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Old 12-01-2017, 18:26   #1
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SAR aircraft icon rotation

The attached screenshot shows an helicopter visible to our AIS units.
As you can see, the course is 123 and the track shows it is heading south east which seems to verify the heading.
However, the icon is showing the aircraft heading north.
As far as I can see, the SAR message (AIS msg 09) doesn't have a gyro field so all it has to work with is the heading field.
Should the icon rotate to follow the course made good?

Also, while I am at it, is there any way to change certain icons to helicopters instead of aircraft? I am tracking about 5 or 6 aircraft that are all helicopters but are all showing up as planes. There is nothing in the message that allows differentiation between planes & choppers so was wondering if there is a way to have custom icons for any AIS targets? I would want to change all SAR messages to helicopters as I do see some real SAR planes around on occasions.

(oh, and this isn't actually a SAR helicopter but the data I am getting from it is a SAR [09] message)
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Old 12-01-2017, 21:42   #2
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Re: SAR aircraft icon rotation

should we start plotting adsb or something as well as ais if available?
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Old 12-01-2017, 22:10   #3
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Re: SAR aircraft icon rotation

Quote:
Originally Posted by boat_alexandra View Post
should we start plotting adsb or something as well as ais if available?
I wouldn't say No. Would be nice to see aircraft as long as you aren't near a busy airport where you might get swamped with signals! Actually my reason to look at OpenCPN is to assess suitability as a generic display for other tracking systems as well as AIS.

But in this case I do have a valid (I hope) AIS signal so am wondering whether message 9 is a special case where the icons aren't rotated. So far I have seen 2 helicopters today and both are facing north while flying south east. Possible, but unlikely and with no gyro information in the string, OpenCPN wouldn't know anyway.
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Old 13-01-2017, 02:42   #4
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Re: SAR aircraft icon rotation

Greetings and welcome aboard the CF, David.
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Old 13-01-2017, 03:01   #5
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Re: SAR aircraft icon rotation

Is there as standard helicopter icon for AIS?
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