INTERNAL COMBUSTION ENGINE WITH DENITRIFICATION UNIT, AND OCEAN VESSEL PROVIDED WITH SAME

In an internal combustion engine (1) provided with a blower (3) that blows air; a combustion chamber (4) that generates a driving force by combusting the air blown by the blower (3) and fuel and that also exhausts exhaust gas; a supercharger (2) that is driven by the exhaust gas exhausted from the combustion chamber (4); a denitrification device (10) having a catalyst that performs reduction of nitrogen oxides in the exhaust gas exhausted from the supercharger (2); and a burner unit (8) that is provided between the combustion chamber (4) and the supercharger (2) and from which fuel is sprayed into the exhaust gas to be guided to the supercharger (2) to cause combustion, the air blown by the blower (3) is led out from the combustion chamber (4) as combustion air before starting up the internal combustion engine (1).