Instead, the Russians purposely designed Admiral Kuznetsov to utilize a dirty, cheap fuel source known as mazut. Mazut has a high sulfur content that is known for billowing black smoke emissions.

What You Need to Know: Russia’s only aircraft carrier, Admiral Kuznetsov, has faced persistent ... tar-like substance creates a black-smoke byproduct when burned that clings to sailors clothing ...

From its inception, the Soviet-era aircraft carrier Admiral Kuznetsov was fraught with design ... filthy tar-like fuel that belches thick black smoke into the skies above where the aircraft ...