Print Page | Close Window

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
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
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
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
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!


Posted By: RTFM
Date 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.


Posted By: davidyacht
Date Posted: 23 Oct 14 at 10:56am
Hi Mark,

If it works this would be ideal, have contacted them ref compatibility with iphone 4


Posted By: Brass
Date 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

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.


Posted By: tgruitt
Date Posted: 23 Oct 14 at 1:17pm
What does PING stand for?

-------------
Needs to sail more...


Posted By: Brass
Date 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.


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? LOL

-------------
Needs to sail more...


Posted By: iGRF
Date Posted: 23 Oct 14 at 2:29pm
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
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
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
there's plenty of waterproof cases for smartphones with "touch" cases.

-------------
-_
Al


Posted By: JimC
Date Posted: 23 Oct 14 at 8:28pm
Originally posted by iGRF

PING is also a Unix term.

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
Originally posted by gordon1277

The RYA have a deal on a garmin gps which will do the job and waterproof so less nerve racking!

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
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
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
Originally posted by JimC

Originally posted by iGRF

PING is also a Unix term.

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]

010010010010000001110011011010000110111101110101011011000110010000100000011010000110000101110110011001010010000001101011011011100110111101110111011011100010000001100010011001010111010001110100011001010111001000100000011101000110100001100001011011100010000001110100011011110010000001100001011101000111010001100101011011010111000001110100001000000111010001101111001000000110001101100001011100000110100101110100011000010110110001101001011100110110010100100000011000010110111000100000011000010110111001101111011100100110000101101011

-------------
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



Print Page | Close Window

Bulletin Board Software by Web Wiz Forums® version 9.665y - http://www.webwizforums.com
Copyright ©2001-2010 Web Wiz - http://www.webwizguide.com