seaman

noun4

1. •
   (UK, Navy) A person of the lowest rank in the Navy, below able seaman.
2. •
   (US, Navy) An enlisted rate in the United States Navy and United States Coast Guard, ranking below petty officer third class and above seaman apprentice.
3. •
   Synonym of sailor, particularly on a maritime vessel.
4. •
   A merman; the male of the mermaid.

   • , Book III not to mention what is confidently reported of mermaids, or sea-men