They will first screen you physically, especially your height. You will undergo a mathematical exam. afterwards, you will take an English test. once you pass this, you'll be asked to take a SOLAS training to obtain a seaman's book. Then you'll under go for a medical exam.
I applied in-person. The process took 1 week. I interviewed at Starcruises (Kuala Lumpur) in Dec 2015
Interview
overall is a good experience. no test but two stages of the interview. First stage, interview by the manager. The second stage interview by the worker of the Human Resource department. The manager care about your excel skills and your logical thinking. The HR worker as some basic information.