Navigational

[nav-i-gey-shuh n] /ˌnæv ɪˈgeɪ ʃən/

noun
1.
the act or process of .
2.
the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile.
/ˌnævɪˈɡeɪʃən/
noun
1.
the skill or process of plotting a route and directing a ship, aircraft, etc, along it
2.
the act or practice of navigating: dredging made navigation of the river possible
3.
(US, rare) ship traffic; shipping
4.
(Midland English, dialect) an inland waterway; canal
adj.

1884, from navigation + -al.
n.

1530s, from Middle French navigation (14c.) or directly from Latin navigationem (nominative navigatio) “a sailing, navigation, voyage,” noun of action from past participle stem of navigare “to sail, sail over, go by sea, steer a ship,” from navis “ship” (see naval) + root of agere “to drive” (see act (n.)).