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iPhone and Course Setting |
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davidyacht ![]() Really should get out more ![]() Joined: 29 Mar 05 Online Status: Offline Posts: 1345 |
![]() ![]() ![]() ![]() Posted: 23 Oct 14 at 9:38am |
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. |
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jeffers ![]() Really should get out more ![]() ![]() Joined: 29 Mar 04 Location: United Kingdom Online Status: Offline Posts: 3048 |
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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.
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Paul
---------------------- D-Zero GBR 74 |
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gordon1277 ![]() Really should get out more ![]() Joined: 24 Mar 10 Location: United Kingdom Online Status: Offline Posts: 665 |
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The RYA have a deal on a garmin gps which will do the job and waterproof so less nerve racking!
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Gordon
Lossc |
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davidyacht ![]() Really should get out more ![]() Joined: 29 Mar 05 Online Status: Offline Posts: 1345 |
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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! |
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RTFM ![]() Groupie ![]() Joined: 23 Nov 10 Online Status: Offline Posts: 41 |
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The iphone app iYachtRace
https://itunes.apple.com/hk/app/iyachtrace/id453236524?mt=8 Is worth maybe a look at...
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Nobby.
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davidyacht ![]() Really should get out more ![]() Joined: 29 Mar 05 Online Status: Offline Posts: 1345 |
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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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Brass ![]() Really should get out more ![]() Joined: 24 Mar 08 Location: Australia Online Status: Offline Posts: 1151 |
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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 The basic functions required were in this post 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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tgruitt ![]() Really should get out more ![]() ![]() Joined: 02 Dec 04 Online Status: Offline Posts: 2479 |
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What does PING stand for?
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Needs to sail more...
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Brass ![]() Really should get out more ![]() Joined: 24 Mar 08 Location: Australia Online Status: Offline Posts: 1151 |
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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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tgruitt ![]() Really should get out more ![]() ![]() Joined: 02 Dec 04 Online Status: Offline Posts: 2479 |
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Ah ok thanks. I've never heard one go ping before, unless my microwave is GPS enabled?
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Needs to sail more...
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