SS Arvonian was a 2,794 GRT British freighter built in 1905, with a long and complex history under several names. She served in the British merchant marine, and was commissioned in the United States and British navies during World War I, before returning to merchant service, and eventually being sold to Latvia. In World War II she was taken over by the Soviet Union, then captured by Germany. Post-war she sailed under the Latvian and Costa Rican flags, until finally scrapped in West Germany in 1958.