The 12,129 GRT steamship Osterley was built at the London & Glasgow Engineering and Iron Shipbuilding Company in Govan and was launched on January 26, 1909. The 163.07 meter long and 19.20 meter wide passenger and mail ship had two funnels, two masts and two propellers and was powered by quadruple expansion steam engines that allowed a speed of 18 knots. The passenger accommodations were designed for 280 first class passengers, 130 second class passengers and 900 third class passengers.
The Osterley had five identical sister ships , all of which were put into service between 1909 and 1911: the Otway (12,077 GRT), the Otranto (I) (12,077 GRT), the Orvieto (12,133 GRT), the Orsova (I) (12,136 GRT ) and the Orama (I) (12,927 GRT).
On August 6, 1909, the Osterley ran in London on her maiden voyage to Melbourne , Sydney and Brisbane via Suez . This remained her fixed route until the First World War , for which she needed 45 days. In June 1917 the ship was called up for service as a troop transport and survived the First World War as such. In January 1919, the Osterley returned to civilian passenger traffic and passed the next few years without incident. On April 14, 1930 she arrived in Bo'ness (Scotland) for demolition .