I can HIGHLY recommend Britannia as a shipping company in Capetown.
It's a British company..
They were by far the cheapest for our two motorcycles. £600 each and we didn't have to do anything apart from drop the bikes off with them.
They were very friendly and helpful. They just put out bikes in a container and we collected them at their depot in the U.K.
I'm sure they also ship to BSAS.
When you get to Argentina, I HIGHLY recommend that you talk to Javier and Sandra at Dakar Motos. Sandra is an expert at getting your vehicle out of port and through customs.
Their fee is very reasonable considering you are charged for storage in port and everyday you are battling with paperwork and confusion , you are getting charged a storage fee too.
International Removals | Britannia Bradshaw
They will be able to give you a contact for Capetown.
2001 NX650 Dominator.
BMW Dealer Technician
Ushuaia - Colombia 2007/8
UK- South Africa 2010/11
S.E Asia 2014
U.K - Magadan 2015