Two more test positive on cruise ship American Constellation Posted by Joe Viechnicki | Jul 9, 2021 The American Constellation docked in Haines on Saturday June 12. (Corinne Smith/KHNS) Two more people including one crew member on a small cruise ship docking in Petersburg have tested positive for COVID-19. That makes three positive cases on the American Constellation, which moored in Petersburg this week. Petersburg Medical Center reported the first COVID case with an out-of-state visitor on Thursday, July 8 th. Then on Friday, PMC reported two more onboard that ship have tested positive. All three disembarked in Petersburg and are isolating. The company that owns that ship, American Cruise Lines, has left a representative in Petersburg to assist the three. According to a statement from the company, two of the three positive cases are in people who are fully vaccinated.