Yes, it is now. Since Jan 2011 if I’m not mistaken the 200 ton rules and nav plotting sections are the.same as 500/1600. However of you tested at a school and not an rec chances are you took the old 100 ton exams with a stability section. For some reason schools are grandfathered in with an EASIER exam! However when they are up for review next they will have to update the curriculum.