CREATE TABLE table_203_313 (id DECIMAL, "name" TEXT, "pennant" TEXT, "builder" TEXT, "launched" TEXT, "original name" TEXT, "fate" TEXT)

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'