Mazout translates to "fuel oil" or "heavy fuel oil". It's a specific and somewhat technical term for a type of petroleum product, making it less common in everyday conversation or typical song lyrics.
In the context of "Torrey Canyon," a song about an oil tanker, this word is crucial. It directly refers to the cargo the ship is carrying, highlighting the industrial and environmental themes of the song. Its presence grounds the narrative in the reality of maritime transport and potential ecological disaster.
Serge Gainsbourg wrote ‘Torrey Canyon’ as a monologue spoken by the ship itself, months after the real Torrey Canyon ran aground off Cornwall in 1967 and spilled its entire cargo, the worst oil spill Britain had seen. The tanker introduces itself by paperwork rather than by name: “Cent vingt mille tonnes de pétrole brut!” (“One hundred and twenty thousand tons of crude oil!”), built in Japan, owned through an American shell company, chartered to Union Oil, flagged in Liberia to dodge regulation, and crewed by Italians who had nothing to do with any of it. Every verse adds another layer of ownership and none of it lands anywhere: “Le mazout dont on m’a rempli les soutes / C’est celui du consortium British Petroleum” (“The fuel oil with which they filled my bunkers / It is that of the British Petroleum consortium”). By the end the ship just repeats its own name, “Le Torrey Canyon, le Torrey Canyon,” the way a brand repeats itself instead of answering for what it did.