In 1928 Norddeutscher Lloyd launched two next-generation ocean liners the SS Bremen and the SS Europa each equipped with a seaplane catapult specially designed by German aircraft manufacturer Heinkel. Each vessel had a specially designed seaplane the Heinkel He-12, which had a more practical use, cutting transit time for international mail. The first launch and flight of these planes were on 22 July 1929 launched from the Bremen 250 miles away from New York City. This set a record for international mail with mail from Berlin to New York being delivered in just six and a half days. On the return trip on 1 August, the small plane arrived in Bremerhaven transferring mail to another plane to Berlin. This time the turnaround of mail from New York to Germany was just five and a half days. Norddeutscher Lloyd had to have additional onboard support crew for these planes in addition to the conventional ship crew.