There are two paragraphs regarding offshore work in South African Tax law.
The first, 183 days spent out of the country of which 60 must be continious applies to South African taxpayers working anywhere in the world except for those in the next paragraph:
The second paragraph is aimed at the maritime industry and applies to those working on vessels at sea with a seamans book. These persons need only do 183 days out of the country. The 60 days continious do not apply.
Best find out your foreign tax liabilities from the countries you intend working in.