Complex sentence: On November 24, the "S.S. Rajula" sailed under a well-defined trough over the southwest Bay of Bengal and reported 55 km/h (35 mph) winds.
Split into simpler sentences: On November 24, a trough over the southwest Bay of Bengal became well-defined. That day, the "S.S. Rajula" sailed through the storm and reported 55 km/h (35 mph) winds.