The adjustable cowling gills permitted better control of cooling airflow over the engine.

The SBU-1 completed flight tests in 1934 and went into production under a contract awarded in January 1935.

The Corsair was the first aircraft of its type, a scout bomber, to fly faster than 200 mph.

The last SBU Corsairs were retired from active service in 1941, being reassigned as trainers.

Data from United States Navy Aircraft since 1911 [4]General characteristics Performance Armament Media related to Vought SBU Corsair at Wikimedia Commons