I meant "What did you think your AIS was going to do for you?" It sounds like we are in general agreement though. Do you have a transponder, or a receive-only unit?
Yes, that ship seems to have been steered by a moron. It happens. We both already knew that.
Here is my personal philosophy on AIS:
I like it. It is a piloting aid, and it alerts me to the presence of most large vessels before they come into my visual or radar horizon. It helps my situational awareness. I know full well that it will not warn me about most small craft, some large craft, floating debris, etc.
I started out with a receive-only unit, and recently switched to a Class-B transponder on the basis that since I appreciate other vessels transmitting their AIS data, perhaps some of these other vessels would appreciate it if I transmitted too. It's kind of like radar (in some ways). If we all just had detectors (or reflectors), and nobody ever transmitted, the system wouldn't work too well for collision
Just because I'm transmitting AIS doesn't mean that the other vessel will react appropriately. I usually assume they're asleep on the bridge (I realize that in most cases they are being quite diligent).