With the greatest respect in the world, and I hope you do not take offence, but this question has been asked over and over in this forum. I know for you it’s the first time you have asked but people with inside knowledge are getting a little worn out responding to the same type of post over and over when the answer is still fundamentally the same.
I’ll have a quick go at offering some advice though. In times of industry need you have the kind of background and training that would be of interest to ROV operators and therefore would most likely succeed in gaining entry into the ROV game.
However, now is most definitely not the time of need so, if you have a regular job, stick with it for the time being.
Currently there is glut of personnel, especially ROV trainees touting so called ‘PTII tickets’ which in my opinion are not worth the paper they are printed on, as no doubt many have discovered when offering them to prospective employers.
Do not spend a penny on ROV courses at this moment in time.
For the future, keep tabs on the industry and if you see the price of oil climbing one year look to enter the industry about 12 months after that when the contract will start to be awarded as a result of the previous years higher earnings for the oil/gas field operators.
best regards
James Mc