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:

Manilla to Calbayog 2024

After six years, we welcome you to the race created by sassy63 for the second time. He takes us to the Philippines to race around islands on a 380 nm course. We sail the Italia 14.98 and in Calbayog we'll enjoy our well-deserved Palatan dish and drink it with San Miguel.
Race #1803
INFO from brainaid.de
Italia 14.98 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ2 - ARCH - SUPSOL - SYC
Race starts: Apr 22nd 17:00 Registration will open soon
▶ Flash
GO TO RACE

Jakob's Birthday BBQ Race 2024


Sailonline had two founders and Jakob, the more senior of the two, has his birthday in April which we always like to celebrate with a race through the Stockholm Archipelago from Revengegrundet Lighthouse to his mooring at Baggensfjärden. Traditionally also, like other celebrations this time of year, this feast has been “moveable”, so on this occasion we will be racing on a Wednesday in one of our latest high-performance 40-footers, the Carkeek 40. Please join us then for this always tricky 30nm race. Grattis på födelsedagen Jakob!
Race #1794
INFO by brainaid.de
Carkeek 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 20th 14:00 Registration Open!
▶ Flash
GO TO RACE

Melbourne to Osaka Prelude 2024

Welcome once again to what these days is Sailonline’s almost annual virtual Melbourne to Osaka Yacht Race. In real life, this double-handed 5500 nm race between these two sister cities, one deep in the southern hemisphere, the other high in the northern hemisphere, is run every four to five years, and is planned to be held again in 2025, so this race is a Prelude in partnership with the Melbourne Osaka Cup 2025 organising committee collaborating with the Ocean Racing Club of Victoria (ORCV), and the Sandringham (SYC) and Osaka Hokko (OHYC) yacht clubs. On this occasion, we’ll be racing the well-known First 40, a popular size of boat for a long-distance double-handed race. With the doldrums unavoidably lying across the track, you can expect to be at virtual sea for at least a month!
Race #1669
INFO by brainaid.de
First 40 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 20th 00:00 Registration Open!
▶ Flash
GO TO RACE

St Nazaire Chasse TIMED Race 2024

Welcome to a "chasse" (hunt) from St. Nazaire to La Baule on the west coast of France! This race was designed by SOLer FR_flouflou in 2010. The KER 40 was introduced to SOL in 2016 by SOLer psail, and the Sol-KER was a welcome addition to SOL’s fleet of 40- footers, as it was to the IRL Ker fleet of eponymous - like KERonimo, KukuKERchu and Ice BreaKER. This is a TIMEDrace, so you may RE-REGISTER HERE to try again, after finishing a run. You will have 13 days and 11 hours to show your skill and decision making after the race opens.
Race #1797
INFOby brainaid.de
Ker 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ2 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
27 April at 23:00 UTC
Race starts: Apr 14th 12:00 Registration Open!
▶ Flash
GO TO RACE

The Beagle in the Straits of Magellan 2024


Both before and after visiting the Falkland Islands, the Beagle extensively explored the south eastern coast of South America, hither and thither, from north of the Rio Plate to the tip of Tierra del Fuego, but it was not till the end of June 1834 that the ship made it into the Pacific Ocean, transiting via the Straits of Magellan. Online in 2024, the choice is yours - passage the strait or round the cape; 400nm or more in your Class B Tall Ship.
Race #1753
INFOby brainaid.de
Tall Ship Class B PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SVF - SYC
RACE CLOSE: Sunday,
April 21 at 2300 UTC.
Race starts: Apr 09th 13:00 Registration Closed
▶ Flash
GO TO RACE

Cape Town to Auckland 2024


Welcome to the second leg of this Round The World series 2024. It's also the April edition of this year's ocean race championship. The course is the same as the one sailed in 2023, but this year we sail the iconic Swan 65, as suggested in the concluding RTW race last year.
Prepare yourselves for an epic 30-day journey, navigating through the unpredictable waters of the South Seas. It's essential to take care of provisioning to ensure a smooth and enjoyable race experience. With the longer duration, we anticipate plenty of opportunities for camaraderie, competition, and unforgettable memories.
PRIZE: SMPF
Race# 1789
INFO from brainaid.de
Swan 65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - RTW - OCCH - SUPSOL - SYC
Race starts: Apr 01st 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 Pit8008
  3. Sailonline Yacht Club Member FreyjaUSA
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member sassy63
  6. Sailonline Yacht Club Member bonknhoot
  7. Sailonline Yacht Club Member Sax747
  8. Sailonline Yacht Club Member Vida_Maldita
  9. Sailonline Yacht Club Member wsguerin
  10. Sailonline Yacht Club Member CriticalHippo

View full list

Series

Mobile Client

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

The mobile client