Twenty of its kind were on order from June 1926 and, in October, the product had its designation revised to "FU-1". Deliveries were all fulfilled by April of the following year and, for June 1928, the line was serving aboard U.S. naval capital ships as part of squadron VF-2B. However, their time in service was short-lived for the product was quickly superseded by the more modern Boeing F3B-1 carrier-based fighter-bomber biplanes introduced in August of 1928 - this coincided with VF-2B's shift from capital battleship service to aircraft carriers.
Vought FU-1s ended their days as two-seat trainers following conversion which reintroduced the second cockpit of the OU-1. In this guise they were designated "FU-2".
The Peruvian Air Force and Navy services both operated several FU series aircraft for a time, becoming the only foreign operator of the type. The line was altogether retired in 1929.
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