Luxury yacht manufacturer Palmer Johnson Yachts is closing its production facilities in Sturgeon Bay because of dwindling sales and competition from overseas. In a plant closing notice filed Wednesday with the Wisconsin Department of Workforce Development, the company said sales had fallen and offshore competition had escalated. The closures will result in the loss of about 100 jobs. Palmer Johnson said it will cooperate with the Department of Workforce Development to help employees find other jobs. The shutdown will take place in phases starting about Oct. 31. "We are disappointed and saddened by this business closing, and yet realize that there is no alternative," the company said.