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Internet AIS Marine Navigation Collision Avoidance in action in CA

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Internet AIS Marine Navigation Collision Avoidance in action in CA

Old 07-23-2013, 09:24 AM
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Thumbs up Internet AIS Marine Navigation Collision Avoidance in action in CA

This was posted on PocketMariner's blog:

"I have now been using Boat Beacon in the southern California waters for the past few months and really enjoy the visibility it provides me. Just this past weekend, my Yacht Club had a large cruise over the 4th in Catalina and in my trip over, I had a cargo ship that, based on Boat Beacon CPA data, going to get really close. I called the ship, by name, on VHF Channel 16 and based on the conversation, he changed course, which again we had a conversation with him telling me what he had planned to do etc."
Old 07-23-2013, 11:04 AM
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That's cool. I didn't know you could transmit using computers. My thought is that there is no reason why this should only be limited to VHF radios. An app that anyone can use to transmit their location and speed would enable far more boats to participate in the system.

Here is a nice online system for viewing if folks have not seen before: http://www.marinetraffic.com/ais/

Using this on a phone and close to shore one could get pretty good idea of what is out there as far as commercial traffic without AIS on the ship system. They also have apps for iPhone and Android. But since they cost money and I am too cheap , I just use my browser on my phone. Here is a snapshot of the phone app:

Old 07-23-2013, 01:10 PM
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Originally Posted by amirm View Post
That's cool. I didn't know you could transmit using computers. My thought is that there is no reason why this should only be limited to VHF radios. An app that anyone can use to transmit their location and speed would enable far more boats to participate in the system.
The apps only transmit to websites. Someone running the app would not show up on an AIS receiver unless that receiver got its information from the Internet rather than AIS signals. The apps do allow you to see vessels with AIS transceivers that the apps maker's towers pick up.
Old 07-23-2013, 01:21 PM
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Originally Posted by kdoel View Post
This was posted on PocketMariner's blog:

"I have now been using Boat Beacon in the southern California waters for the past few months and really enjoy the visibility it provides me. Just this past weekend, my Yacht Club had a large cruise over the 4th in Catalina and in my trip over, I had a cargo ship that, based on Boat Beacon CPA data, going to get really close. I called the ship, by name, on VHF Channel 16 and based on the conversation, he changed course, which again we had a conversation with him telling me what he had planned to do etc."
AIS data also includes the vessel's MMSI number, which you can use to place a DSC call. In my experience, commercial vessels generally, but especially freighters, are more responsive to DSC calls. One time the Navy tried hailing a cruise ship on 16 and took about 10 minutes to get an answer, even though they were hailing by name. The navy had the cruise ship change course. When that ship had stopped turning (its Rate Of Turn dropped to 0, per AIS), my AIS indicated that we were then on a collision course. Instead of spending 10 minutes hailing, I made a DSC call and got an immediate reply, and easily worked out our passing.

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