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:

The Beagle in Mauritius 2024


And west, forever following the sun, the Beagle went once more to next explore Australia, but since online we already regularly race the length and breadth of that wee dinkum continent’s coasts, we will delay launching our Tall Ship Class B until the Beagle reaches Mauritius, which she did on 29 April 1836. Darwin explored the island and its coral reefs extensively. We’ll better that by sailing some 450nm to Reunion and back, for a better appreciation of this remote archipelago, inhabited mostly by descendants of French and English colonists and Indian convicts and political prisoners.
Race #1757
INFOby brainaid.de
Tall Ship Class B PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SVF - SYC
Race starts: Nov 27th 13:00 Registration will open soon
▶ Flash
GO TO RACE

Kapiti Chetwodes Race 2024


For only the second time in SOL history, we have the pleasure of inviting you to the Kapiti Chetwodes Race, held in the Cook Strait region. Organised IRL by the Royal Port Nicholson Yacht Club from Wellington in New Zealand. The approximately 160nm long route, full of turning points, will take us from the bay at RPNYC around the islands of Somes, Kapiti and Chetwodes and back to the finish line at RPNYC. We have only a 26 ft Albin 79 yacht at our disposal. All this means that we will have a lot of fun, so fair winds!
Race #1864
INFO by brainaid.de
Albin 79 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ4 - ARCH - SUPSOL - SYC
Race starts: Nov 25th 17:00 Registration Open!
▶ Flash
GO TO RACE

Raja Muda Selangor 2024 - Penang to Langkawi

Welcome to the third and last online race of the Raja Muda Selangor International offshore series – a 70nm final trip further north again up the Malacca Strait from Penang to the exotic island of Langkawi, and again in Ker 40s.
Race #1871
INFO by brainaid.de
Ker 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: RMS - SYC
RACE CLOSE: Monday,
November 25 at 2300 UTC.
Race starts: Nov 21st 04:00 Registration Open!

▶ Flash
GO TO RACE

Two Oceans Doublecross TIMED Race 2024

Our November Timed race takes us to Cape Town near where the Atlantic and Indian oceans meet. Our ride is a beautiful ketch, the Archer 78. Starting at Cape Town, we’ll round Robben Island, then head south to round Cape Point, up around Seal Island before heading north to round Dassen Island before returning to Cape Town. This is a TIMED race, so you may RE-REGISTER HERE to try again, after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #1872
INFO by brainaid.de
Archer 78 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ4 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
30 November at 23:00 UTC
Race starts: Nov 17th 12:00 Registration Open!
▶ Flash
GO TO RACE

Nassau to Bodo 2024

Prepare for the grand finale - the 6th and concluding leg of the RTW challenge, an odyssey from Nassau in the Caribbean to Bodø in Norway. Embracing a journey of 4000 nautical miles, this leg promises an exhilarating 18-day voyage. It also heralds the November installment of our prestigious Ocean Race Championship. Embark on a voyage of a lifetime, where prowess, tactics, and camaraderie unite in the pursuit of triumph. We eagerly await your presence at the starting line! May the winds be ever in your favor.
PRIZE: SMPF
Race# 1866
INFO from brainaid.de
Swan 65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ4 - OCCH - RTW - SUPSOL - SYC
Race starts: Nov 11th 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member Vida_Maldita
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member FreyjaUSA
  5. Sailonline Yacht Club Member rafa
  6. Sailonline Yacht Club Member Kipper1258
  7. Sailonline Yacht Club Member CollegeFund
  8. Sailonline Yacht Club Member Sax747
  9. Sailonline Yacht Club Member QMaxx
  10. Sailonline Yacht Club Member BRENTGRAY

View full list

Series

Mobile Client

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

The mobile client