AIS Collision Avoidance Alarm Query

[CapnLex]

Dear All

My question is this; does Open CPN AIS collision avoidance alarm still work outside the perimeters of your paid for charts? For example if you were to sail across the Atlantic and have bought charts for local regions on either side yet have a gap in between, would Open CPN still work? More importantly would the AIS alarms still work? I thank you in advance for your responses.

Alex

[bcn]

Yes.


If you want to try it out: take the VDR plug-in and record some AIS traffic that gives you alerts.
Disable all your charts (or the charts for the place you want to test at) and play the VDR file back.

[CapnLex]

Thats great news and a good idea thank you, not sure why it hadn't occured to me but hey ho I will give it a go.Cheers!

[requiem]

Just to add, AIS should* have nothing to do with charts; it's simply taking two positions (you and the other guy) and seeing if your respective motion vectors result in passing too close.

*I say "should" because you never know if some company will decide to tie the two in order to "force" more subscriptions, but functionally charts are irrelevant to AIS.

[Time2Go]

Interesting question, Not on the boat
for a few weeks but I send AIS data over
wifi to my Ipad. Running TZiBoat and
INavX, no problem but the screen can
get crowded. I plan on using a
program “AIS Radar “ which gives you
just AIS data. Could be a good fit for you
as it mimics a radar screen but with AIS
targets.
Cheers
Neil

[Time2Go]

AIS Radar screen grab

[fourlyons]

Originally Posted by Time2Go

Interesting question, Not on the boat
for a few weeks but I send AIS data over
wifi to my Ipad. Running TZiBoat and
INavX, no problem but the screen can
get crowded. I plan on using a
program “AIS Radar “ which gives you
just AIS data. Could be a good fit for you
as it mimics a radar screen but with AIS
targets.
Cheers
Neil

Neil that looks interesting, do you run this program on a second tablet, or in a different window or tab on the same tablet you run the nav program on?

[skipperearly]

Originally Posted by fourlyons

Neil that looks interesting, do you run this program on a second tablet, or in a different window or tab on the same tablet you run the nav program on?

Is this the AISradar.pi running independently of opencpn? How is the pi started?

[Time2Go]

Originally Posted by fourlyons

Neil that looks interesting, do you run this program on a second tablet, or in a different window or tab on the same tablet you run the nav program on?

Sorry, I should have been more clear
I have not used this program yet as I am not on the boat
presently but will be in a few weeks.
The plan is to use a separate device/screen for AIS
display. I find overlaying AIS on the plotter gets it too
crowded.
I found AIS Radar because I like the clarity
of a simple display similar to the
Vesper “Watchmate” and the
DigitalYacht “iAIS”
When I’m looking at AIS data, I don’t really want to
filter away info in my brain.
I’ll report back to this thread when I’ve
had a chance to use it.
In regards to the OP, when i’m offshore I have a tendency
to turn the plotter off. I’m a big fan of dedicated
single function displays and usually just have the
wind instrument on. However it’s nice to know that you’re not on a collision course with the big mother that just appeared on the horizon.
Some MFD get so crowded
it hurts my eyes.
A lifetime ago when learning how to fly
we did an instrument scan looking at the pointers
(Analog) One could tell by looking at the
gauges 10,10,12,12, o’clock everything is OK
Interested in other opinions????
Cheers
Neil

[CapnLex]

Originally Posted by Time2Go

Interesting question, Not on the boat
for a few weeks but I send AIS data over
wifi to my Ipad. Running TZiBoat and
INavX, no problem but the screen can
get crowded. I plan on using a
program “AIS Radar “ which gives you
just AIS data. Could be a good fit for you
as it mimics a radar screen but with AIS
targets.
Cheers
Neil

Much appreciated Neil thank you. I am on the hunt for a new tablet and like yourself enjoy a dedicated screen for specific information so this app suits perfectly. I wonder if anyone could recommend a similar app for an android device as it seems AIS Radar is for IOS devices only, for now at least. Thank you all for your input.

Alex