French word sauvetage comes from French -age, French sauver

Detailed word origin of sauvetage

Dictionary entry	Language	Definition
-age	French (fra)	(rare) Forming collective nouns.. Forming nouns with the sense of "action or result of Xing" or, more rarely, "action related to X".. Forming nouns with the sense of "state of being (a) X".
sauver	French (fra)	(computing) to save. (pronominal) to escape, run away. To save, rescue; to protect.
sauvetage	French (fra)	(sports) save. Rescue (act of rescuing someone or something). Salvage. Saving (act of saving).

Words with the same origin as sauvetage