NOAA General vessel assistant question

Hi new here but not new to ship life. Kind of rusty due to it’s been some time so wanted to ask some questions.

Ok im in the process of being hired with NOAA as general vessel assistant for the steward department.
I have previously sailed Msc. as supply utility. Loved it by the way!
I am wondering how similar the positions are?
I know the basics of what to bring on ship very little lol! Learned that by watching my father go to sea all my life.
Just want to get an idea of how similar the 2 steward departments are and what differences there are?
Any help appreciated!