Grindrod South Africa is sending one of its vessels to carry aid for Mozambique following the devastating cyclone Idai.
The 1,156-teu Border (built 1993) is currently serving the group's Southern African sea-freight business Ocean Africa Container Lines.
It will now travel from Maputo to Beira on Thursday.
A "much-needed relief cargo" is being assembled by local authorities and humanitarian aid organisations, it said.
