First and foremost, a seaman is one of the inferior ranks that a person can have in the Navy or Coast Guard. Furthermore, some people have regarded a seaman as anyone who works on a ship. In some cases, a seaman might be fully equipped and trained to work on a wide range of aspects on the ship. Equally important, two common ranks of seaman include: ordinary and able. An ordinary seaman is required to work on a ship for a specified number of days. After he works on the ship for a specified number of days, he will likely have the opportunity to take and pass a variety of courses before he can get an offer to become an able seaman. The fact of the matter is that working your way up as a seaman is going to require lots of time, effort, and discipline. When it comes to working as a seaman, hard work is everything.