CREATE TABLE table_4186 ("#" TEXT, "Project" TEXT, "Shipyard" TEXT, "Laid down" TEXT, "Launched" TEXT, "Commissioned" TEXT, "Status" TEXT)

when was the first start date that actually began on august 6, 1969
SELECT "Launched" FROM table_4186 WHERE "Commissioned" = 'August 6, 1969'
SELECT "Launched" FROM "table_4186" WHERE "Commissioned" = 'August 6, 1969'