings. RO and Boat1 check => 'drop'. We use bearings rather than lat/longs as we only have 2 GPS units (!!) and changing lat/longs is fiddly. Cheers. Edited by Laser3 - 20 Aug 19 at 6:25pm

Laser3 Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 18 Aug 19 Location: Jervis Bay Online Status: Offline Posts: 9	Post Options Post Reply Quote Laser3 Report Post Quote Reply Posted: 30 Aug 19 at 9:25pm
	I have developed a MAP version draft. It needs a Smartphone with GPS - which I don't have (!!) and so I need some one to give it a try and to provide some feedback see https://www.setcourses.com/try.html This tool provides a virtual GPS unit for Laying the Marks. => Enter the Lat Long for the Reference Location Mark 3 or click RefLoc to set it for your location. => Enter the windward direction and your preferences for the reach angle and leg length, Then Click GO. => This will display a map showing the Mark layout and their positions. =>Then, to set a mark, proceed in its direction. Click the ShowMyLoc button to show your current position as a 'dot'. Click it again and your new position will be plotted. Click GO to clear the 'dots' => If you need to relocate the marks due a wind shift, without moving the bottom reference mark (Mark 3), then simply enter the new direction and the altered position of the marks will be displayed.>To change the reference, either enter its new location, or go there and click MyLoc to reset all the course marks. =>Note: Click MyLoc and ShowMyLoc buttons twice for better accuracy => A Smartphone with GPS is required for accurate positions.