iPhone and Course Setting
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=11730
Printed Date: 10 Jul 25 at 11:31am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: iPhone and Course Setting
Posted By: davidyacht
Subject: iPhone and Course Setting
Date Posted: 23 Oct 14 at 9:38am
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Has anyone used an iPhone to set courses. I am looking to measure out .7 mile windward leg and it would be great to be able to drive up the beat at a bearing and drop the mark against a set distance.
Even better would be something that works out the wing mark position based on an angle and guides me in. I guess that there may be some apps that do this in a different application, orienteering maybe? Any suggestions greatly recieved. If it does not exist, it could be a useful app to develop. Otherwise I shall resort to traditional methods. |
Replies:
Posted By: jeffers
Date Posted: 23 Oct 14 at 9:42am
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There may be an app, you could probably use something like RunKeeper or similar to get the distance. As wind direction is constantly shifting going using a bearing might not work too well. ------------- Paul ---------------------- D-Zero GBR 74 |
Posted By: gordon1277
Date Posted: 23 Oct 14 at 9:47am
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The RYA have a deal on a garmin gps which will do the job and waterproof so less nerve racking! ------------- Gordon Lossc |
Posted By: davidyacht
Date Posted: 23 Oct 14 at 9:50am
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Thanks Jeffers, I am less concerned about wing mark position, since can usually set this up by a bearing, and eye, but thought an app where you track up wind, clock your position, then homes you into a wingmark position based on distance and bearing, would be quite a useful tool, without having to buy and set up a GPS unit. Might be able to use Ski Tracks for the distance though not a lot of vertical (I hope)!
We don't run a lot of sea meetings and historically we have set things up by eye, this tends to produce very long beats ... hey I am in the committee boat so the pain does not matter! |
Posted By: RTFM
Date Posted: 23 Oct 14 at 10:36am
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The iphone app iYachtRace https://itunes.apple.com/hk/app/iyachtrace/id453236524?mt=8 Is worth maybe a look at... ------------- Nobby. |
Posted By: davidyacht
Date Posted: 23 Oct 14 at 10:56am
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Hi Mark, If it works this would be ideal, have contacted them ref compatibility with iphone 4
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Posted By: Brass
Date Posted: 23 Oct 14 at 1:13pm
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No doubt someone could develop an app if they could be bothered. We recently had a thread about using GPS for mark-laying in the Race Management forum http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=11553&title=garmin-gps-72h" rel="nofollow - http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=11553&title=garmin-gps-72h The basic functions required were in this post http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=11553&KW=garmin&PID=1367870&title=garmin-gps-72h#1367870" rel="nofollow - http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=11553&KW=garmin&PID=1367870&title=garmin-gps-72h#1367870 Meanwhile, what you seem to be wanting is a GPS-like display that will enable you to navigate to a Bearing and Distance from a Reference Point I presume there are plenty of basic GPS Apps for iphone. All you need is is PING Waypoint GO TO Waypoint Display with Bearing and Distance to Waypoint Simplest way to do it is to PING the RC Vessel (or other Reference Point designated by the RO), then use the Reciprocal Bearing to that waypoint and the required distance. You can, if you wish use Project Waypoints and the Sequential Waypoints method, but I find that a PIA in a mark-boat: just one PING and GO TO, using Reciprocal Bearing is by far the simplest The RYA provides ready reckoner tables with the bearing and distance from the Reference Point to the Wing Mark for Trap and Triangle courses. 70 Degree Trap and 60 Degree Triangles are really easy using Common Reference Point 70 Degree Trap, Distance to the OW mark equals the Distance to the IW mark, and Bearing (from Reference Point (IL, or Centre of SL) is Bearing of Windward Leg minus 40 degrees. 60 Degree Triangle, Distance to OW equals the Distance to the IW mark, and Bearing is Bearing of Windward Leg minus 60 degrees. Other combinations use the Ready Reckoners.
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Posted By: tgruitt
Date Posted: 23 Oct 14 at 1:17pm
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What does PING stand for?
------------- Needs to sail more... |
Posted By: Brass
Date Posted: 23 Oct 14 at 1:48pm
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It's not an acronym: it's a noise. A GPS is a machine that goes PING. To Ping an object is to use a GPS functionality to MARK, or RECORD CURRENT POSITION AS Waypoint.
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Posted By: tgruitt
Date Posted: 23 Oct 14 at 2:09pm
Ah ok thanks. I've never heard one go ping before, unless my microwave is GPS enabled? 
------------- Needs to sail more... |
Posted By: iGRF
Date Posted: 23 Oct 14 at 2:29pm
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PING is also a Unix term.
And a Submariners term... 'Just one ping vassilli' ------------- https://www.corekite.co.uk/snow-accessories-11-c.asp" rel="nofollow - Snow Equipment Deals https://www.corekite.co.uk" rel="nofollow - New Core Kite website |
Posted By: maxibuddah
Date Posted: 23 Oct 14 at 3:16pm
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Everyone should have a machine that goes ping ------------- Everything I say is my opinion, honest |
Posted By: MerlinMags
Date Posted: 23 Oct 14 at 3:18pm
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At the risk of advertising or endorsing a product, I see http://www.yachtsandyachting.com/news/179673" rel="nofollow - Rooster now have a waterproof iPhone case , where you can actually still 'swipe' the screen and use it on the water without worry.
Am tempted to get one because hiding my phone in the car when sailing is annoying. |
Posted By: alstorer
Date Posted: 23 Oct 14 at 8:20pm
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there's plenty of waterproof cases for smartphones with "touch" cases. ------------- -_ Al |
Posted By: JimC
Date Posted: 23 Oct 14 at 8:28pm
Absolutely and definitively isn't! [anorak]ping, lower case is a utility found in most TCP/IP platforms, including nearly all Unix installations these days, but PING would be something quite different...[/anorak] |
Posted By: winging it
Date Posted: 23 Oct 14 at 9:23pm
It's probably the 72h, which works in exactly the way Brass describes. Very simple to use once you know the steps. I bought mine on eBay, well worth it for decent mark laying. ------------- the same, but different... |
Posted By: maxibuddah
Date Posted: 23 Oct 14 at 9:42pm
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ping is a network command isn't it? There is also finger used on unix ------------- Everything I say is my opinion, honest |
Posted By: RTFM
Date Posted: 27 Oct 14 at 11:46am
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Hi David, I spoke to the author of the app, last Sunday (he is a member of Chichester YC also ) and he confirmed that it does indeed run on the iphone 4. ------------- Nobby. |
Posted By: davidyacht
Date Posted: 27 Oct 14 at 2:12pm
| Have loaded it on and shall report back, since on the face of it this is a useful tool. |
Posted By: iGRF
Date Posted: 27 Oct 14 at 2:29pm
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