Is it possible for a Chief Officer to become Safety Superintendent?
I do not see a reason why a chief officer cannot become a safety superintendent. But what I like about this question is you being absolutely specific.
You did not ask about if a chief officer can get a shore job in a shipping company. Instead you are being specific here about the possibility of a chef officer being a safety superintendent.
If you (or person in picture here) have interest in a role as specific as safety superintendent, you have crossed the first hurdle which is setting a clear goal.
The second hurdle in this is with the comparatively lesser experience that you may have for this role. But if your learning graph in last few years has been going up, I am sure you can convince anyone of your suitability for this role.
All the best.