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 » dc calculator

For those who may need it.

http://tinyurl.com/2u3op4o

For Windows (works on some Linux systems under Wine). Wrote it this evening after reading some comments on the chat. This is the only manual:

Enter the date and UTC time at which the delayed command is to be executed and press the 'Calculate delay' or 'Enter' button.
Enter the 'Delay' value in the SOL clients dc box, check the mark and hit SEND. Time is calculated from the moment you hit 'Calculate delay', so lower the value slightly to allow for the seconds it takes to enter and send the dc.

Time and date can be entered using numeric keypad with the decimal point key as the hh:mm:ss and dd-mm-yy separator. Also, values can be altered using arrow up and down. Use left and right arrow keys to navigate within the time and date fields. Use tab to navigate between fields and buttons.

Until now untested in time zones out of Europe. Disclaimers apply.

Have fun.
Philip
Philip - this is really excellent! I was a little confused at first because the program opens by showing my computer-clock time but now I know to just ignore that and input the SOL date/time I need, the result is spot on!!

As I said in chat.. you are clever!!

Thank you for creating and sharing this.. I am sure many will find it very useful indeed (even those who now use calculator or pen/paper)!!
Excellent. Thanks very much for this. Works in Southern hemisphere - just have to remember to enter the time value as UTC. Top bloke.
Updated version available at the same link:

http://tinyurl.com/2u3op4o

Have fun.

Philip
Updates faster than you can say "There's Klingons on the starboard bow." The same link still works, even though it is now a zip file:

http://tinyurl.com/2u3op4o

Notes: Polars courtesy of brainaid. Unzip the archive keeping folder structure intact. All polars must be located in a directory called "Polars" and this directory must be a subdirectory of the directory in which the executable is stored.

How to obtain new polars suitable for this tool: Go to

http://sol.brainaid.de

and click on "Toolbox". Select a race in which you have already registered (important) and log in using your boat name and password (or try as sol). Click on the Polar button and on the next page click on "Detailed data as CSV". Save in Polar directory described above and you're good to go.

This version will only show boat speed after selecting a polar and entering true wind speed, direction and course. You can image that a lot more is possible, like vmg and vmc. Maybe next time.

As always, disclaimers apply.

Cheers,
Philip
Hi Philip,

The link doesnt appear to be working anymore. I have an earlier version but cant get into the latest file.

Cheers Undercover
Hi UC,

The link ought to be working again, now. If ot doesn't, just let me know and I'll create another one.

Cheers,
Philip
Schakel - I only use your calculator to work out time for DCs and its been very helpful... I would simply add a rider that the time given by the calculator needs to have 0.010-0.015 deducted before input to SOL to allow for the delay in commands executing in the SOL server!

I used it for my practice race start last night and... after only three attempts got myself a start at 20:00:00 exactly for almost the first time ever hehehe

Cheers Philip all good now :)

Please login to post a reply.

Races

Next Race: 00d 00h 00m


Current Races:

Tall Ships 2026 - Stavanger to Aalborg


Welcome to the fourth of four virtual Tall Ships Races in European waters which are concurrently being organized in-real-life by Sail Training International . This fourth race is from Stavanger in Norway into the Skaggerak to a finish off Denmark’s Aalborg and perhaps an Aquavit to toast the adventure afterwards – a final circa 250nm in Sailonline’s classic Clipper 240.
NOTE: Starts and Finishes in tall ships racing are always offshore to avoid conflict with shipping and shipping lanes; online and real-life may not match exactly.
Race #1995
INFO by brainaid.de
Clipper 240 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: TSI - SUPBUD - SYC
Race starts: Jul 25th 16:00 Registration Open!
▶ Flash
GO TO RACE

Chinook Salmon - Canada to Andreanovs


A year after spawning in the upper reaches of the rivers of British Columbia, Chinook Salmon develop the age-old urge, so familiar to SOLers, to go to sea, heading for different parts of the northern Pacific Ocean. This race catches up with a particular school with an instinctive memory for the Andreanov Islands far west on the Aleutian Islands chain, as they depart the Salian Sea between Vancouver Island and the San Juans. It’s 2200nm and we’re taking the 60ft Trimaran, in the hope we can keep up!
Race #2048
INFOby brainaid.de
60ft Trimaran PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MIG - SYC
Race starts: Jul 21st 11:00 Registration Open!
▶ Flash
GO TO RACE

Juventud TIMED Race 2026

Welcome to Isla de la Juventud (Isle of Youth), Cuba’s second largest island after mainland Cuba. Known as a haven for pirates, the island was the inspiration for novels “Treasure Island” and “Peter Pan”. The circa 120nm course runs clockwise around the island.
This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have two weeks to test your skill and decision making after the race opens.
Race #2049
INFOby brainaid.de
The boat for this race is the sporty Mini 6.5p Foil PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ3 - TRCH - SYC
RACE CLOSE: Saturday,
1 August at 23:00 UTC
Race starts: Jul 19th 12:00 Registration Open!
▶ Flash
GO TO RACE

Alaska to Easter Island 2026

Welcome to yet another all-new series. The initial leg of the RNW (Round the New World), Alaska to Easter Island, also part of our Ocean Championship. The first race of OCQ3 2026. This race will be sailed in our revised 'version 2' Imoca 60 Foil. Race #2042
INFO by brainaid.de
Imoca 60 Foil v2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ3 - RNW - OCCH - SYC
Race starts: Jul 06th 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member KaSToR
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member Panpyc
  5. Sailonline Yacht Club Member cdhinman
  6. Sailonline Yacht Club Member bonknhoot
  7. Sailonline Yacht Club Member rafa
  8. Sailonline Yacht Club Member ms0689
  9. Sailonline Yacht Club Member sassy63
  10. Sailonline Yacht Club Member ita10267

View full list

Series

Mobile Client

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

The mobile client