What was the 1976 Bicentennial tall-ship celebration in New York Harbor called?

The 1976 Bicentennial tall-ship celebration in New York Harbor was called Operation Sail.

Operation Sail is a series of international sailing events featuring tall ships and other vessels. The 1976 edition formed part of the United States Bicentennial and brought 16 tall ships to New York for a Grand Parade of Sailing Ships.

The event also included 113 supporting vessels listed in its official program. The ships represented countries including the United States, Italy, Germany, Spain, Japan, Argentina, and the Soviet Union. Their presence turned the harbor into a large maritime pageant celebrating history and international goodwill.

Operation Sail is sometimes called Op Sail or OpSail. It is not simply another name for all tall-ship gatherings: the event has a specific organizing body and is paired with an International Naval Review. The 1976 event was the second major Operation Sail, following the inaugural 1964 celebration.