Operation Sail refers to a series of sailing events held to celebrate special occasions and features sailing vessels from around the world. Each event is coordinated by Operation Sail, Inc., a non-profit organization established in 1961 by U.S. President John F. Kennedy and must be approved by the United States Congress. Often referred to as OpSail or Op Sail, the event has the goals of promoting good will and cooperation between countries while providing sail training and celebrating maritime history. It is also sometimes erroneously referred to as "Tall Ships". While the tall ships form the centerpiece of the event, smaller sailing vessels also participate.