CREATE TABLE table_203_313 (id NUMBER, "name" CLOB, "pennant" CLOB, "builder" CLOB, "launched" CLOB, "original name" CLOB, "fate" CLOB)

which other ship was launched in the same year as the wave victor ?
SELECT "name" FROM table_203_313 WHERE "name" <> 'wave victor' AND "launched" = (SELECT "launched" FROM table_203_313 WHERE "name" = 'wave victor')
SELECT "name" FROM "table_203_313" WHERE "launched" = (SELECT "launched" FROM "table_203_313" WHERE "name" = 'wave victor') AND "name" <> 'wave victor'