CREATE TABLE table_61230 ("Ship" TEXT, "Hull Number" TEXT, "Laid down" TEXT, "Launched" TEXT, "Commissioned" TEXT)

What is Commissioned, when Laid Down is '6 September 2003'?
SELECT "Commissioned" FROM table_61230 WHERE "Laid down" = '6 september 2003'
SELECT "Commissioned" FROM "table_61230" WHERE "Laid down" = '6 september 2003'