The federal government has extended its closure of the border for non-essential travel monthly over the past year, the latest to March 21. This month, Ottawa cancelled the entire cruise season, banning big ships from May until October. Black Ball Ferry Line, which operates the Coho, and Clipper Navigation say they will be ready to sail when the border restrictions are eased, and the U.S. Department of Transportation said Monday there is still a possibility it could offer a fall service to Sidney from the San Juan Islands. “There is a slight hope we could sail to Sidney in the fall, but that would depend on how soon the border could open,” said Ian Sterling, a spokesman for Washington State Ferries.