S73

S73 may refer to:

Aircraft

Bernard S-73, a French racing monoplane
Savoia-Marchetti S.73, an Italian airliner
Sikorsky S-73, an American helicopter proposal

Submarines

HMCS Onondaga (S73), of the Royal Canadian Navy
INS Arihant (S73), of the Indian Navy
INS Rachav (S73), of the Israeli Navy

Other uses

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