Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praenāvĭgātĭo, ōnis, f. [praenavigo], a sailing by or past (post-Aug.): praenavigatio Atlantis, Plin. 6, 31, 36, § 199; 4, 12, 19, § 57.