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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Navigator's references:

CHART: Navigational reference
MAPS: Navigation references
LODESTARS: Navigational reference points
MAP: Navigator's reference
SEAMAP: Navigator's reference
CHARTS: Navigator's references
MAPS: Navigator's references
CHART: Navigator's reference
STAR: Reference point for nighttime navigation