CREATE TABLE table_53896 ("Name" CLOB, "Original name" CLOB, "Commissioned" CLOB, "Final decommission" CLOB, "Fate" CLOB)

When was the ship that had a fate of 'converted to laker, 1961; still in service' commissioned?
SELECT "Commissioned" FROM table_53896 WHERE "Fate" = 'converted to laker, 1961; still in service'
SELECT "Commissioned" FROM "table_53896" WHERE "Fate" = 'converted to laker, 1961; still in service'