On 3/21/2009 , the vessel MAERSK CHALLENGER (Official Number 824374) was involved in a total failure of any machinery or technical system in OFF LIBERIA, AFRICA,.

The vessel, with 11 persons on board, experienced the incident while engaged in regular operations. Fortunately, the ship was able to continue its voyage. No injuries or fatalities were reported, and there was pollution.

This incident was officially recorded by Transport Canada on 4/20/2009 . Weather at the time was reported as clear.

On 21 March 2009, the AHTS "MAERSK CHALLENGER" with 11 POB reported a crankcase explosion in it's number one main engine. No reports of damage.