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

Crossword clues for Navigator's charts:

MAPS: Navigational charts
GRIDMAP: Navigational chart
TRAILMAPS: Navigation charts
REMAP: Make a new navigation chart
GRIDMAP: Navigational chart with an overlay of lines
SEAMAPS: Navigator's charts
SEAMAP: Navigator's chart