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Old 11-15-2012
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StartLine Sailing Racing Android App

Press Release
-----------------------------------
StartLine Sailing Racing Application for Android.

Arrive at the Starting Line on time at speed then continue around the race course with the Waypoint display.

StartLine by L-36.com was created out of the desire for a better race start and my frustration with the solutions that were available. StartLine uses the concept of Target Speed (measured and entered during the prestart) to translate distance to the starting line to time, which is what everyone really wants to see. By using target speed the readings are still valid even if you do a loop to kill time and are heading away from the line.

StartLine was developed on the race course with an emphasis placed on low probability of error through simple easy to see and understand menus. Each display has a function and is not cluttered with other tasks.

Large high contrast displays make the StartLine easy to read under adverse lighting conditions.

Enter the starting time and if the race committee uses GPS time (which most do), there is no need to synchronize to any 5 minute gun, although the time is easily synchronized to any start sequence if required.

Ping the ends of the line then look at the distance and direction feedback to make sure it was done right.

Location readings are made more accurate by interpolation between GPS events and velocity correction of location. These combine to give extremely accurate readings of time to the line.

In addition there are eight starting strategies with a readout of the time to the selected start layline. This allows you to get in position minutes before the start so you do not have to kill time and speed at the last minute if you are early. This also gives you plenty of time to make corrections if you are late.

After the start, the waypoint display gives direction and time to the mark as well as boat speed and heading. Times take into account the course and compensate for the tacking or gybing required to get to the mark. The program allows multiple waypoints organized in multiple files in a very flexible format. Selection and editing or waypoint files are included in latest version.

For more information visit L-36.com and click on the StartLine tab

StartLine is available on Google Play. Search for “StartLine” (one word)

Contact: startline (at) L-36.com
Website: L-36.com

Android™ is a registered trademark of Google Inc.
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Old 11-15-2012
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Re: StartLine Sailing Racing Android App

Thats a cool ap. I use L-36 for my marine forcast in many instances. I will look into start line
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Old 11-16-2012
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by allene222 View Post
Press Release
-----------------------------------
StartLine Sailing Racing Application for Android.

Arrive at the Starting Line on time at speed then continue around the race course with the Waypoint display.

StartLine by L-36.com was created out of the desire for a better race start and my frustration with the solutions that were available. StartLine uses the concept of Target Speed (measured and entered during the prestart) to translate distance to the starting line to time, which is what everyone really wants to see. By using target speed the readings are still valid even if you do a loop to kill time and are heading away from the line.

StartLine was developed on the race course with an emphasis placed on low probability of error through simple easy to see and understand menus. Each display has a function and is not cluttered with other tasks.

Large high contrast displays make the StartLine easy to read under adverse lighting conditions.

Enter the starting time and if the race committee uses GPS time (which most do), there is no need to synchronize to any 5 minute gun, although the time is easily synchronized to any start sequence if required.

Ping the ends of the line then look at the distance and direction feedback to make sure it was done right.

Location readings are made more accurate by interpolation between GPS events and velocity correction of location. These combine to give extremely accurate readings of time to the line.

In addition there are eight starting strategies with a readout of the time to the selected start layline. This allows you to get in position minutes before the start so you do not have to kill time and speed at the last minute if you are early. This also gives you plenty of time to make corrections if you are late.

After the start, the waypoint display gives direction and time to the mark as well as boat speed and heading. Times take into account the course and compensate for the tacking or gybing required to get to the mark. The program allows multiple waypoints organized in multiple files in a very flexible format. Selection and editing or waypoint files are included in latest version.

For more information visit L-36.com and click on the StartLine tab

StartLine is available on Google Play. Search for “StartLine” (one word)

Contact: startline (at) L-36.com
Website: L-36.com

Android™ is a registered trademark of Google Inc.
If it is not already incorporated, the most useful function I can see would be adding a Tacking Ratio/Start Sequence to establish ones start, a function my Timex Victory watch used to perform before it died.

One sets the "start time" and then near the start establishes a "tacking ratio" by tripping a timer as one crosses the starting line at the reciprocal of the preferred heading at the start, sailing along the reciprocal of the first course line for a time, tacking back toward the start line and tripping the timer again and then sailing ones preferred heading/course at one's best speed for the start and tripping the timer a third time as one reaches the starting line. With this, one has a total time elapsed, time heading away and time heading for the start which are used to establish the taking ratio (e.g. one might sail "away" from the starting line for five minutes and back for seven minutes, hence ones starting run is 5/12ths or 41.67% of the total elapsed time).

With this, near the starting time, when one begins ones final "Starting Sequence", one trips the "Tacking timer" as one crosses the starting line sailing away from the course for the last time before the actual start. Based upon the actual time remaining to the start, the timer sounds a warning a minute or so before the final tack back to the start and then a "tacking signal" when one should make ones tack. With that, one tacks and makes ones best speed back to the starting line and should hit the line at the exact moment of the start assuming the winds remain fairly steady.

For example, if one establishes the 5/12 tacking ratio, above, and one begins ones "Starting Sequence" 8 minutes before the start, as one crosses the stating line one punches the "Start" and sails away from the starting line for 8 x .4167 = 3 min, 20 sec. The "Start Timer" sounds the tacking warning at 2 min 20 secs and then again at 3 min 20 sec. One tacks and sails back to the start at ones best speed and should arrive at the line in 4 min 40 sec or right at the "Start" at ones best speed.

One can do the timing described above with a stopwatch but in a race, it almost requires a dedicated tactician/navigator with that job only and not preoccupied with "driving", trimming, or crew management.

Adding that to your App would be a very worth while effort.
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Old 11-16-2012
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by svHyLyte View Post
If it is not already incorporated, the most useful function I can see would be adding a Tacking Ratio/Start Sequence to establish ones start, a function my Timex Victory watch used to perform before it died.

One sets the "start time" and then near the start establishes a "tacking ratio" by tripping a timer as one crosses the starting line at the reciprocal of the preferred heading at the start, sailing along the reciprocal of the first course line for a time, tacking back toward the start line and tripping the timer again and then sailing ones preferred heading/course at one's best speed for the start and tripping the timer a third time as one reaches the starting line. With this, one has a total time elapsed, time heading away and time heading for the start which are used to establish the taking ratio (e.g. one might sail "away" from the starting line for five minutes and back for seven minutes, hence ones starting run is 5/12ths or 41.67% of the total elapsed time).

With this, near the starting time, when one begins ones final "Starting Sequence", one trips the "Tacking timer" as one crosses the starting line sailing away from the course for the last time before the actual start. Based upon the actual time remaining to the start, the timer sounds a warning a minute or so before the final tack back to the start and then a "tacking signal" when one should make ones tack. With that, one tacks and makes ones best speed back to the starting line and should hit the line at the exact moment of the start assuming the winds remain fairly steady.

For example, if one establishes the 5/12 tacking ratio, above, and one begins ones "Starting Sequence" 8 minutes before the start, as one crosses the stating line one punches the "Start" and sails away from the starting line for 8 x .4167 = 3 min, 20 sec. The "Start Timer" sounds the tacking warning at 2 min 20 secs and then again at 3 min 20 sec. One tacks and sails back to the start at ones best speed and should arrive at the line in 4 min 40 sec or right at the "Start" at ones best speed.

One can do the timing described above with a stopwatch but in a race, it almost requires a dedicated tactician/navigator with that job only and not preoccupied with "driving", trimming, or crew management.

Adding that to your App would be a very worth while effort.

With StartLine you don't need to do the tack ratio thing. You have a timer that tells you how long it will take you to get back to the line. No matter where you start from, what traffic you get caught up in, what direction you are going, you can tell when to turn and head back to the line. For example, if you know it takes you 20 seconds to turn your boat and accelerate, just head away from the line until the "time to burn" readout reads 20 seconds, tack, and go for it.

This is the beauty of using the target boat speed rather than actual boat speed and direction that most apps use. If you use actual boat speed and direction and are heading away from the line, these other apps will tell you that it will take forever to get to the line as you can't get there on the course you are on. With StartLine, you enter your target boat speed either manually or automatically and then all times are based on the speed you will be traveling when you head back to the line.

I have tried the tack back technique and other boats always mess it up. That was one of many things I tried before writing StartLine.

Allen
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Old 11-16-2012
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by allene222 View Post
With StartLine you don't need to do the tack ratio thing. You have a timer that tells you how long it will take you to get back to the line. No matter where you start from, what traffic you get caught up in, what direction you are going, you can tell when to turn and head back to the line. For example, if you know it takes you 20 seconds to turn your boat and accelerate, just head away from the line until the "time to burn" readout reads 20 seconds, tack, and go for it.

This is the beauty of using the target boat speed rather than actual boat speed and direction that most apps use. If you use actual boat speed and direction and are heading away from the line, these other apps will tell you that it will take forever to get to the line as you can't get there on the course you are on. With StartLine, you enter your target boat speed either manually or automatically and then all times are based on the speed you will be traveling when you head back to the line.

I have tried the tack back technique and other boats always mess it up. That was one of many things I tried before writing StartLine.

Allen
With all due respect Allen, I suspect you haven't raced much. One rarely sails at "target" boat speeds despite one's best efforts. The tacking ratio described above uses the conditions and speeds on the water in the event.
N'any case, it was merely a suggestion.
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Old 11-16-2012
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by svHyLyte View Post
With all due respect Allen, I suspect you haven't raced much. One rarely sails at "target" boat speeds despite one's best efforts. The tacking ratio described above uses the conditions and speeds on the water in the event.
N'any case, it was merely a suggestion.
Perhaps I should not have called it target boat speed as that does have another meaning. What you do is sail toward the line in the pre-start and measure your speed and use that as your target. You are therefore sailing at your target speed. In other words, I am following your suggestion of using the conditions and speeds on the water in the event as the target. Just to be clear, you sail toward the line just as you plan on doing in the race. When you are up to speed you click a button that says "use this as your target" and it is entered. You can adjust it up or down if need be.

Last year we did 17 races. We got two thirds, one second, and the rest first.
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by allene222 View Post
Perhaps I should not have called it target boat speed as that does have another meaning. What you do is sail toward the line in the pre-start and measure your speed and use that as your target. You are therefore sailing at your target speed. In other words, I am following your suggestion of using the conditions and speeds on the water in the event as the target. Just to be clear, you sail toward the line just as you plan on doing in the race. When you are up to speed you click a button that says "use this as your target" and it is entered. You can adjust it up or down if need be.

Last year we did 17 races. We got two thirds, one second, and the rest first.
Ah.. Now that makes perfect sense. Good for you. And good/enviable racing record too. Save for beer can races these daze--where starts count none the less--we don't do it much any more. I got sick of gear busters and sometime unreliable volunteer crew at the last moment that left others in the lurch and overworked. And the food/beer costs...whew! Its astonishing how much 6-7 overworked guys can eat in two daze!

Good luck with your App!
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Re: StartLine Sailing Racing Android App

This seems to to be a great app to get a perfect start every time assuming that there are no other boats on the starting line at the same time as you. don't see how this is going to help you to get the pin position in a fleet of guys that know how to start and don't really play fair. timing the start is only a small fraction of the skills needed to get a good start. does the APP come with nerves of steel or a big bag of money so you don't have to worry about sticking your boat in there with the big guys that do have big bags of money.
If you can't sail and get a good start then either go practice or sit home on your Android and pretend to race on a video game.
It is called Sailboat racing not Android Racing.
when I go sailing I leave the computers at home.
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by overbored View Post
This seems to to be a great app to get a perfect start every time assuming that there are no other boats on the starting line at the same time as you. don't see how this is going to help you to get the pin position in a fleet of guys that know how to start and don't really play fair. timing the start is only a small fraction of the skills needed to get a good start. does the APP come with nerves of steel or a big bag of money so you don't have to worry about sticking you boat in there with the big guys that do have big bags of money.
If you can't sail and get a good start then either go practice or sit home on you Android and pretend to race on a video game.
It is called Sailboat racing not Android Racing.
when I go sailing I leave the computers at home.
Actually, in racing out of the Richmond Yacht Club in San Francisco (we've been members since the 1978) and out of Alamitos Bay Yacht Club in soCal (we were members for 20+years) and more recently here in southwest Florida, I found that being able to hit a starting line at speed most often preferable to screwing around in a gaggle of boats vying, often aggressively and noisily, to make the favored end of the line. And folks often did ask me how we managed to start so well so often despite the fact that we weren't the greatest of racers (of course, I kept my watch in my pocket!). But different ships, different long splices, and if Allene's App helps some, good for them and for him/her, eh?
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Old 11-16-2012
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Re: StartLine Sailing Racing Android App

Quote:
Originally Posted by allene222 View Post
Press Release
-----------------------------------
StartLine Sailing Racing Application for Android.

Arrive at the Starting Line on time at speed then continue around the race course with the Waypoint display.

StartLine by L-36.com was created out of the desire for a better race start and my frustration with the solutions that were available. StartLine uses the concept of Target Speed (measured and entered during the prestart) to translate distance to the starting line to time, which is what everyone really wants to see. By using target speed the readings are still valid even if you do a loop to kill time and are heading away from the line.

StartLine was developed on the race course with an emphasis placed on low probability of error through simple easy to see and understand menus. Each display has a function and is not cluttered with other tasks.

Large high contrast displays make the StartLine easy to read under adverse lighting conditions.

Enter the starting time and if the race committee uses GPS time (which most do), there is no need to synchronize to any 5 minute gun, although the time is easily synchronized to any start sequence if required.

Ping the ends of the line then look at the distance and direction feedback to make sure it was done right.

Location readings are made more accurate by interpolation between GPS events and velocity correction of location. These combine to give extremely accurate readings of time to the line.

In addition there are eight starting strategies with a readout of the time to the selected start layline. This allows you to get in position minutes before the start so you do not have to kill time and speed at the last minute if you are early. This also gives you plenty of time to make corrections if you are late.

After the start, the waypoint display gives direction and time to the mark as well as boat speed and heading. Times take into account the course and compensate for the tacking or gybing required to get to the mark. The program allows multiple waypoints organized in multiple files in a very flexible format. Selection and editing or waypoint files are included in latest version.

For more information visit L-36.com and click on the StartLine tab

StartLine is available on Google Play. Search for “StartLine” (one word)

Contact: startline (at) L-36.com
Website: L-36.com

Android™ is a registered trademark of Google Inc.
Before I click on it, is this App for sale? If so, are you a paying advertiser here? If not, I will have to delete this thread. Sorry.

Brian
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