The term 'Low Naval Rank' can be summarized as the job of a SEAMAN, which is a 6-letter word. A SEAMAN is an enlisted rank in the United States Navy and Coast Guard, just above the rank of Fireman and below the rank of Petty Officer Third Class. Seamen are responsible for a variety of tasks, including navigation, ship maintenance, and watch-standing. They are also expected to perform basic military duties, such as saluting officers and standing guard duty.