Greg - that is a typo. She has a 22' C-dory. You can see it in the photo in this
NY Times article.
I organized a freshman seminar course this spring and had Dr. James Winton speak in it. He's quoted in the article you posted. From a microbiology perspective, one of the biggest concerns about fish farms is that in addition to potentially infecting wild fish that pass by, the environment of a fish farm is ideal for the creation of more virulent bacteria and viruses. In nature, the fish are generally much less concentrated and it's very bad from the virus's or bacteria's standpoint to kill off the host (salmon) prior to getting passed on to another host. In a fish farm, there's constant contact with other fish and there's no evolutionary pressure or "cost" for a pathogen to kill off the host more quickly. A new supply of fry will soon be added. This is the ideal conditions for highly virulent strains to develop.
At some point, I fear that the unnatural evolution of bacteria and viruses that can take place in a fish farm will allow the transfer of highly virulent pathogens to our wild fish and we'll get massive kill offs. For all we know, this could be what has happened already with Frazer River sockeye. We have essentially no data on how the viruses that have been involved in recent outbreaks are evolving in these fish farms as no large scale sequencing is being done over time.
I'm all for the idea of aquaculture but we need to do it in such a way that the aquaculture fish are segregated from wild fish. The Canadian/BC approach in which the fish farms are concentrated near the terminal areas for the spawning wild fish has got to be the most insane place to put these operations.
Finally, there are other potential issues with net pen farming. The pens frequently are breached and there are massive releases of non-native salmon into the local environment. While the Atlantic salmon are created to be mostly sterile, the technology that does that is not 100% effective. Hence another fear is that we wind up introducing viable non-native species to our coasts through these fish farms.
Like Roger, I ask before I order any salmon in any restaurant and I refuse to eat farmed salmon. For home consumption, I catch all my own. I also try to encourage my friends to avoid farmed salmon.