Sydney To Hobart 2018

trt131

Super Anarchist
1,618
328
Jack, I am not sure why AIS does not show all boats on  the commercial apps.  If you look at the fleet over the whole race I suspect there were about 25% that did not show at all and another 50% that dropped in and out at various time.

 

Mid

Blues Rule
ho hum , what have we here .....................

2
FAIR SAILING
 ​



A boat and her owner shall compete in compliance with recognized principles of sportsmanship and fair play. A boat may be penalized under this rule only if it is clearly established that these principles have been violated. The penalty shall be either disqualification or disqualification that is not excludable.

 

resist

Member
134
35
WOX to pip Alive, great stuff

Voodoo is looking in a pretty good spot if they stay in the breeze for the next hour or two. they’re sailing a bloody good race 

 

paps49

Super Anarchist
8,944
318
Adelaide Australia
Still there for me
Yes, seems to be just on the LO page but not IRC.

Scally.JPG

 

jack_sparrow

Super Anarchist
37,393
5,094
Jack, I am not sure why AIS does not show all boats on  the commercial apps.  If you look at the fleet over the whole race I suspect there were about 25% that did not show at all and another 50% that dropped in and out at various time.
To explain AIS recieve differences. Firstly they will all have Class B Transceivers which are are lower powered and give priority to Class A transceivers on commercial vessels. Secondly most will share the same VHF antenna via a splitter and it will be mast mounted to comply with rules. However the most common fault with AIS and VHF transmission power is the coax cable to the antenna where moisture has entered via connections. The latter is the most common cause for AIS drop outs in correctly installed setups.

The commercial AIS apps all use a vast number of different sources for AIS positions terrestrial, marine and low orbit satellites. So there is no where a boat with a fully functioning AIS operating at full power can hide.

 
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jack_sparrow

Super Anarchist
37,393
5,094
WOX to pip Alive, great stuff

Voodoo is looking in a pretty good spot if they stay in the breeze for the next hour or two. they’re sailing a bloody good race 
WOX gives Alive time. In fact Ichi has displaced WOX from #2 spot. Voodoo at #4 could improve if someone stumbles. Alive only got 12 minutes up her sleeve over Ichi at the moment based on DTG and spot SOG's.

 
Last edited by a moderator:

trt131

Super Anarchist
1,618
328
To explain AIS recieve differences. Firstly they will all have Class B Transceivers which are are lower powered and give priority to Class A transceivers on commercial vessels. Secondly most will share the same VHF antenna via a splitter and it will be mast mounted to comply with rules. However the most common fault with AIS and VHF transmission power is the coax cable to the antenna where moisture has entered via connections. The latter is the most common cause for AIS drop outs in correctly installed setups.

The commercial AIS apps all use a vast number of different sources for AIS positions terrestrial, marine and low orbit satellites. So there is no where a boat with a fully functioning AIS operating at full power can hide.
Jack, thanks for the explanation.

 

Cal20sailor

Super Anarchist
13,358
3,681
Detroit
I do have to say that in my very humble opinion, the start coverage was phenomenal, and the comments and tracking of boats as they made their way was second to none.  Thank you Australia yachting for reminding me that this race is the showcase event annually.  Incredibly entertaining.  

 


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