New Posts New Posts RSS Feed: iPhone and Course Setting
  FAQ FAQ  Forum Search   Register Register  Login Login

iPhone and Course Setting

 Post Reply Post Reply Page  12>
Author
davidyacht View Drop Down
Really should get out more
Really should get out more


Joined: 29 Mar 05
Online Status: Offline
Posts: 1345
Post Options Post Options   Quote davidyacht Quote  Post ReplyReply Direct Link To This Post Topic: iPhone and Course Setting
    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.
Back to Top
jeffers View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 29 Mar 04
Location: United Kingdom
Online Status: Offline
Posts: 3048
Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 9:42am
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
Back to Top
gordon1277 View Drop Down
Really should get out more
Really should get out more


Joined: 24 Mar 10
Location: United Kingdom
Online Status: Offline
Posts: 665
Post Options Post Options   Quote gordon1277 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 9:47am
The RYA have a deal on a garmin gps which will do the job and waterproof so less nerve racking!
Gordon
Lossc
Back to Top
davidyacht View Drop Down
Really should get out more
Really should get out more


Joined: 29 Mar 05
Online Status: Offline
Posts: 1345
Post Options Post Options   Quote davidyacht Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 9:50am
Thanks Jeffers,

Idea was to track out from the start to get the Windward mark at the right distance, then adjust for direction.  

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!
Back to Top
RTFM View Drop Down
Groupie
Groupie


Joined: 23 Nov 10
Online Status: Offline
Posts: 41
Post Options Post Options   Quote RTFM Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 10:36am
The iphone app iYachtRace 

https://itunes.apple.com/hk/app/iyachtrace/id453236524?mt=8

Is worth maybe a look at...
Nobby.
Back to Top
davidyacht View Drop Down
Really should get out more
Really should get out more


Joined: 29 Mar 05
Online Status: Offline
Posts: 1345
Post Options Post Options   Quote davidyacht Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 10:56am
Hi Mark,

If it works this would be ideal, have contacted them ref compatibility with iphone 4
Back to Top
Brass View Drop Down
Really should get out more
Really should get out more


Joined: 24 Mar 08
Location: Australia
Online Status: Offline
Posts: 1151
Post Options Post Options   Quote Brass Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 1:13pm
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.
Back to Top
tgruitt View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 02 Dec 04
Online Status: Offline
Posts: 2479
Post Options Post Options   Quote tgruitt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 1:17pm
What does PING stand for?
Needs to sail more...
Back to Top
Brass View Drop Down
Really should get out more
Really should get out more


Joined: 24 Mar 08
Location: Australia
Online Status: Offline
Posts: 1151
Post Options Post Options   Quote Brass Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 1:48pm
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.
Back to Top
tgruitt View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 02 Dec 04
Online Status: Offline
Posts: 2479
Post Options Post Options   Quote tgruitt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 14 at 2:09pm
Ah ok thanks. I've never heard one go ping before, unless my microwave is GPS enabled?  LOL
Needs to sail more...
Back to Top
 Post Reply Post Reply Page  12>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy