naval chart vs navigational chart

naval chart and navigational chart both are nouns.

Word	Noun	Adjective	Verb	Adverb
naval chart	Yes	No	No	No
navigational chart	Yes	No	No	No

As nouns, naval chart and navigational chart are synonyms defined as:

naval chart and navigational chart: a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions

Other synonyms of naval chart include pilot chart.

naval chart (noun)	navigational chart (noun)
a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions	a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions