| Sikorsky Aircraft|| Igor Sikorsky|
Designation for three Sikorsky S-41 flying boats for evaluation.
Designation for two Sikorsky PS-2 flying boats converted as transports.
Four Sikorsky PS-3 flying boats converted as transports.
Designation for two impressed Sikorsky S-38A flying boats.
Designation for two impressed Sikorsky S-41 flying boats.
Sikorsky RS Wikipedia
The Sikorsky RS was a designation used by the United States Navy for a number of different Sikorsky twin-engined amphibious flying boats.
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