[Casacostadamorte]

Pues lo dice claramente la explicación del video...
Fué una avería e intentaron pararlo con el ancla, (en el video se ve humear el orificio de salida del ancla, supongo que por el esfuerzo sobre el cabrestante)...

A German-flagged container ship headed straight towards shore and briefly ran aground in Hong Kong on Sunday afternoon (April 6, 2014). The 192.5-meter-long Hansa Constitution was travelling along the busy East Lamma shipping channel when it veered off course and headed straight towards shore. The Hong Kong Marine Department said the ship's main engine broke down. The crew dropped anchor, making loud screeching noises, to try and slow it down as it headed straight towards the sea wall of the University of Hong Kong sports grounds in Pok Fu Lam. The ship ground to a halt at around 15.22 local. It then slowly reversed, as Marine, police and fire services headed towards the site.
It was eventually towed free. No one was injured.
The ship was sailing from Yokohama to Chiwan port in Shenzhen, China.