NAVIGATIONAL SYSTEMnavigational system · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:NAVIGATIONAL SYSTEMTier 1Ordinal226Pythagorean73Classical212Reverse260Reverse Reduction107Standard1135Final Large1695Ordinal172Reduced55Atbash546Isopsephy1673Ordinal206Abjad1213