Sao Tome and Principeexports of Marine propulsion engines, diesel was $0.64K . Sao Tome and Principeexported Marine propulsion engines, diesel to Portugal ($0.64K )Sao Tome and Principeexports of Marine propulsion engines, diesel was $0.64K . Sao Tome and Principeexported Marine propulsion engines, diesel to Portugal ($0.64K ).Marine propulsion engines, diesel imports by country in 2022