Last summer, DCist enjoyed a sailing lesson from DC Sail, the city’s nonprofit community sailing center operated by the National Maritime Heritage Foundation (NMHF). We joined three of the friendly folks from DC Sail on a five person, 19-foot Flying Scott, and cruised through the Washington Channel past Hains Point. This past Friday, we joined them again for one of their bi-weekly Friday night cruises on their larger, 65-foot schooner, American Spirit. The schooner can…