Overseas owners have been warned of "significant" operating risks in Saudi Arabia if a new maritime law is not adhered to.
The kingdom has introduced its first bespoke commercial shipping regulations as part of its shipping and logistics drive through to 2030.
But one of the provisions of this new law is that non-Saudi offshore support vessels are not allowed to undertake towage, pilotage, supply services and coastal transport activities within its waters without an exemption licence from the president of the Public Transport Authority (PTA), global law firm Clyde & Co said.