WISCASSET – About 30 lobster boats paraded by this coastal town Thursday as fishermen showed their opposition to plans for a new power plant that would be built at the site of the former Maine Yankee nuclear site.

About 120 people on the shore held up signs supporting the lobstermen as the boats sailed by on the Sheepscot River. One of the signs said, “Say No to Coal.”

The $1.5 billion plant would burn gas extracted from coal. Promoters say it would produce up to 700 megawatts of electricity and thousands of barrels a day of diesel fuel.

But lobstermen say the Sheepscot River fishery would be threatened by coal barge traffic. They say the Sheepscot fishery pumps millions of dollars a year into the midcoast economy.