Can seafarers apply for skilled migration?

Of course. Seafarer migration has a long history, and many countries also need skilled seafarers to supplement the scarcity of this position, so they can apply for immigration. For example, this is the case in Canada and Australia, but there are also many preconditions. Immigration of Filipino sailors to Canada has become a large-scale trend. As long as they can go to Canada and Australia to get green cards, there is no big problem.