4th Engineer (Четвертый механик) / Motorman (Моторист) / Oiler (Вахтенный моторист) / Second Engineer (Второй механик) / Second engineer officer on ships powered by main propulsion machinery of between 750 kW and 3,000 kW propulsion power (Второй механик морского судна с ГДУ от 750 до 3000 кВт) / Third Engineer (Третий механик)