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

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'