CREATE TABLE table_4185 ("#" TEXT, "Project" TEXT, "Shipyard" TEXT, "Laid down" TEXT, "Launched" TEXT, "Commissioned" TEXT, "Status" TEXT)

what project was initially started before september 20, 1968
SELECT "Commissioned" FROM table_4185 WHERE "Launched" = 'September 20, 1968'
SELECT "Commissioned" FROM "table_4185" WHERE "Launched" = 'September 20, 1968'