If you are taking the ASTB on the computer, then I am not sure if the gouge on the site is the same or not. If you get the chance, I would take it on paper, I find that it is a lot easier to have the paper in hand, that way you realize how much more you have, which ones you had questions on, etc. As far as the written version, the gouge and the test are very similar. Study the marine guide and the other downloads from here and you will do fine.