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 » General Discussion » Polar for First 40.7

Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-07-16 14:09:12 - Polar for First 40.7
Our current polar doesn't really do this boat justice. I've attached an update based on Farr's own / IMS VPP.

Pretty similar from 0-20 kts. It's a tiny bit faster but the main difference is the addition of wind curves out to 30 kts TWS and better(?) data between 150 and 180 TWA.



Comments? Good/Bad idea?
Attachments
Posted by
Exmeromotu


Users avatar

Posts
71
Registered at
2008-12-10 15:22:17
2010-07-16 14:34:13 - Re: Polar for First 40.7
I say aye!

Anything that makes this "simulation" more like IRL is good. Nice work 76T!

Regards
Posted by
NZL_undercover


Users avatar

Posts
65
Registered at
2009-07-31 03:29:32
2010-07-17 11:01:33 - Re: Polar for First 40.7
Hi Guys

The First 40.7 is now an old model.....
The new Farr boat is a First 40 so newer and faster. First 40.7 I think is a 2004ish design or earlier.

Cheers Undercover
Posted by
sol


Users avatar

Posts
300
Registered at
2008-08-14 11:08:14
2010-07-17 14:42:33 - Re: Polar for First 40.7
Good point. I think one of the reasons that the First 40.7 is a popular boat for some of the local races is that lots of people have sailed on or against them? It's been requested for a couple of upcoming races.

Here's a polar for the new model if anyone wants to use it in their races:

76T
Attachments
Posted by
BER_Baggus


Users avatar

Posts
70
Registered at
2008-12-26 18:46:10
2010-07-22 13:58:09 - Re: Polar for First 40.7
Can I ask a general polar question? On SoL, we are looking at the True Wind angle on the polar diagrams. On the copy I have for one of the boats I sail on (Lindenberg 28), it refers to the apparent wind angle.

Whcih should I be taking more notice of?
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2010-07-22 14:23:04 - Re: Polar for First 40.7
SOL Polars are representative for the TWS given in the game. There is no need or distinction for Apparent Wind formulation. Another way to look at it is the compensation is built into the Polars as given.
None so blind
Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-07-22 16:51:22 - Re: Polar for First 40.7
Right.

For real boats, use the TW polars for navigation and (optionally) the AW ones for picking tacking angles based on onboard instrumentation. (unless you have modern fancy integrated insruments)

Target speeds can often be a better/easier way to maximise performance:

http://www.sailingworld.com/experts/get-your-performance-on-target

http://www.ockam.com/functarg.html
Posted by
Svein


Users avatar

Posts
84
Registered at
2009-05-04 15:09:20
2010-08-04 14:18:42 - Re: Polar for First 40.7
OK, so which polar is used in SOL races?

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Silverrudder 2026


Ahoy, SOLers! Welcome to the 2026 edition of the Silver Rudder – Challenge of the Sea! This epic 125nm single-handed race around Denmark’s island of Funen is back!

Shallow waters and shifting winds await in the world’s largest solo regatta. This year, we return to the popular First 27 solo. This superlight, water-ballasted planing machine features twin rudders and weighs a full tonne lighter than her older stepsisters. Will you master her power where precision counts most?!

It is imperative that you read AND understand these special Starting Conditions for SILVERRUDDER 2026:
Starting Conditions!!

Race #2059
INFO by brainaid.de
First 27 Solo PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - SUPBUD - RED
Race starts: Sep 18th 08:30 Registration Open!
▶ Flash
GO TO RACE

Isle of Mull TIMED Race 2026

Welcome to the west coast of Scotland for an 80 nm race around the Isle of Mull. Mull is home to castles, distilleries, and the Highland Games. The race begins just north of Oban in the shadow of Dunstaffnage Castle and after rounding the island finishes down the coast at Crinan. The Twister 28 with its classic long keel is the boat for this race.
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 #2057
INFOby brainaid.de
PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ3 - TRCH - SYC
RACE CLOSE: Saturday,
26 September at 23:00 UTC
Race starts: Sep 13th 12:00 Registration Open!
▶ Flash
GO TO RACE

Cross the Convergence 2026 - Cocos to Sagar Island


Kapil Muni, incarnation of Lord Vishnu, founder of the Samkhya school of philosophy, disturbed from his meditation, in his wrath reduced the 60,000 sons of Sagar to ashes, as they dug the earth to retrieve the sacrificial horse that Lord Indra, the king of the Gods, stole off Sagar, thus creating the Sagara (ocean). Aeons later, Bhagiratha, a descendant of Sagara, asked Ganga to cleanse the ashes of the 60,000 princes, and her resultant torrential fall from heaven created the great river and where it met the ocean, the princes’ souls were washed and raised to heaven and Gangasagar (Sagar Island) was formed. So, let us join the pilgrimages to Kapi Muni’s Temple (see above) and race 2400nm from Cocos Island deep in the Sagara thence, in rather rapid Rapido 60s.
Race #1987
INFOby brainaid.de
Rapido 60PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
Race starts: Sep 11th 18:00 Registration Open!
▶ Flash
GO TO RACE

Shearwater - Rio de la Plata to Irish Sea 2026

Welcome to the fourth leg of our MIG series. This time we're racing the Sooty Shearwater on their migration from the breeding grounds in South America to the northern Atlantic. This is also part of our Ocean Championship, and as such the third race of OCQ3 2026. This race will be sailed in our Gunboat 90. Race #2055
INFO by brainaid.de
GunBoat 90 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ3 - OCCH - SYC - MIG
Race starts: Sep 02nd 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member CriticalHippo
  2. Sailonline Yacht Club Member KaSToR
  3. Sailonline Yacht Club Member WRmirekd
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member Panpyc
  6. Sailonline Yacht Club Member cdhinman
  7. Sailonline Yacht Club Member rthinman
  8. Sailonline Yacht Club Member BRENTGRAY
  9. Sailonline Yacht Club Member Sax747
  10. Sailonline Yacht Club Member vida

View full list

Series

Mobile Client

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

The mobile client