noun (n)

• the guidance of ships or airplanes from place to place(noun.act)

  Synonym:
  pilotage, piloting
  

  source: wordnet30
• ship traffic(noun.act)

  Example:
  The channel will be open to navigation as soon as the ice melts.
  

  source: wordnet30
• the work of a sailor(noun.act)

  Synonym:
  sailing, seafaring
  

  source: wordnet30
• The act of navigating; the act of passing on water in ships or other vessels; the state of being navigable.(noun)

  source: webster1913