kW). All Datsun 15 models have bumpers. Both the Type 15 and 15T were produced in Yokohama on May 1936, with the 15T having a different engine cover that has near vertical vents instead of the cars horizontal vents. The Datsun Type 16 is the successor of the Type 15. It could only be differentiated externally by detailing on the bonnet and changes in the bonnet mascot and its logo. The last Datsun small car is the Datsun Type 17 which is distinguished by a wide vertical bar in middle of the front grille. Production began in April 1938 and according to Nissan, continued until January 1944, although David Bent claims that it finished in late 1938 as part of the cessation civilian car production that followed the Japanese decision to focus on military vehicles. The Datsun Type 17T resumed production after the Second Sino-Japanese War in 1949 until the 1955 introduction of the all new Datsun 120-series truck. Datsun DA/DB/DC/DS/DW series Nissan resumed automobile production starting in November 1947 with the Datsun DA series. The DA was a very modest and simple car based on the Type 17, with bodywork made partially of wood as a result of materials shortages. The better equipped and more modern looking DB "Deluxe" series was added in March 1948. Nissan also offered commercial vehicles, and the DA was sold as the Datsun 1121 truck, which was essentially the DA with a shortened cab for the front seat and an exposed cargo area attached to the chassis. An open-top roadster/convertible called the Datsun DC-3 appeared 12 January 1952, largely created by Yuichi Ohta. Yuichi was the son of Hiro Ohta, who founded the Ohta Jidosha car company, which produced cars in Japan between 1934 and 1957, until it became part of Tokyu Kogyo Kurogane shortly thereafter. The Datsun DS appeared in 1950, replacing the DA series as Datsun's Standard Sedan. All of these models were built on the identical pre-war chassis, itself a copy of or at least heavily inspired by the Austin 7. The chassis is short and with a narrow tread, as do most inter-war British cars, leading to somewhat ungainly designs with large overhangs on all sides as Datsun attempted to incorporate the post-war automobile design language. The one major change took place in August 1951, when the wheelbase was increased from to accommodate a four-door body (or more cargo space