Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » DCs & The SOL Clock

Six Easy Pieces
The arcane chronometry of SOL
(with thanks to Richard P Feynman)
1. All commands, whether entered via sailonline.org or sol.brainaid.ie or the Zappe android app – delayed as well as immediate (but never the less slightly delayed) – are executed via the DC Editor.
2. There is full synchronicity between the DC Editors seen on sailonline.org, on sol.brainaid.ie and on the Zappe android app. You are looking at the same thing in each case.
3. The commands execute at the NET Times registered in the DC editor; always.
4. If you are using the hh:mm:ss clock on your pc to check and count time, this clock may be out of sync with NET Time; go to http://www.timesynctool.com/ to find out how to remedy this.
5. Only the commands entered (or corrected) via sol.brainaid.de are always WYSIWYG; the commands entered (or corrected) via sailonline.org generally are, but not always; the commands entered via the Zappe app never are.
6. These discrepancies can change from session to session, but are constant during a session; establish what it is, do the maths and enter an adjusted time to get the time you want.
Clipping along
In the chat on this subject, here is what I posted:

Kip: Getting the PC synched with internet time is step #1. Once I have that, I'll bring up a clock on my PC that displays hh:mm:ss and watch the minute turn over on both the PC clock and the SOL client.

I want the PC clock and the SOL client to turn over on the minute with a second or three of each other.

If they are not together, it's time to re-synch the PC time and reload the SOL client.

Once the time is within 'tolereance' levels, I'll use the 'delay for' dot on the predictor line and bracket the point at which I want to turn -- that is, set 2 DCs ... one early and one late.

Then, bracket again at a different 'delay for' setting. By refreshing the DC tab in the SOL client, you can see the different 'early' and 'late' times generated by following the orange dot.

But THEN, I go with Dingo's approach. I'll pick a DC time from the list of 'late' DCs that I can use as a backup if I don't make it to the PC for the rounding. But if I really care, I'll get up and stay hands-on.
A key point that I did NOT make clear in the chat is that setting three or more early/late DC pairs are needed to start seeing a pattern for a particular rounding.

That is, I'll set an early/late pair for {let's say} 40 minutes out, for 38 minutes out, and for 36 minutes out ... then go to the DC tab in the SOL client, refresh, and look at the early/late pattern. If the pattern looks good, I'll pick a time from the 'late' column and set the DC. If the pattern still looks random, I'll set some more early/late pairs and try again.

But this is just to get a 'safe' DC -- one that will allow me to get another 30 minutes sleep. It won't get me around a mark or past a headland as quickly as hand-sailing would.

--- Last Edited by javakeda at 2015-07-30 11:13:12 ---

Please login to post a reply.

Races

Next Race: 00d 00h 00m


Current Races:

Java Sea Race 2022
For our penultimate Seven Seas of Asia race, we invite you to venture yet further south – to the Java Sea for a hydration-challenging circa 2200nm race Jakarta to Semarang via Selayar and Belitung, in cracking kinetic Ker 40s. Water-makers will again be mandatory!
Race #1545
INFOby brainaid.de
Ker 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - SSA
Race starts: Aug 20th 06:00 Registration will open soon

▶ Flash
GO TO RACE

Victoria to Maui 2022
The Victoria to Maui International Yacht Race, first contested in 1968, is the pinnacle of Pacific Northwest ocean racing, running every two years. This year, Sailonline invites the SOL fleet to race the 2300nm course in Delphia 47s, from Victoria, British Columbia to Hawaii, finishing off Lahaina Maui.
PRIZE: SMPF
Race #1596
INFOby brainaid.de
Delphia 47 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ3-OCCH-SUPSOL-SYC
Race starts: Aug 09th 19:00 Registration Open!

▶ Flash
GO TO RACE

Brisbane to Hamilton Island Yacht Race 2022


Time once again to head for the warm waters inside The Great Barrier Reef, but this year not only online but together with our buddies at the Royal Queensland Yacht Squadron and their friends from across the world, in the iconic Brisbane to Hamo! Online we’re racing maxi’s to give you a chance to cover the 550 glorious blue water nautical miles in a time to best some of the fastest monohulls on the planet including Andoo Comanche, Black Jack and Hamilton Island Wild Oats . Fair winds, all!
Race #1606
INFOfrom brainaid.de
Super Maxi 100 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
RACE CLOSE: Sunday,
August 14 at 2300 UTC.
Race starts: Aug 05th 01:00 Registration Closed
▶ Flash
GO TO RACE

Sailonline’s 15th Birthday Balloon Race
Sailonline offers a huge variety of boats to sail in. One of the more unusual ones has got to be SOL's Balloon, which was polarized by past SOLmaster 76Trombones. Notably, the SOL Balloon will actually ‘sail’ in other directions other than straight downwind, although it will not 'sail' over land or beyond a 'beam reach'. Like in 2013 and 2018, we will be taking the Balloon across the Atlantic from St. John's and 'land' it in the sea off the Cliffs of Moher.
Race #1605
INFO by brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
None
Race starts: Aug 01st 19:00 Registration Open!

▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member Pit8008
  3. Sailonline Yacht Club Member rafa
  4. Sailonline Yacht Club Member FreyjaUSA
  5. Sailonline Yacht Club Member Vida_Maldita
  6. Sailonline Yacht Club Member GREATSKUA
  7. Sailonline Yacht Club Member Satori
  8. Sailonline Yacht Club Member Sax747
  9. Sailonline Yacht Club Member Kipper1258
  10. Sailonline Yacht Club Member HappyHour

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client