What is the employment situation of seafarers now? Does it have anything to do with the graduation school?

Have something to do with it. After all, you didn't take the exam directly, and people were very sad about the college entrance examination. There is basically no difference when you are employed, except that you must have a college degree or above for promotion in the future. I don't care where you graduated as long as you have a certificate when you are employed.

Besides, this school should be a two-year system, which is your advantage, because the formal academic system is three or four years "junior college or undergraduate". When they graduate, you should be a formal three-year management.

The second question:

According to the current market, it should be ok, but it is certainly not as good as the market before the economic crisis. After all, recovery from shock takes time.

As long as a graduate like you gets a certificate, everything will be fine and the job should not be a problem. Certificates are the most important! Never!