CREATE TABLE table_4453 ("Shipyard" CLOB, "Laid down" CLOB, "Launched" CLOB, "Commissioned" CLOB, "Fleet" CLOB, "Status" CLOB)

Which fleet launched on July 30, 1961?
SELECT "Fleet" FROM table_4453 WHERE "Launched" = 'july 30, 1961'
SELECT "Fleet" FROM "table_4453" WHERE "Launched" = 'july 30, 1961'