What are main duties for Fourth Engineer?请帮忙给出正确答案

正确答案：The Fourth Engineer is responsible for watching at periods of 0800-1200 hours and 2000-2400 hours; He is responsible for assisting the Second Engineer in all technical aspects; He is responsible for operation and maintenance of other auxiliary machinery except those taken up by the Third Engineer; He is responsible for taking positive measures in the safe and efficient operation of all machinery, and guarding against fire and oil pollution; He is responsible for safety procedures and maintenance of all safety equipment, and engine control system in a thoroughly efficient state; He is responsible for assisting in bunkering and fuel transfer operation under the direction of the Second Engineer; He is responsible for carrying out instructions relating to ballasting and deballasting, and recording the operation; He is responsible for testing the telegraph before departure and recording all engine movement in the Bell Book for staying in the engine room when vessel is entering or leaving a port or when the engine is on stand-by or in maneuvering; He is responsible for assisting the Second Engineer in testing of emergency fire pump and lifeboat engine.