Of or relating to navigation; that allows of navigation. Also (in early use): †nautical (obsolete).
navigatory/ˈnavɪɡeɪt(ə)ri/ /ˈnavɪɡət(ə)ri/ /navɪˈɡeɪt(ə)ri/
Mid 17th century; earliest use found in Walter Charleton (1620–1707), physician and natural philosopher. From navigate + -ory. Compare post-classical Latin navigatorius, adjective, and earlier navigatoria art of navigation.