Good Day All

I have a question on taxes that could be implicated on money inherited offshore.

At present the money is sitting with a firm in Jersey. The funds are not from South African origin.

Questions are:
1. Can I draw the interest or part of the investment to use as an income without having to declare or pay SARS any tax ? Not to reinvest but use.
2. If I die would SARS claim CGT or estate? I want my will to show children overseas as beneficiary?
3. Can SARS tax me for anything?

I have looked on the net and articles are a bit vague, because the origin is not from here.

I hope I am making sense and appreciate any comments etc