The Grain Griffin was a British carrier based reconnaissance aircraft developed and built by the RNAS Marine Experimental Depot Port Victoria during the First World War. A development of the unsuccessful Sopwith B.1 bomber the Grain Griffin was a two-seat single-engined biplane that was built in small numbers for Britain's Royal Naval Air Service being used operationally during the British intervention in the Russian Civil War.
Made by Port Victoria Marine Experimental Aircraft Depot.
It is the successor of the Sopwith B.1 .