South African authorities are deploying mitigation measures to prevent a stricken Ultrabulk vessel from causing an environmental disaster on its coastline.

The move comes as authorities suspect liquefaction of cargo caused the 13,800-dwt Ultra Galaxy (built 2008) to list.

The multipurpose ship was en route from Spain to Mozambique carrying ammonium nitrate fertiliser when it developed a severe list leading to the crew abandoning the vessel off the Western coastline of South Africa.