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Manual

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Diff Summary
Title
Date 2007-12-20 07:59:57 2007-12-20 08:00:39
Editor jakob jakob
Tags

2007-12-20 07:59:57 by jakob
2007-12-20 08:00:39 by jakob
25----------25----------
26The basic way of steering is to either set at cons26The basic way of steering is to either set at cons
>tant compass course (CC) which simply means that t>tant compass course (CC) which simply means that t
>he boat will go in a "straight line". The other st>he boat will go in a "straight line". The other st
>eering mode is to set up the boat to keep a consta>eering mode is to set up the boat to keep a consta
>nt angle to the wind, to keep the true-wind-angle >nt angle to the wind, to keep the true-wind-angle 
>(TWA) constant. This means that if the wind change>(TWA) constant. This means that if the wind change
>s in direction, the boat will change its heading t>s in direction, the boat will change its heading t
>o maintain the wanted TWA. You can set any TWA in >o maintain the wanted TWA. You can set any TWA in 
>the range from 0 to 180 degrees where TWA=0 means >the range from 0 to 180 degrees where TWA=0 means 
>that the wind comes from straight ahead, TWA=180 m>that the wind comes from straight ahead, TWA=180 m
>eans that the wind comes from behind and TWA=90 me>eans that the wind comes from behind and TWA=90 me
>ans the wind in from starboard side. Negative TWA >ans the wind in from starboard side. Negative TWA 
>means wind in from port side (port=left). You can >means wind in from port side (port=left). You can 
>choose to steer directly or to delay the effects o>choose to steer directly or to delay the effects o
>f a command by the use of delayed commands. You si>f a command by the use of delayed commands. You si
>mply set up the steering as described above and th>mply set up the steering as described above and th
>en state how many hours the command should be dela>en state how many hours the command should be dela
>yed. Delayed commands is a neat feature that lets >yed. Delayed commands is a neat feature that lets 
>you attend business meetings and wedding dinners w>you attend business meetings and wedding dinners w
>hile helming a 60-foot single handed catamaran in >hile helming a 60-foot single handed catamaran in 
>a full gale! >a full gale! 
2727
28The chart and the race bounds28The chart and the race bounds
29-------------------------------29-------------------------------
t30The shorelines are supplied by the US National Geot30The shorelines are supplied by the US National Geo
>physical Data Center (NGDC). Resolution may vary d>physical Data Center (NGDC). Resolution may vary d
>epedending on the race type. Important to notice i>epedending on the race type. Important to notice i
>s that what you see is what there is. Be aware of >s that what you see is what there is. Be aware of 
>small islands but all water is deep and sailable. >small islands but all water is deep and sailable. 
>Your boat can naturally only sail on water. If you>Your boat can naturally only sail on water. If you
> collide with land the boat will stop, be pulled o> collide with land the boat will stop, be pulled o
>ut from the coastline some distance and be somewha>ut from the coastline some distance and be somewha
>t damaged. The damage is expressed as a certain dr>t damaged. The damage is expressed as a certain dr
>op in boat speed (performance). This loss in perfo>op in boat speed (performance). This loss in perfo
>rmance is temporary and will vanish in a number of>rmance is temporary and will vanish in a number of
> hours. Since the boat has stopped you need to sen> hours. Since the boat has stopped you need to sen
>d a new command to set the boat on a new course. D>d a new command to set the boat on a new course. D
>ue to the implementation on the server, a boat may>ue to the implementation on the server, a boat may
> actually cut a little land corner at special occa> actually cut a little land corner at special occa
>sions. It can happen to all boats but is nothing t>sions. It can happen to all boats but is nothing t
>o calculate on.  >o calculate on.
3131
32The boat performance curves32The boat performance curves
33----------------------------33----------------------------
34The boat performance is expressed in the so called34The boat performance is expressed in the so called
> polar curve, which is visible to you. The polar c> polar curve, which is visible to you. The polar c
>urve state the boat speed as a function of wind sp>urve state the boat speed as a function of wind sp
>eed and TWA. Take time and study the plot to learn>eed and TWA. Take time and study the plot to learn
> how to sail the boat efficiently. Different wind > how to sail the boat efficiently. Different wind 
>speeds are shown with different colored curves. Fo>speeds are shown with different colored curves. Fo
>r a certain wind speed follow the corresponding co>r a certain wind speed follow the corresponding co
>lored curve for all various TWA:s around the boat.>lored curve for all various TWA:s around the boat.
> For a certain wind speed and TWA you can read the> For a certain wind speed and TWA you can read the
> corresponding boat speed as represented by the di> corresponding boat speed as represented by the di
>stance from the origin to the colored curve. The p>stance from the origin to the colored curve. The p
>lot does not differ negative from positive TWAs si>lot does not differ negative from positive TWAs si
>nce our boats are symmetric. Your boat gets the po>nce our boats are symmetric. Your boat gets the po
>lar curve boat speed (=100% performance in the pol>lar curve boat speed (=100% performance in the pol
>ar window) at all times unless you have hit land a>ar window) at all times unless you have hit land a
>nd your boat has some level of damage.>nd your boat has some level of damage.
3535

Races

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Current Races:

Great Bear Ice Race 2025


You can fly to Great Bear Lake Airport, but if the ice is good, instead hire a pick-up truck, load your disassembled DN into the cargo bed and drive, first following the McKenzie River north, and then straight across the lake to the start of our final Ice Boat series race of roughly 100nm in length. The Airport authorities have agreed to leave all lights on, so you should just about be able to see where you are going as you zing and rumble, PL-free over the ice!
Race #1853
INFOby brainaid.de
DN PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: DN - SYC
Race starts: Dec 07th 09:00 Registration will open soon
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Chile Islands RTI Sprint 2025


Across the Canal Puyuhuapi from Puerto Cines on the Chilean mainland lies the Parque Nacional Isla Magdelena, and further west across the Canal Moraleda from Magdelena lie the islands of the Chonos Archipelago. Returning for the first time since 2017 we find ourselves in vari-charted waters here, with the mapping between physical islands and their names not 1:1 but rather some:some. It’s only 26nm but you could get lost! Good luck.
Race 1980
INFO by brainaid.de
First 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SPQ4 - SPRCH - SUPSOL – SYC
Race starts: Dec 06th 21:00 Registration will open soon
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Christmas to Christmas Island 2025

Two waypoints, start and finish, and between them 5827 NM of two oceans. Not much time if we want to sit at the Christmas Eve table. You will need to maintain an average speed of over 10 knots, maybe quite possible with this Maxi Trimaran, but prepare your vessel well and choose the best of the many possible routes. Hands up everyone who knew there were TWO Christmas Islands?! OK, maybe you have sailed this Sailonline course before... but it's time to get ready for the 2025 challenge of racing between Christmas Island in the Pacific to Christmas Island in the Indian Ocean! It also marks the conclusion of our prestigious Ocean Race Championship 2025. Please have fun! Fair winds!
PRIZE: SMPF
Race #1967
INFO by brainaid.de
Maxi Trimaran PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ4 - OCCH - SUPSOL - SYC
Race starts: Dec 01st 11:00 Registration Open!
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Sinbad by Balloon 2025 - Carnarvon to Dondra


From here, our home in Bharatavarṣa is now north west of us – said Sinbad to his fellow balloonists. Perhaps we can ride the wind first further north, and then catch the winds that every year bring the rain, perhaps not. It’s 2600nm and we could be aloft awhile, so, Master el-Quarters, victuals only, no sandbags, provisioning the giant hamper. It will be not a picnic!
Race #1886
INFOby brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - SBB
RACE CLOSE: Tuesday,
December 9 at 2300 UTC.
Race starts: Oct 15th 11:00 Registration Closed
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