SS Ajax was a cargo steamship that was built in Germany in 1923 as Elbe. In 1927 she was renamed twice, first to Ceuta and then to Ajax. A series of German shipping companies owned the ship until 1927, when a Dutch company bought her. A Luftwaffe air raid sank her in the English Channel in 1940. Her wreck off the Isle of Wight is now a destination for wreck diving.