CREATE TABLE table_17027 ("Ships name" CLOB, "Date entered service" CLOB, "Date withdrawn" CLOB, "Tonnage" FLOAT, "Type of Ship" CLOB)

what are all the date withdrawn for service entered on 21 november 1945
SELECT "Date withdrawn" FROM table_17027 WHERE "Date entered service" = '21 November 1945'
SELECT "Date withdrawn" FROM "table_17027" WHERE "Date entered service" = '21 November 1945'