 After the signing of the Armistice of Mudros on 30 October ended the war for the Ottoman Empire , the four remaining U @-@ boats of the Constantinople Flotilla — UB @-@ 14 , UB @-@ 42 , UC @-@ 23 , and UC @-@ 37 — fled to Sevastopol . There they were surrendered on 26 November . UB @-@ 42 was broken up at Malta in 1920 . 
