Anti-submarine, 1946-1962
In 1946, the "S for Scout" designation was replaced by "S for anti-Submarine", however, the numbers in the 'S' series were not restarted.
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- SF - used in the Scout sequence
- S2F Tracker - Grumman
- SU - used in the Scout sequence
- XS2U - Vought
Read more about this topic: List Of Military Aircraft Of The United States (naval)