user: Question: When were the ships launched that were laid down on September 1, 1964?
Columns: ['#', 'Shipyard', 'Laid down', 'Launched', 'Commissioned', 'Fleet', 'Status']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['K-166', 'SEVMASH, Severodvinsk', 'May 30, 1961', 'September 6, 1962', 'October 31, 1963', 'Northern', 'Decommissioned 1989 for scrapping']
SQL:

assistant: SELECT "Launched" FROM "Table" WHERE "Laid down" = 'September 1, 1964';