Sikorsky (USA) S-36. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-38. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-39. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-39B. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-39 (the aircraft) .

Sikorsky (USA) S-40. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-40 American Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .

Sikorsky (USA) S-40 Caribbean Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .

Sikorsky (USA) S-40 Southern Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .

Sikorsky (USA) S-41. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-42. It is related to Sikorsky (USA) (the company) .

Sikorsky (USA) S-42 Brazilian Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-42 (the aircraft) .

Sikorsky (USA) S-42 Hong Kong Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-42 (the aircraft) .