Directory of port towns on the west coast of the US?

[dav]

This may be asking for a but much, but my wife and I are considering moving away from San Francisco and to a smaller town along the west coast of the US (we're mostly interested in heading north). We want to be in a harbor town as I intend to buy a large enough boat to live aboard for some time, but if we find a place we like we'd likely find an abode on land eventually.

I could just start looking at the map and doing Internet searches on each town, but it would be nice if there was an online directory of all the west coast harbors to browse through so figured I'd just ask first to see if anyone knows a good place to start with this research project.

Thanks!