I’ve got marinetraffic.com on my android, works great and covers all the way up to Alert Bay in BC.
You can also go to sailwx.info, but I think they are primarily Puget Sound.
Here’s one for Central California: http://www.cencoos.org/sections/ais/aismap.shtml
Sorry, I’m a little left coast oriented…
And, this just in, I just found this clearinghouse of AIS sites.