A more thorough explanation:

Definition: A navarch (also known as navarchus) is a historical term that refers to a master of an armed ship. The word comes from the Greek words "naus" meaning "ship" and "archos" meaning "chief".

Example: In ancient Greece, navarchs were responsible for commanding and navigating warships during battles at sea. They were highly skilled and respected leaders who played a crucial role in naval warfare.

Example: During the Roman Empire, navarchs were also appointed to oversee the construction and maintenance of ships, as well as to lead naval expeditions and protect trade routes.

These examples illustrate how the term "navarch" was used in history to describe a specific role and position of authority within naval operations.