In fact, "three white skins" is a result preview. After the internship ship is confirmed, you can change the unopened book (application form for crew training/internship) and the training record book on board with this performance notice at the Maritime Safety Administration.

If you attend the three-pipe training after one year as a mechanic, the three-pipe internship calendar can be shortened to half a year.

I hope I can help you, please adopt it if you are satisfied!