If you want to work in the oil and gas industry you require an offshore survival certificate which is also known as the RGIT or the BOSIET.
There are many variations depending on where you are based but BOSIET training with CA-EBS is the minimum requirement for offshore workers in the UK sector of the North Sea. If you’re platform based you might also require a MIST (Minimum Industry Safety Training) certificate and some employers request this regardless.
Other countries outside the UK might have different requirements. For example in Norway, your UK certificates are accepted but Norwegian Escape Chute Training is also required.